Musculocutaneous Nerve Palsy Research Articles

Electromyography and Manual Muscle Testing in the Evaluation of a Musculocutaneous Nerve Injury

The purpose of this case study was to report the use of electromyography (EMG) and manual muscle testing (MMT) in evaluating a musculocutaneous nerve injury and monitoring its recovery. The patient had suffered recurrent dislocations of the left glenohumeral joint playing football. Subsequent to surgical repair of the joint, he developed a musculocutaneous nerve palsy. Evaluations that included concurrent MMT and EMG examinations were performed over a period of 38 months. The EMG detected evidence of regeneration earlier than MMT, suggesting that EMG should be considered a primary tool for evaluating nerve function, especially in the early stages. Manual muscle testing can give valuable information on the state of the nerve's functional return, especially when reinnervation is occurring. Results of the total evaluation, including EMG and MMT examinations, were utilized by the examiner in making clinical judgments about the state of recovery of the musculocutaneous nerve. J Orthop Sports Phys Ther 1991;13(2)85-88.

上肢外転挙上運動における二頭筋長頭けんの意義

This study is intended to pursue the role of the long head of the biceps (hereafter referred to as long head) in the abduction of the upper extremity, and to review the technique of reconstruction for the rupture of the long tendon by understanding the significance of the long head in shoulder movements.Subjects were the patients having the rupture of the long head in 6 shoulders and musculocutaneous nerve palsy in one shoulder. The eubjects were exercised for abduction of the upper extremity with scapular plane, then, locus was taken for the movement of glenoid fossa and the head of the humerus. This technique was performed before and after reconstruction of the tendon in the above mentioned cases, and the results were comparatively reviewed in time course.Comparison was made for the locus of glenoid fossa and the head of the humerus at motion time of abduction with the scapular plane of each stage in the above mentioned cases, and the following results were obtained.1. Rupture of the long head resulted in disorder, in the locus of glenoid fossa and the head of the humerus.2. After a long time, even the operation only to suture the ruptured long head into the bicipital groove without end-to-end suture resulted in showing the same locus of the head of the humerus and glenoid fossa as that of control.

Shoulder arthroplasty with the Neer Mark-II prosthesis.

Total shoulder joint replacement was used as primary intervention in 50 shoulders--35 with rheumatoid arthritis, eight with osteoarthritis, and seven with traumatic arthritis. Follow-up time was 27 (12-42) months. The primary indication for the operation was chronic severe pain; improvements in motion and function were secondary objectives. Relief of pain was obtained in 46 of 50 shoulders. The best results regarding pain, motion, and function were obtained in the osteoarthritic group. The majority of patients with rheumatoid arthritis obtained pain relief and the largest increase in range of motion occurred in this group, although full range of motion was never regained. The results in patients with traumatic arthritis seemed unpredictable. Two shoulders were complicated by glenoid loosening, one by humeral subluxation, and one by musculocutaneous nerve palsy.