The role of muscle imbalance in the pathogenesis of shoulder contracture after neonatal brachial plexus palsy: a study in a rat model

Soldado, Francisco; Fontecha, César G.; Marotta, Mario; Benito, David; Casaccia, Marcelo; Mascarenhas, Vasco; Zlotolow, Dan A.; Kozin, Scott H.

doi:10.1016/j.jse.2013.09.031

Cited by 36 publications

(44 citation statements)

References 12 publications

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“…2a, b). Multiple studies have attributed contractures and bony deformity to muscle imbalance due to weak extensors and external rotators [26][27][28]. However, recent murine and computational studies have found that impaired longitudinal muscle growth results in more pronounced osseous deformity than muscle imbalance [29,30].…”

Section: Natural Historymentioning

confidence: 99%

The natural history and management of brachial plexus birth palsy

Buterbaugh

Shah

2016

Curr Rev Musculoskelet Med

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Brachial plexus birth palsy (BPBP) is an upper extremity paralysis that occurs due to traction injury of the brachial plexus during childbirth. Approximately 20 % of children with brachial plexus birth palsy will have residual neurologic deficits. These permanent and significant impacts on upper limb function continue to spur interest in optimizing the management of a problem with a highly variable natural history. BPBP is generally diagnosed on clinical examination and does not typically require cross-sectional imaging. Physical examination is also the best modality to determine candidates for microsurgical reconstruction of the brachial plexus. The key finding on physical examination that determines need for microsurgery is recovery of antigravity elbow flexion by 3-6 months of age. When indicated, both microsurgery and secondary shoulder and elbow procedures are effective and can substantially improve functional outcomes. These procedures include nerve transfers and nerve grafting in infants and secondary procedures in children, such as botulinum toxin injection, shoulder tendon transfers, and humeral derotational osteotomy.

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Section: Natural Historymentioning

confidence: 99%

The natural history and management of brachial plexus birth palsy

Buterbaugh

Shah

2016

Curr Rev Musculoskelet Med

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“…[12][13][14][15] Internal rotation posturing of the shoulder gradually forces the humeral head posteriorly due to weak active shoulder external rotation, loss of passive stretch, capsular contractures, and subsequent glenoid biconcavity or retroversion. 1,2,[16][17][18][19] If uncorrected, progressive glenohumeral dysplasia can lead to permanent shoulder deformity and limited motion. 20 Generally accepted treatment techniques to minimize dysplasia include therapy, closed reduction and casting (with or without BTX-A injections), tendon transfers, and arthroscopic or open reduction.…”

Section: Discussionmentioning

confidence: 99%

External Rotation Predicts Outcomes After Closed Glenohumeral Joint Reduction With Botulinum Toxin Type A in Brachial Plexus Birth Palsy

Greenhill

Wissinger

Trionfo

et al. 2018

Journal of Pediatric Orthopaedics

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“…In more than 60 % of patients, the natural evolution of BPBP, both among patients operated upon and in cases of spontaneous recovery, produces an internal rotation contracture of the shoulder due to the above-mentioned muscular imbalance [3][4][5].…”

Section: Discussionmentioning

confidence: 99%

“…This condition often progresses to an internal rotation contracture as a result of the partial innervation of the subscapular muscle and of the pectoralis major muscle [3].…”

Section: Introductionmentioning

confidence: 99%