title: Three-dimensional computer graphics-based ankle morphometry with computerized tomography for total ankle replacement design and positioning.
abstract: Morphometry of the bones of the ankle joint is important for the design of joint replacements and their surgical implantations. However, very little three-dimensional (3D) data are available and not a single study has addressed the Chinese population. Fifty-eight fresh frozen Chinese cadaveric ankle specimens, 26 females, and 32 males, were CT-scanned in the neutral position and their 3D computer graphics-based models were reconstructed. The 3D morphology of the distal tibia/fibula segment and the full talus was analyzed by measuring 31 parameters, defining the relevant dimensions, areas, and volumes from the models. The measurements were compared statistically between sexes and with previously reported data from Caucasian subjects. The results showed that, within a general similarity of ankle morphology between the current Chinese and previous Caucasian subjects groups, there were significant differences in 9 out of the 31 parameters analyzed. From a quantitative comparison with available prostheses designed for the Caucasian population, few of these designs have both tibial and talar components suitable in dimension for the Chinese population. The current data will be helpful for the sizing, design, and surgical positioning of ankle replacements and for surgical instruments, especially for the Chinese population.
authors: Institute of Biomedical Engineering, National Taiwan University, Taipei, Taiwan, Republic of China; Department of Orthopedics, China Medical University Hospital, Taichung, Taiwan, Republic of China.
authors: Chien-Chung
authors: CC
authors: Kuo
authors: Hsuan-Lun
authors: HL
authors: Lu
authors: Alberto
authors: A
authors: Leardini
authors: Tung-Wu
authors: TW
authors: Lu
authors: Mei-Ying
authors: MY
authors: Kuo
authors: Horng-Chaung
authors: HC
authors: Hsu
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000843:Ankle Joint / Q000033:anatomy & histology* / Q000000981:diagnostic imaging; D058737:Arthroplasty, Replacement, Ankle; D044466:Asian People; D005260:Female; D006801:Humans; D021621:Imaging, Three-Dimensional; D007595:Joint Prosthesis; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D012016:Reference Values; D013628:Talus / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D013977:Tibia / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D014057:Tomography, X-Ray Computed; D044465:White People
keywords: ankle; morphometry; total ankle replacement