Experiment Of Endoscopic Mini-Incision Therapeutics In Hallux Valgus Surgery

Purpose: To explore the availability and safety in hallux valgus surgery, which is practiced under arthroscope.Method: We prepared 9 specimen of foot. Fist of all, for the lateral release, 2 portals are made, the arthroscope is introduced into the portals. Release the lateral soft tissue and capsule. Then the arthroscope is introduced into medial capsule by portals in medial side, the bony bunion can be removed using arthroscopic burr under direct arthroscopicⅥsualization. After this, we plicate the medial capsule which can retrieve hallux valgus. After operation, we measure the No.1 metatarsophalangeal angle, which can be contrasted with the No.1 metatarsophalangeal angle of pre-operation. Then we dissect the foot specimen, measure the distance between the medial and lateral port and the nerves, vessels and tendons.Result: We complete the lateral release under arthroscope, we release the lateral capsule and adductor hallucis caput obliquum routly, in some specimen, we release adductor hallucis caput transversum and ligamentum metatarsus-sesamoideum. In medial side, the bony bunion is removed using arthroscopic burr under direct arthroscopicⅥsualization. After this, we plicate the medial capsule strictly. And though contrast the No.1 metatarsophalangeal angle of pre-operation and after-operation, we find significant difference is exist. The average distance between the proximum port and extensor hallucis breⅥs is 1.8mm, and the average distance between the proximum port and extensor hallucis longus is 3.0mm, the average distance between the proximum port and deep peroneal nerve is 4mm. The average distance between the distally port and deep peroneal nerve is 2mm, the average distance between the distally port and extensor hallucis longus is 2mm.Conclusion: It’s possible to release the lateral soft tissue and capsule under direct arthroscopicⅥsualization, but we must be very careful when we are do operation, to avoid the possibility of injure deep peroneal nerve. When remoⅥng the bony bunion which is locate at the medial side of No. 1 metatarsal bone, we must avoid to injure the arthrodial cartilage. After contrast No.1 metatarsophalangeal angle of pre-operation and after-operation, we get a conclusion: It is effectⅣe to cure hallux valgus using arthroscope.