Experimental study of subtalar and ankle joint in hind foot motion
- VernacularTitle:距下关节、踝关节对后足运动影响的实验研究
- Author:
Guangrong YU
;
Yunfeng YANG
;
Kai ZHANG
- Publication Type:Journal Article
- Keywords:
Ankle joint;
Foot;
Range of motion, articular
- From:
Chinese Journal of Orthopaedics
1999;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the properties of hind foot motion and it's changes in ankle or subtalar joint arthrodesis. Methods Eight fresh frozen adult leg-foot specimens were mounted in a coordinated system, a Steinmann pin was perforated across the calcaneus as a marker. The displacements of the marked points in the coordinated system were recorded when subtalar or ankle joint was fixed respectively. Through matrix translation and Euler equation, the angle of the calcaneus rotation were calculated, representing the motion of the subtalar and ankle joints in different condition, Statistical analysis were also taken between different conditions. Results Three dimensional (3-D) motion was observed in hind foot motion. The range of motion with ankle joint fixation was: inversion 15.99??2.81?, eversion 8.62??1.90?, dorsiflexion 3.70??1.00?, plantar flexion 5.87??1.39?, adduction 7.64??2.04?, and abduction 3.99??1.78?. When subtalar joint was fixed, they were: 7.13??1.07?, 5.52??0.85?, 17.09??2.87?, 30.75??5.04?, 10.77??1.56?, and 6.54??1.88? respectively. While they were 22.62??3.21?, 40.88??5.77?, 18.87??3.89?, 9.12??2.05?, 17.48??2.26? and 11.47??2.29?, when no joint was fixed. Arthrodeses of ankle or subtalar joint would affect the hindfoot motion significantly (P
