the medial femur condyle periosteal flap pedicled with articular branch of descending genicular artery, and its saphenous branch was the pedicel of proximal tibial periosteal flap;

• 膝降动脉关节支为蒂的股骨内髁骨膜瓣、其隐支为蒂的胫骨上段骨膜瓣；