微创截骨治疗拇趾外翻稳定与愈合原理分析

Analysis of stability and healing on minimally invasive osteotomy for the treatment of hallux valgus

微创截骨治疗拇趾外翻采用微创技术在第1跖骨头颈部截骨,使用"8"字绷带外固定,疗效确定。通过对其原理分析提出使用削磨钻在跖骨颈部截骨,增加了摩擦系数、减少了杠杆力,是截骨稳定的前提。保持正确的二维截骨方向和适宜的角度,是截骨端稳定的保证。"8"字绷带外固定符合弹性固定的原则,为截骨端微动创造了条件,与内固定比较更符合截骨愈合的过程,截骨端稳定,以软骨成骨方式Ⅱ期间隙愈合。

To treat hallux valgus,minimally invasive osteotomy on 1st metatarsal neck,immobilization with ＂8-shape＂ bandagev was performed,and the effect was definited. The principles of osteotomy stability were analyzed from the osteotomy position,methods,direction and angle. The grinding drill was used to increase friction coefficient between the ends of osteotomy. Correct direction of osteotomy and suitable angle were the key point of stability. The immobilization with ＂8-shape＂ bandage complied with the principle of elastic fixation created the conditions for the slight movement of the osteotomy ends. Compared with internal fixation,it was better on osteotomy healing,and the osteotomy ends were stable and healed with cartilage osteogenesis.