Kura H, Luo Z P, Kitaoka H B, An K N
Biomechanics Laboratory, Mayo Clinic Foundation, Rochester, MN 55905, USA.
Clin Orthop Relat Res. 1998 Sep(354):235-40. doi: 10.1097/00003086-199809000-00028.
The role of the medial capsule and transverse metatarsal ligament in hallux valgus deformity including stability of the first metatarsophalangeal and adjacent joints was investigated in vitro. The three-dimensional positions of the proximal phalanx, first metatarsal, and second metatarsal before and after sectioning the medial capsule and metatarsal ligament were measured using a magnetic tracking system. Valgus deformity of the hallux increased with medial capsule sectioning an average of 22.3 degrees +/- 6 degrees. Valgus deformity of the hallux increased with medial capsule and metatarsal ligament sectioning an average of 27.4 degrees +/- 9.1 degrees. Valgus deformity of the hallux did not change significantly after sectioning the metatarsal ligament only. No significant changes were found in varus and eversion of the first metatarsal, in valgus of the second metatarsal, in the distance between first and second metatarsal heads after sectioning the medial capsule, or in the metatarsal ligament. This study shows the importance of the medial capsule in hallux valgus deformity. The transverse ligament did not contribute substantially to cause the deformity.
在体外研究了内侧关节囊和跖横韧带在拇外翻畸形中的作用，包括第一跖趾关节及相邻关节的稳定性。使用磁跟踪系统测量了切断内侧关节囊和跖韧带前后近节趾骨、第一跖骨和第二跖骨的三维位置。切断内侧关节囊后，拇外翻畸形平均增加22.3度±6度。切断内侧关节囊和跖韧带后，拇外翻畸形平均增加27.4度±9.1度。仅切断跖韧带后，拇外翻畸形无明显变化。切断内侧关节囊后，第一跖骨的内翻和外翻、第二跖骨的外翻、第一和第二跖骨头之间的距离以及跖韧带均未发现明显变化。本研究表明内侧关节囊在拇外翻畸形中的重要性。横韧带对畸形的形成没有实质性作用。
