Related Experiment Video
Updated: May 28, 2026

Development of a Neonatal Rat Model for Brachial Plexus Birth Injury
Published on: March 27, 2026
[Current concepts in perinatal brachial plexus palsy. Part 2: late phase. Shoulder deformities]
1Hospital Nacional de Pediatría Prof. Dr. Juan P. Garrahan, CABA. andresdogliotti@yahoo.com.ar
Abstract:
The incidence of obstetric brachial palsy is high and their sequelaes are frequent. Physiotherapy, microsurgical nerve reconstruction and secondary corrections are used together to improve the shoulder function. The most common posture is shoulder in internal rotation and adduction, because of the antagonist weakness. The muscle forces imbalance over the osteoarticular system, will result in a progressive glenohumeral joint deformity which can be recognized with a magnetic resonance image. Tendon transfers of the internal rotators towards the external abductor/rotator muscles, has good results, but has to be combined with antero-inferior soft-tissue releases, if passive range of motion is limited.
More Related Videos
Related Concept Videos
Spinal Nerves: Plexus I
The Cervical Plexus
The cervical plexus, formed by the anterior rami of the first four...
Healing II: Complications
Secondary Spinal Cord Injury llI: Pathophysiology
Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
Spinal Nerves: Plexus II
The Lumbar Plexus
The lumbar plexus is situated within the lumbar region of the back and is primarily formed by the first four lumbar spinal nerves (L1 to L4). This plexus extends its branches into several nerves, including the...
Spinal Cord Injury ll: Pathophysiology

