Radiographic Analysis of Tibial-Articular Surface Angle According to the Selection of the Mechanical Axis.
- Author:
Jin Sung PARK
1
;
Soon Taek JEONG
;
Sun Chul HWANG
;
Dong Hee KIM
;
Ji Yong GWARK
;
Hong Kwon YOON
;
Dae Cheol NAM
Author Information
1. Department of Orthopaedic Surgery, Gyeongsang National University, College of Medicine, Jinju, Korea. ortho87@naver.com
- Publication Type:Original Article
- Keywords:
Mechanical axis;
Tibial-articular surface angle;
Radiographs
- MeSH:
Animals;
Ankle;
Axis, Cervical Vertebra;
Congenital Abnormalities;
Extremities;
Hip Joint;
Knee Joint;
Leg;
Lower Extremity
- From:Journal of Korean Foot and Ankle Society
2013;17(3):189-195
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: We investigated a statistical difference of tibial-articular surface (TAS) angles between radiographs of standing ankle anteroposterior (AP) and whole lower extremity view, and evaluated whether the tibial axis obtained from the standing ankle AP view reflects the original mechanical axis of lower extremity. MATERIALS AND METHODS: Both the standing ankle AP and whole lower extremity view were taken from 60 legs of 30 healthy volunteers without a history of ankle surgery or deformity of lower limb. To determine the tibial axis, Takakura's and Hintermann's method were employed in the standing ankle AP view. To compare these results with the original TAS angle, ANOVA and multiple comparison test were used. RESULTS: The mean TAS angle was 88.3 degrees(from hip joint to ankle), 89.5 degrees (from knee joint to ankle), 88.5 degrees (Takakura's method), and 90.2 degrees(Hintermann's method). Although there was a statistical significance (p=0.000) between these results, Takakura's method had no significant difference, compared to the results of whole extremity view by the multiple comparison test. CONCLUSION: The tibial axis obtained by Takakura's method reflects the original mechanical axis of lower extremity. When a surgical procedure is planned, however, it is necessary to consider that the ankle radiographs do not provide any information on the proximal deformity without the whole lower extremity view.
