ACPOC - The Association of Children's Prosthetic-Orthotic Clinics Founded in 1978

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Use of Opposition Posts in Children

Eight children from the Shriners Hospitals for Crippled Children-Erie Unit were originally fit with either opposition-posted splints or prostheses. These children demonstrated congenital deficiencies of their upper extremity; either transcarpal, transmetacarpal or monodigital and were fitted with an opposition post against which the remnant hand could flex to grasp an object and still retain sensory feedback from this action.

A study was done to evaluate the response of the child to the device and overall use of the device functionally. Responses to a questionnaire are highlighted dealing with areas such as comfort, cosmesis, function, fit, adjustability and acceptance or rejection of the device.

Rejection rate of the opposition posts was very high with many of the patients preferring alternate terminal devices (voluntary opening and closing), myoelectric prostheses or no use of orthotic or prosthetic devices for optimum function. Fit, comfort and stability of the devices were major reasons given for rejection, though this is presently being improved with addition of a supracondylar socket housing the opposition post and is now being tested by a few of the patients originally fitted with splints.

Shriners Hospital for Crippled Children, 1645 W. 8th Street, Erie, PA 16505