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 »  Abstract
 » Introduction
 » Incidence
 » Causes
 »  Mechanism and Pa...
 » Spontaneous Recovery
 » Initial Treatment
 » Imaging
 »  Indications for ...
 » Surgical Treatment
 »  Distal Nerve Tra...
 » Authors' Choice
 » Secondary Surgery
 » Discussion
 » Conclusions
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 Table of Contents    
Year : 2011  |  Volume : 44  |  Issue : 3  |  Page : 380-389

Obstetric brachial plexus injury

1 Department of Plastic Surgery, Bombay Hospital Institute of Medical Sciences, New Marine Lines, Mumbai, India
2 Department of Paediatric Orthopaedics Nanavati Hospital, Jaslok Hospital and Wadia Children's Hospital, Mumbai, India

Date of Web Publication15-Dec-2011

Correspondence Address:
Mukund R Thatte
Department of Plastic Surgery, Bombay Hospital Institute of Medical Sciences, New Marine Lines, Mumbai - 400 020
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-0358.90805

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 » Abstract 

Obstetric brachial plexus injury (OBPI), also known as birth brachial plexus injury (BBPI), is unfortunately a rather common injury in newborn children. Incidence varies between 0.15 and 3 per 1000 live births in various series and countries. Although spontaneous recovery is known, there is a large subset which does not recover and needs primary or secondary surgical intervention. An extensive review of peer-reviewed publications has been done in this study, including clinical papers, review articles and systematic review of the subject. In addition, the authors' experience of several hundred cases over the last 15 years has been added and has influenced the ultimate text. Causes of OBPI, indications of primary nerve surgery and secondary reconstruction of shoulder, etc. are discussed in detail. Although all affected children do not require surgery in infancy, a substantial proportion of them, however, require it and are better off for it. Secondary surgery is needed for shoulder elbow and hand problems. Results of nerve surgery are very encouraging. Children with OBPI should be seen early by a hand surgeon dealing with brachial plexus injuries. Good results are possible with early and appropriate intervention even in severe cases.

Keywords: Birth brachial plexus injury; obstetric palsy; primary surgery

How to cite this article:
Thatte MR, Mehta R. Obstetric brachial plexus injury. Indian J Plast Surg 2011;44:380-9

How to cite this URL:
Thatte MR, Mehta R. Obstetric brachial plexus injury. Indian J Plast Surg [serial online] 2011 [cited 2018 Jun 21];44:380-9. Available from:

 » Introduction Top

Obstetric brachial plexus injury (OBPI), also known as birth brachial plexus injury (BBPI), is unfortunately a rather common injury in newborn children. Incidence varies between 0.15 and 3 per 1000 live births in various series and countries. [1] Although spontaneous recovery is known, there is a large subset which does not recover and needs primary or secondary surgical intervention. The first known documentation was by Smellie in 1764, [2] and Duchenne in 1872 [3] surmised that traction was the cause of the palsy. Erb described a similar palsy in adults in 1874 [4] and suggested that traction or compression of the C5 and C6 roots could produce the injury.

This article reviews peer-reviewed publications including clinical papers, review articles and systematic review of the subject. In addition, the authors' experience of several hundred cases over the last 15 years has been added and has influenced the ultimate text. Causes of OBPI, indications of primary nerve surgery and secondary reconstruction of shoulder, etc. are discussed in detail.

 » Incidence Top

There is a wide variation in reported figures of incidence ranging from 0.15 to 3 per 1000 live births. These figures reflect health care availability, reporting methods, referral bias and population differences. In general, a figure of 1:1000 live births is generally agreed upon as an average of various series. Spontaneous recovery is reported in all series, but varies from as high as 90% to as low as 30%. [1],[5],[6],[7],[8],[9],[10],[11],[12],[13] Once again, referral bias and surveys based on tertiary centres are the cause of this disparity. It is, however, now agreed that recovery is less than what was originally thought and that more children need monitoring and early intervention to improve their outcome.

