Post-traumatic dynamic hallux varus instability

Abstract

Acquired hallux varus secondary to traumatic disruption of the lateral joint structures of the 1st MTPJ is uncommon and has only been reported in the literature once previously.(4) We present a case of traumatic hallux varus that is unique since the deformity is dynamic in nature. In our patient the hallux remained reduced on standing weight bearing films, and luxated only during fluoroscopic stress testing. We also describe our surgical correction where a soft tissue anchor alone was utilized to stabilize the joint through repair of the lateral capsule and collateral ligament. One year following the described repair the patient reports no limitations in performing activities of daily living, and complains of only mild pain with recreational activities.

First Metatarsophalangeal Lateral Collateral Ligament Repair in an Athlete

“…Labovitz and Kaczander described using a suture anchor to further tighten the lateral capsule to the MTP head after medial capsular lengthening and lateral capsular suture imbrication were insufficient intraoperatively 16 , and Ryan et al described an alternative suture anchor technique with the anchor placed in the proximal phalanx. 17 . Although both reports note return to full activity, these patients underwent a period of non–weight-bearing and prolonged immobilization.…”