Ankle Morphometry in the Chinese Population
Date Issued
2009
Date
2009
Author(s)
Lee, Kuan-Ying
Abstract
Modern designs are now contributing to a remarkable renewed interest in total ankle arthroplasty (TAA), but TAA is still not as successful as total hip and total knee arthroplasty. Among the remaining issues there is the design of the prosthesis components, which are often claimed to be ''anatomical'' or compatible with the bony and ligament structures. However, very little is reported in the literature about the morphology of the distal tibia and proximal talus. Not a single is dedicated to the ankle morphological parameters in the Chinese population, which are expected to be addressed particularly in prosthesis designs dedicated to meeting the requirements of oriental life style. The purpose of the current study was to bridge the gap.0 ankle/foot cadaver specimens without traumas or diseases (mean foot length: 22.03cm) were used for the current study. Each specimen was fixed at the neutral position by a plastic clip for preparation of computerized tomography (CT) scan with a slice thickness of 0.625 mm. The 3D model of the bones were constructed based on the CT data by utilizing Amira. A MATLAB program was designed to obtain the morphological parameters of the distal tibia and proximal talus. his bar chart compares the results of the current study and those reported by Stagni and Hayes et al. In addition to above morphological parameters, we also calculated the ratio of length over width for tibia and talus. We found that although the lengths and widths of the tibia were smaller in the Chinese, the radius were not different between habitants of the two regions. Generally, the shape of talus in Chinese populations is close to a square, which is different from the rectangle shape of the talus in Caucasian. Compared to the Caucasian population, radius of the trochlea tali arc of the Chinese population is 10.4% smaller. Radius of the tibial mortise arc is 34.45% smaller. Trochlea tali length is 20.57% smaller.
Subjects
Morphometry
Computerized axial tomography (CAT) scan
ankle joint
Prosthesis size
Chinese population
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-98-R96548020-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):3d74ff3c3158ae8d30dc38e1e743825f