 » Causes Top


  • Macrosomia
  • Breech


  • Diabetes in pregnancy
  • Shoulder dystocia
  • Small stature/cephalopelvic disproportion
  • Primi or multiparity
  • Prolonged second stage of labour

 » Mechanism and Pathophysiology Top

The generally accepted mechanism in cases of shoulder dystocia is traction to the neck caused by pull of the obstetrician's hand or instruments like forceps or vacuum. In this scenario, the neck on the side of the anterior shoulder is stretched and this stretch causes a "strain" on the brachial plexus on that side, causing a varying degree of injury. This mechanism would typically cause anterior shoulder involvement, which would imply a higher incidence of right-sided injuries because left occipito anterior (LAO) is the most common presentation. However, posterior shoulder involvement is seen frequently [14] and the right side is not the more common side in literature. Our own data, which have been documented, show that in a cohort of 305 patients, 60% were right sided, 37 % were left sided and 3% were bilateral. If we had gone by LAO statistics we should have had 90% right side involvement.

Therefore, other mechanisms have been looked at. For example, some papers have discussed whether it is really an intrauterine injury. Jennet et al.[14] have shown that almost half the cases they reviewed did not have shoulder dystocia and concluded that it could be caused by intrauterine maladaptation and not birth trauma. Others like Gherman [15] have described that OBPI has occurred following caesarean sections and also that shoulder dystocia does not always lead to OBPI. There is some electrophysiological evidence [16] to show that OBPI could have occurred in the intrauterine period since denervation potentials are seen on day 1 after delivery which ought not be possible in case it occurred at the moment of delivery. It has been shown that the Posterior shoulder can get stuck on the Sacral promontory and cause injury through a stretch on that side [14] while the baby is in early stage of labour before any question about shoulder dystocia and traction. Bicornuate uterus has also given rise to OBPI with phrenic palsy. [17]

In contrast, Gilbert et al.[18] found that the majority (92%) of the high-risk patients (diabetic women delivered by operative vaginal delivery with infants of 4.5 kg birth weight) did not have OBPP and caesarean delivery would have been unnecessary. Although macrosomia is commonly associated with OBPP, Rouse et al.[19] found no benefit with elective caesarean delivery in women with estimated foetal weights of 4.5 kg, unless they were also diabetic. Lindsay et al.[20] found that a policy of elective caesarean section for macrosomia would necessitate 148-258 caesarean sections to prevent a single persistent injury and avoidance of operative vaginal delivery would require 50-99 caesarean sections per injury prevented.

Thus, there is no agreement among scholars about the mechanism or active prevention and this has medico-legal implications. Lawyers for aggrieved parents routinely blame the obstetrician for the injury, but this may not be supported by evidence in the literature.


The injury caused to the roots of the plexus can be of a varied nature and can affect some or all roots. The classical injury is a C5, C6 palsy, but all roots can be involved. The level and nature of root involvement varies from a neuropraxia to varying levels of axonotomesis to neurotomesis. In the worst injuries, even a root avulsion is possible and one can find ganglia in the neck as shown in [Figure 1]. Clinical examination and electrophysiology with or without magnetic resonance imaging (MRI) can help in largely determing the type and extent of injury. Sunderland's [21] well-known classification is useful to understand the nature of the injury. Broadly speaking, for the surgeon, there are three different kinds of lesions:

  • Neuroma in continuity: This represents a postganglionic rupture, i.e. a Sunderland type 2, 3 or 4 injury which is healed with fibrosis and some axons may be attempting to go across the scar tissue. Occasionally, it is a conducting neuroma with useful function. However, if seen early enough, it is far better to resect and reconstruct [Figure 2].
  • Rupture: This is a postganglionic neurotomesis, i.e. Sunderland type 5 causing a separation of proximal and distal ends often bridged by scar tissue [Figure 3].
  • Avulsion: This is a preganglionic lesion showing avulsed ganglia in the neck or a pseudomeningocoele [Figure 1] and [Figure 4].
Figure 1: Avulsed ganglia noted on supraclavicular exploration in a child

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Figure 2: Example of neuroma in continuity

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Figure 3: Example of ruptured plexus

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Figure 4: Pseudomeningocoele in neck

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 » Spontaneous Recovery Top

In literature, spontaneous recovery in over 90% of cases is mentioned in several papers. [5],[6],[7],[8],[9],[10],[11],[12],[13],[22],[23] However, a systematic review by Pondaag et al.[1] showed that no study presented a prospective, population-based cohort that was scored with a proper scoring system with adequate follow-up. They concluded that no scientifically sound evidence exists to support the common perception of complete spontaneous recovery. In their opinion, the incidence of children requiring surgery was 20-30% rather than the 10% often mentioned in literature.

