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Biomedical subjects

M A Shannon

Publications and source records attributed to M A Shannon.

6 recordsLinked to original sources
PubMed1985

Restoration of strong grasp and lateral pinch in tetraplegia: a comparison of two methods of thumb control in each patient.

Six patients with spinal cord injury who ranged in age from 25 to 42 years were selected for surgery that used a tendon transfer for opposition-adduction of one thumb and arthrodesis of the carpometacarpal joint of the other in each patient. At follow-up 2 to 6 years later, the hands with the opponens-adductorplasty had a slightly stronger lateral pinch (3.75 kg versus 3.31 kg), but the hands with the carpometacarpal arthrodesis had a somewhat stronger grasp (7.42 kg versus 6.86 kg). The patients did not exhibit a consistent preference for either method, but rather, were particularly pleased that their hands had been reconstructed differently, thereby allowing each to be somewhat "specialized" for certain activities.

Adult↗
PubMedDate not supplied

Avascular necrosis in congenital hip dysplasia: the effect of treatment.

Fifty-one patients known to have developed avascular necrosis during treatment for congenital hip dislocations were studied. Thirty-nine patients were followed for a mean of 23 years, 7 months. They were classified as to the severity of involvement, the subsequent treatment provided, and their final result. The greater the involvement, the worse the outcome. Residual subluxation of hips resulted in a poor prognosis. Intervention with open reduction did not result in success. Varus femoral osteotomies and acetabuloplasties met with limited success. Total hip replacements have not resulted in long-term success.

Adolescent↗