We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Comparisons of kinematics and range of motion in high-flexion total knee arthroplasty: cruciate retaining vs. substituting designs.
- Authors
Seon, Jong-Keun; Park, Ju-Kwon; Shin, Young-Joo; Seo, Hyung-Yeon; Lee, Keun-Bae; Song, Eun-Kyoo
- Abstract
Purpose: The purpose of this study was to compare in vivo kinematics, range of motion, and functional outcomes in patients that received either a high-flexion cruciate retaining or a high-flexion cruciate substituting knee. Methods: Forty-eight high-flexion cruciate retaining (CR) and 47 high-flexion cruciate substituting (PS) knees were included in this study and followed for an average of 27 months (24-33). Weight-bearing and non-weight-bearing maximal flexions and functional scores were compared between two groups. For kinematics evaluations, amount of posterior femoral roll-back and internal tibial rotation from 0° to maximal flexion using lateral radiographs under weight-bearing conditions were also compared. Results: Average weight-bearing maximal flexion was 126.3° in the PS group, which was significantly higher than the 115.0° in the CR group. Average functional scores showed no significant difference between the two groups. In terms of kinematics, the average amount of posterior femoral roll-back during full flexion was 9.6 mm in the PS group and 6.1 mm in the CR group, which was a significant difference. However, internal tibial rotation during full flexion was not significantly different in the two groups. Conclusion: PS high-flexion TKA provided greater weight-bearing maximal flexion and posterior femoral roll-back than CR high-flexion TKA, although no difference in clinical outcomes was observed between the two prosthesis designs. Level of evidence: I.
- Subjects
TOTAL knee replacement; KNEE surgery; BIOMEDICAL materials; RADIOGRAPHY; TIBIA injuries
- Publication
Knee Surgery, Sports Traumatology, Arthroscopy, 2011, Vol 19, Issue 12, p2016
- ISSN
0942-2056
- Publication type
Article
- DOI
10.1007/s00167-011-1434-z