 » Initial Treatment Top

Initial treatment consists of coming to a proper diagnosis, which includes a careful history taking, detailed clinical examination, including a check for associated injuries like fractures of the clavicle and humerus. Electrophysiology is recommended at 4 weeks initially to confirm the diagnosis and get a baseline reading of the involvement of various nerves and muscles as well as sensory parameters. Counselling of parents is critical and clear open communication is strongly recommended. Gentle mobilisation of all joints of the affected limb is suggested to avoid stiffness. "Gift wrapping" the baby in the typical traditional Indian style after morning bath is discouraged as it deprives the child of a chance to use that limb spontaneously. Repeat examinations are carried out every 4-6 weeks until 3 months. At this time, a decision is made about the need for surgery, which in turn depends on clinical and electrophysiological findings.

 » Imaging Top

The following modalities are available:

  • Plain X-ray of arm and chest for fractures and phrenic palsy
  • Computed tomography (CT) myelography
  • MR scans

There are several papers discussing these modalities. [24],[25],[26],[27],[28],[29],[30],[31],[32] At one time, CT myelography was the gold standard to decide on root avulsion in adult palsy. Currently, MRI is considered very useful, at least in the adult palsy. Although there are reports of the use of MR scans, the authors do not routinely perform MR scans in infants. Clinical exam and electrophysiology can give adequate evidence of the status of the plexus and the indication for surgery.

 » Indications for Surgery Top

In case of global involvement, involvement of the hand or a flail upper limb, there is no real dispute about indication or timing of surgery. The dispute arises in the upper plexus lesions of Narakas Type I and II [Table 1]. The author follows Prof. Gilbert's criteria of using the biceps brachii as an indicator of recovery in upper plexus lesions. Following the landmark theses by Tassin, [33] it was generally agreed that a lack of antigravity biceps function at 3 months is an indication for surgery in C5C6+/−C7 lesions. The logic behind this caveat is that the biceps is the only C5-C6 innervated muscle whose function cannot be duplicated by other muscles, and therefore is a good uncluttered indicator of C5C6 recovery. The shoulder, for example, is moved by multiple muscles, which have various innervations and represent many neurotomes, and is therefore considered unsuitable for making this judgement call. Biceps recovery indicates the good health of C5-C6 and the upper trunk all the way to the upper arm. Clarke and his group [34],[35] developed an alternative Active Movement Scale (AMS) in Toronto [Table 2]. They use this scoring and are prepared to wait for a much longer observation period to come to a decision. They also use the "Cookie" test around 8-9 months in children who are on the borderline of surgery and conservative treatment to make a final call regarding the indication of surgery. While there is merit in this system, the resource requirement in terms of physical and occupational therapists dedicated to this clinic, etc. exceeds that which is typically available. In addition, the system is cumbersome to administer at least in our circumstances at this point in time and may not offer a great advantage over Gilbert's rather simpler indication.
Table 1: Narakas classification

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Table 2: Toronto active movement scale of clarke and curti

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Waters, in a review, [36] has summarised the issue with the following observation: "Infants who recover partial antigravity upper trunk muscle strength in the first 2 months of life should have a full and complete recovery over the first 1-2 years of life. Infants who do not recover antigravity biceps strength by 5-6 months of life should have microsurgical reconstruction of the brachial plexus, as successful surgery will result in a better outcome than natural history alone. Infants with partial recovery of C5-C6-C7 antigravity strength during months 3 through 6 of life will have permanent, progressive limitations of motion and strength; they also are at risk for the development of joint contractures in the affected limb."

