Repair of forearm and wrist tissue defect by free composite tissue flap transfer (9 cases) (4) Secondary nerve and tendon repair following pedicled skin flap or fascial flap.

The main reasons were due to the defect in the design of safety valve secondary circuit and the overlap of the service rating and the setting for safety valve popping and reseating.

Malformations in secondary palate fusion will lead to cleft palate, a common human birth defect.