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Biomedical subjects

Alexander Y Shin

Publications and source records attributed to Alexander Y Shin.

39 records · Page 3Linked to original sources

Pedicled vascularized bone grafts for disorders of the carpus: scaphoid nonunion and Kienbock's disease.

The use of reverse-flow pedicled vascularized bone grafts from the dorsal distal radius makes it possible to transfer bone with a preserved circulation and viable osteoclasts and osteoblasts. The resultant primary bone healing without creeping substitution within the dead bone is an alternative to conventional bone grafting in aiding or accelerating healing, replacing deficient bone, and/or revascularizing ischemic bone. Recent advances in understanding the anatomy and physiology of vascularized pedicled bone grafts have increased their use in treating a variety of carpal maladies. A basic understanding of the vascular anatomy, as well as the surgical principles and experimental and clinical results of pedicled vascularized bone grafts from the dorsal distal radius, is critical to understanding the use of these grafts in the treatment of scaphoid nonunions and Kienbock's disease.

Bone Transplantation↗

Surgical treatment of congenital syndactyly of the hand.

Syndactyly is a congenital anomaly of the hand that is more common in males, is present bilaterally in 50% of affected patients, and often is associated with other musculoskeletal malformations or systemic syndromes. The goal of syndactyly release is to create a functional hand with the fewest surgical procedures while minimizing complications. For simple syndactyly, surgical reconstruction can begin at approximately 6 months, although many surgeons prefer to wait until the infant is 18 months old. Special situations, such as complex syndactyly and involvement of border digits, may warrant surgical intervention earlier than 6 months. Reconstruction of the web commissure is the most technically challenging part of the operation, followed by separation of the remaining digits. Full-thickness skin grafting is almost always required for soft-tissue coverage. Complex syndactyly and syndactyly associated with other hand anomalies warrant special consideration. After reconstruction, patients should be examined periodically until they have achieved skeletal maturity because late complications such as web creep can occur.

Hand Deformities, Congenital↗