The author MRT personally uses Gilbert's criteria for the decision, i.e. if a child with upper plexus lesion does not have a biceps function exceeding MRC grade 3 (antigravity movement) at 3 months of age, then surgery is recommended for nerve repair. In cases where there is visible biceps contraction but triceps co-contraction preventing elbow flexion, or biceps being 2+ but not really 3, etc., we can wait and watch with/without botox to triceps up to 6 months by which time the picture is clear. If the bicpes continues to be under MRC grade 3, then surgery is better than conservative treatment.

 » Surgical Treatment Top

Surgery was pioneered by Kennedy (1903), [37] Sever (1916) [38] and Wyeth and Sharpe (1917). [39] However, Sever's results and paper were a dampener for future work for almost 50 years. It was only later that Gilbert, [40] Narakas, [41] Kawabata, [42] Millesi [43] and others started the surgical treatment again in the 80s, which gave remarkably impressive results.

Surgery in these indications consists of a complete exploration of the supra and infraclavicular plexus and nerve repair using microsurgical techniques based on merits, i.e. after assessing the injury and its pathophysiology, the surgeon can decide on the strategy to be used. Thatte et al.[44] have recently published a detailed paper describing the technique for exposure of the brachial plexus, which can be used for further reading. Typically, the preference in a total palsy is to hand function, while in an upper plexus it is of course to reconstruct the nerves for elbow and shoulder function. The suprascapular nerve (SSN) supplying the supra and infraspinatus is a crucial nerve for shoulder abduction and external rotation and needs to be targeted with priority, either from one of the roots or separately with the spinal accessory (XI) nerve as the donor. The lower trunk/medial cord for hand and musculocutaneous nerve (MCN) for biceps are the other priorities.

Intraplexus neurotisation thus uses existing healthy root stumps, which are ruptured for reconstruction by joining them with the distal target trunks, cords or nerves using nerve grafts. The source of nerve grafts is both sural nerves and the ipsilateral medial cutaneous nerve of forearm (MCNF) and superficial radial nerve (SRN), especially in global severe palsies if grafts are falling short. Not all cases may be of rupture; there can be avulsions as well, and therefore no roots may be available. Depending on the number of roots available, a policy is evolved for neurotisation.

Global palsy strategy

Four or five roots available: Very rare; just direct them to respective trunks/cords.

  • Three roots available: One each to medial, lateral and posterior cords. XI to SSN depending on the pathoanatomy of the upper trunk lesion.
  • Two roots available: Root 1 to lower trunk/medial cord, Root 2 to lateral cord (or shared between lateral and posterior cords) and XI to SSN. Some authorities would prefer Root 2 to posterior division of upper trunk/posterior cord and 2 or 3 intercostal nerves (ICNs) to biceps. Their point is getting a strong triceps and a stable shoulder with deltoid and triceps as well as the rotator cuff is important to balance a well-recovered biceps. This is logical; however, the addition of ICNs adds to surgical time, blood loss and increases surgical risks and morbidity and needs to considered carefully before attempting. In well-equipped centres with blood bank support, ICU for children and experienced anaesthesiologists, it can be done if the child is fit.
  • One root available: Root to lower trunk/medial cord + XI to SSN, 2 or 3 ICNs to biceps. Shoulder will need secondary transfers if possible.
  • Zero roots - rare total avulsion: Opp. C7 root (posterior division) to lower trunk/medial cord and XI to MCN or XI to SSN and ICNs to MCN plus one ICN to long head of triceps. If the child is healthy and fit for prolonged anaesthesia-or stagger in a second session in a couple of months if there is any concern on this count.
  • Upper plexus: C5-C6
  • Both roots available: Typically C5 to anterior division of upper trunk and C6 to posterior division of upper trunk.
  • One root available: Root to anterior division of upper trunk (or both divisions if they are of really good quality with plenty of healthy axons) and XI nerve to SSN. ICNs can be used for additional neurotisation depending on situation and fitness.

 » Distal Nerve Transfers Top

The entire protocol given above is without considering the additional use of distal nerve transfers in upper plexus lesion. Following the description by Oberlin [45] and Somsak [46] of nerve transfers for elbow flexion and deltoid reinnervation, the whole landscape in adult plexus injury changed dramatically. This philosophy is now coming in play in the OBPI reconstruction as well in selected cases. Oberlin [45] described the use of motor fascicles of the ulnar nerve for reinnervation of the biceps via the MCN.

