Effects of lateral ligament sectioning on the stability of the ankle and subtalar joint

• DOI: 10.1002/jor.21407
• Publication Date: 2011-03-28T18:15:59Z
• Authors: Stacie I. Ringleb; Ajaya Dhakal; Claude D. Anderson; Sebastain Bawab; Rajesh Paranjape
• Keywords: Subtalar joint; Anterior talofibular ligament

Abstract Patients with subtalar joint instability are often diagnosed ankle instability. Only after a prolonged period of time in which patient does not improve treatment for is considered. To develop clinically relevant method to diagnose instability, the kinematics simulated unstable were examined. A 6 degree‐of‐freedom positioning and loading device was developed. Plantarflexion/dorsiflexion, inversion/eversion, internal/external rotation applied individually or as coupled motions along an anterior/posterior drawer. Kinematic data collected from sensors attached calcaneus, talus, tibia by keeping all ligaments intact, serially sectioning anterior talofibular ligament (ATFL), calcaneofibular (CFL), cervical ligament, talocalceneal interosseous ligament. results reported using Euler angles. The ATFL CFL contributed talocrural similar previous studies. greatest contributor stability. hindfoot motion (calcaneus relative tibia) showed significant increases when and/or made be unstable. Therefore, it difficult on physical examination alone. © 2011 Orthopaedic Research Society. Published Wiley Periodicals, Inc. J Orthop Res 29: 1459–1464,