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Restoration of Elbow Function by Intercostal Nerve Transfer for Obstetrical Paralysis with Co-Contraction of the Biceps and the Triceps

From the Department of Orthopaedic Surgery, Faculty of Medicine, University of Tokyo, Tokyo, Japan; and the Department of Orthopaedic Surgery, Hamamatsu University, School of Medicine, Hamamatsu, Japan

Correspondence: Dr Akira Nagano, MD, Professor, Department of Orthopaedic Surgery, Hamamatsu University School of Medicine, 1-21-1 Handayama, Hamamatsu 431-3192, Japan. Tel.: +81 53435 2297; fax: +81 53435 5005. E-mail:nagano{at}hama-med.ac.jp

Among the conservatively treated patients with obstetrical paralysis after delivery in the vertex presentation, cross reinnervation sometimes occurs in the course of their recovery and co-contraction of multiple muscles impairs smooth upper limb motion. Such co-contraction of the biceps and the triceps inhibits normal elbow motion, making it impossible to use the elbow effectively in daily activities, despite adequate strength in these muscles. To overcome biceps/triceps co-contraction, we performed intercostal nerve transfer to the musculocutaneous nerve for three patients of age 11 months, 6 years and 9 years, respectively, and to the motor branches of the triceps for two patients of age 4 and 14 year-old, respectively. During the average follow-up period of 5.6 (range 1–11.5) years, the power of the reinnervated muscle improved to more than M3, and smooth motion of the elbow independently of shoulder motion was restored.

Key Words: obstetrical paralysis • co-contraction • intercostal nerve transfer • elbow function

Journal of Hand Surgery (European Volume), Vol. 32, No. 4, 421-426 (2007)
DOI: 10.1016/J.JHSE.2007.03.004


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