Subsequently, this has been modified to ulnar to biceps and median to brachialis. Somsak [46] described the use of the branch to long head of triceps for the anterior division of the axillary nerve to reinnervate the deltoid. The interesting point about distal transfers is the speed of neurotisation, since the nerve is coapted very close to the hilum of the muscle and the growing axons reach the end plates much faster.

In upper plexus lesions (C5, C6), these transfers allow for leaving the neuroma undisturbed and doing a triple transfer consisting of XI to SSN, Oberlin and Somsak transfers to reconstruct shoulder abduction and external rotation, as well as elbow flexion. If the C7 is involved, then the triceps is often not functioning and the Somsak transfer is not possible; it also often means wrist extension is affected. In such cases, ICNs can be used for the deltoid as described by Somsak [47] and intraplexal neurotisation can be used for the C7 posterior division to help reinnervate both triceps and wrist extension.

There is considerable disagreement about this. The two European doyens, Gilbert and Raimondi, [48] argue that if roots are available, it is preferable to do a classical reinnervation and reserve distal transfers for later use. This allows reinnervation of all muscles supplied by those trunks/cords in a proper manner and yet leaves the distal transfers in reserve in case of unfavourable outcome. As mentioned earlier, distal transfers can be done at a late stage as they reach the muscle very rapidly. There is also no conclusive evidence in the form of a properly conducted prospective study to show that distal transfers give better results compared to classical neurotisation in the long run.

In the Indian scenario, distal transfers have a great benefit of targeting select muscles with no visible function without cutting the neuroma. Thus, for late referrals where some movements are seen, these are not lost even temporarily due to resection of the neuroma. This has social implications in this country because many parents and grandparents are not willing to risk losing existing movements (however inadequate they may be) to gain an eventual better result. Gilbert has reported similar social taboos in the Middle East.

 » Authors' Choice Top

The authors prefer to explore every plexus irrespective of whether a distal transfer is subsequently planned [Figure 5]. If healthy roots are available, then we prefer to use them and keep distal transfers in reserve. [Figure 6]a-c shows function at 4 years after intraplexal neurotisation in infancy. Videos ( show function in another child with Narakas Grade IV palsy following intraplexal neurotisation. However, if there is paucity of good roots or avulsion, then a judicious combination of intraplexus neurotisation and distal transfers is preferred. Videos ( show the results of contralateral C7 transfer to medial cord in a root avulsion case. Ultimately, each surgeon has to be aware of all options and use his/her judgement to make informed choices. All the options given above are open to interpretation and individual modifications based on personal experience and the situation faced during surgery.
Figure 5: Exposed plexus with intraplexus repair using nerve grafts

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Figure 6: (a) Shoulder function; (b) elbow function; (c) hand function

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 » Secondary Surgery Top

Secondary surgery is performed to treat either untreated older children or as a follow-up to primary nerve reconstruction. Secondary surgery involves surgery on shoulder, elbow as well as the hand.


Typically, shoulder surgery is performed to treat an internal rotation (IR) contracture combined with poor abduction. This is typically caused by co-contraction of abductors with adductors and internal with external rotators. The deltoid and supraspinatus along with the trapezius and serratus anterior are involved in various stages of shoulder abduction. The infraspinatus and teres minor are external rotators, while four big muscles, viz. pectoralis major (PM), teres major (TM), latissimus dorsi (LD) and subscapularis (SS), are involved in adduction and IR. In the recovering plexus (both natural and in those with nerve reconstruction), there is a tendency of mix-up of the growing axons to target muscles. This results in co-contraction of these groups. In such a battle, the four big muscles mentioned above are the invariable winners leading to an IR contracture and an inability to abduct fully. If the anterior and posterior axillary folds of these children are felt during an attempted abduction, this co-contraction of one or both folds (containing the PM, TM and LD, respectively) can be easily felt and helps determine the choice of muscle to release and transfer. IR contracture, if allowed to persist, leads to glenoid deformation and posterior subluxation of the humeral head. It is advisable to prevent this by early surgery in these instances to restore function and avoid deformity. Mallet's score [49] is often used to assess the shoulder function before and after surgery [Table 3]. Gilbert [50] also used a scoring system for shoulder [Table 4]. The author in the same journal in the June 2011 issue [51] has published a detailed discussion on the shoulder surgery.
Table 3: The Mallet score

