OBJECTIVE: To investigate the anatomic basis for transposition of the distal dorsal ulna bone flap pedicled with dorsal metacarpal artery to repair the defect of the 3rd or 4th and 5th metacarpal bone head. METHODS: In 30 adult cadaveric upper limbs, the branches and constitutions of the dorsal carpal arterial networks were observed. RESULTS: The dorsal carpal arterial networks were consisted of the dorsal carpal branches of ulnar and radial arteries, the terminal branches of posterior interosseous artery and the dorsal carpal branch of anterior interosseous artery, and then the 2nd, 3rd, 4th dorsal metacarpal branches were originated from the networks. The dorsal metacarpal branches were anastomosed with the deep branches of deep palmar arch to constitute the dorsal metacarpal artery. CONCLUSION: Transposition of the distal dorsal ulna bone flap pedicled with the 3rd, 4th dorsal metacarpal arteries can be used in repairing the defect of 3rd, 4th and 5th metacarpal bone head.
Objective To review the current status and advances of the correlation between traumatic brain injury (TBI) and fracture healing. Methods The related domestic and abroad literature about the correlation between TBI and fracture healing was extensively reviewed and analyzed. Results There are a variety of studies on the correlation between TBI and fracture healing, which can be divided into two major aspects: revascularization and osteogenesis; the local and systemic changes of the neuropeptide and hormone after TBI. Conclusion TBI facilitates callus formation, the further research is needed to clarify the exact mechanism.