Application of anatomical biomimetic reconstruction of the external rotators combined with repair of the zona orbicularis in unilateral artificial femoral head replacement

• Anatomical biomimetic reconstruction of the external rotators combined with zona orbicularis repair significantly improves postoperative hip function and range of motion compared to conventional suture methods. • The technique reduces intraoperative blood loss and incision length, with no significant increase in surgical time or complication rates. • The approach restores the anatomical position of the external rotators, minimizing dead space and promoting better joint stability and healing. • This novel technique offers a safe, economical, and effective alternative for posterior soft tissue reconstruction in artificial femoral head replacement.