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Table 4: Gilbert score for shoulder results

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Surgery is directed towards restoration of either flexion or extension. For elbow flexion, typical transfers are triceps to biceps and Steindler's flexoroplasty. Rarely, an LD transfer can be theoretically used, but the author has no experience of it in OBPI. For extension, the transfer of choice is deltoid to triceps. The posterior half of the deltoid is detached and extended with fascia lata to attach it to the triceps insertion.


Raimondi [52] [Table 5] describes an excellent system of assessing the hand. A plethora of tendon transfers can be used to improve hand function. They are based on standard tendon transfers done for peripheral nerve lesions and very valuable insights gained through the voluminous Indian work on leprosy tendon transfers. But there are a few caveats for transfers in the hand following OBPI, given as follows:

  • OBPI cases have relatively weaker donors to achieve the desired function as the donor muscle too is often reinnervated. Full function, therefore, may not be achieved.
  • Children keep recovering hand function for 3-4 years both naturally as well as after nerve surgery (unless of course you know that a particular nerve is not targeted at all).
  • It is better to splint with appropriate splints in the interim.
  • Start transfers only after about 3.5-4 years to get optimum results.
Table 5: Raimondi score for hand function

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 » Discussion Top

OBPI has seen a renaissance since the 1980s. It is now clear it is not only Erb's palsy or C5, C6 injury. In a study by Gilbert et al., [53] C5, C6 was damaged in 46.5% and C5, C6, C7 in 28.9%. All roots were damaged in 24.5% of which almost all were avulsions. In the authors' own series, for those who underwent primary nerve surgery. C5, C6 Narakas Gr.I was 29%, C5,C6,C7 Narakas Group II was 24%, C5-T1 Narakas Group III was 40% and C5-T1 with Horner's Narakas Froup IV was 7%. Thus our data too showed the same fact.

It now appears quite clear that unless strong social and cultural factors (this can be very common in India where the family is not willing to temporarily lose any existing movement) intervene, it is better to resect a neuroma than to do neurolysis. This has been well documented by Clarke's group. [54] Several review articles have contributed to this discussion. [1],[34],[36],[53],[54],[55],[56],[57] On the whole, everyone agrees about expert consultation in neonates, early diagnosis and follow-up and quick decision about nerve suirgery if the various assessment modalities, i.e. either Gilbert's or the AMS score from Toronto, indicate the need.

Assessment of results and each other's results has always been a problem. This makes the work of people doing systematic reviews very difficult. [1] Capek et al.[54] have shown that Mallet's score and the Toronto AMS are both reliable for documenting function, etc. In the authors' view, the Raimondi Hand score [52] too is a very useful tool for assessment and documentation.

Finally we would conclude that surgery for OBPI is rewarding, early decisions are very helpful in long term results and that these children need to be seen early by experts in the field.

 » Conclusions Top

  • OBPI is a relatively neglected field in this country.
  • Currently it is showing one of the fastest growths amongst surgeons interested in nerve surgery.
  • Considering the incidence, the need and potential for doing some good is immense.
  • Early primary nerve surgery, when indicated, is strongly recommended.
  • In late referrals, distal nerve transfers and secondary reconstruction can yield useful results.
  • No child should be abandoned; there is always some useful function that can be improved.
  • The brachial plexus surgeon can never comment about medico-legal liability, as he/she is unaware of the emergency that could have developed intrapartum, which necessitated the traction manoeuvres.

 » References Top

1.Pondaag W, Malessy M, van Dijk JG, Thomeer R. Natural history of obstetric brachial plexus palsy: A systematic review. Dev Med Child Neurol 2004;46:138-44.  Back to cited text no. 1
2.Smellie W. Collection of preternatural cases and observations in Midwifery. Vol 3. London: Wilson and Durham; 1764.  Back to cited text no. 2
3.Duchenne GB. De l'Electrisation Localisee et de son Application a la Pathologie et a la Therapeutique. 3rd ed. Paris: Bailliere; 1872.  Back to cited text no. 3
4.Erb WH. Ueber eine eigenthumliche localisation von lahmungen in plexus brachialis. Verh Dtsch Natur Med 1874;2:130.  Back to cited text no. 4
5.Greenwald AG, Schute PC, Shiveley JL. Brachial plexus birth palsy: A 10- year report on the incidence and prognosis. J Pediatr Orthop 1984;4:689-92.  Back to cited text no. 5
6.van Ouwerkerk WJ, van der Sluijs JA, Nollet F, Barkhof F, Slooff AC. Management of obstetric brachial plexus lesions: State of the art and future developments. Childs Nerv Syst 2000;16:638-44.  Back to cited text no. 6
7.Waters PM. Comparison of the natural history, the outcome of microsurgical repair, and the outcome of operative reconstruction in brachial plexus birth palsy. J Bone Joint Surg [Am] 1999;81:649-59.  Back to cited text no. 7
8.Bradley WG, Daroff RB, Fenichel GM, Marsden CD. Neurology in Clinical Practice. 2nd ed. Boston: Butterworth- Heinemann; 1996.  Back to cited text no. 8
9.Greenberg MS. Handbook of Neurosurgery. 5th ed. New York: Thieme; 2001.  Back to cited text no. 9
10.Laurent JP, Lee RT. Birth-related upper brachial plexus injuries in infants: Operative and non-operative approaches. J Child Neurol 1994;9:111-7.  Back to cited text no. 10
11.Painter MJ, Bergman I. Obstetrical trauma to the neonatal central and peripheral nervous system. Semin Perinatol 1982;6:89-104.  Back to cited text no. 11
12.Shenaq SM, Berzin E, Lee R, Laurent JP, Nath R, Nelson MR. Brachial plexus birth injuries and current management. Clin Plast Surg 1998;25:527-36.  Back to cited text no. 12
13.Terzis JK, Papakonstantinou KC. Management of obstetric brachial plexus palsy. Hand Clin 1999;15:717-36.  Back to cited text no. 13
14.Jennett RJ, Tarby TJ, Kreinick CJ. Brachial plexus palsy: An old problem revisited. Am J Obstet Gynecol 1992;166:1673-6.  Back to cited text no. 14
15.Gherman RB, Murphy Goodwin T, Ouzounian JG , Miller DA, Paul RH. Brachial plexus palsy associated with cesarean section: An in utero injury? Am J Obstet Gynecol 1997;177:1162-4.   Back to cited text no. 15
16.Koenigsberger MR. Brachial plexus palsy at birth: Intrauterine or due to delivery trauma? Ann Neurol 1980;8:228.  Back to cited text no. 16
17.Dunn DW, Engle WA. Brachial plexus palsy: Intrauterine onset. Pediatr Neurol 1985;1:367-9.  Back to cited text no. 17
18.Gilbert M, Nesbitt T, Danielsen B. Associated Factors in 1611 Cases of Brachial Plexus Injury. Obstet Gynecol 1999;93:536-40.  Back to cited text no. 18
19.Rouse DJ, Owen J, Goldenberg RL, Cliver SP. The effectiveness and costs of elective cesarean delivery for fetal macrosomia diagnosed by ultrasound. JAMA 1996;276:1480-6.  Back to cited text no. 19
20.Lindsay B. Kolderup LB, Laros RK, Musci TJ, Incidence of persistent birth injury in macrosomic infants: Association with mode of delivery. Am J Obstet Gynecol 1997;177:37-42.  Back to cited text no. 20
21.Sunderland S. Nerves and Nerve Injuries. London: Churchill Livingstone; 1978.  Back to cited text no. 21
22.Bradley WG, Daroff RB, Fenichel GM, et al. Neurology in clinical practice. 2 nd ed. Boston: Butterworth-Heinemann; 1996.  Back to cited text no. 22
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  [Figure 1], [Figure 2], [Figure 3], [Figure 4], [Figure 5], [Figure 6]

  [Table 1], [Table 2], [Table 3], [Table 4], [Table 5]

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