A Comparative Study between High-Flex and Non High-Flex TotalKnee Arthroplasty.
10.4055/jkoa.2007.42.3.360
- Author:
Jeong Seok MOON
1
;
Kun Sik YU
;
Chul Won HA
Author Information
1. Department of Orthopedic Surgery, Samsung Medical Center, School of Medicine, Sungkyunkwan University Seoul, Korea. hacw@smc.samsung.co.kr
- Publication Type:Comparative Study ; Original Article
- Keywords:
Knee;
High-flex design;
Total knee arthroplasty
- MeSH:
Arthroplasty*;
Follow-Up Studies;
Knee;
Range of Motion, Articular
- From:The Journal of the Korean Orthopaedic Association
2007;42(3):360-365
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: The purpose of this study was to compare the clinical results of a high-flex design (Scorpioflex(R), Stryker) in total knee arthroplasty with those of a non-high-flex design (Scorpio(R) PS type, Stryker). MATERIALS AND METHODS: Fifty-two knees with at least 120 degrees of further flexion preoperatively underwent total knee arthroplasty. Of the 52 knees, there were 35 knees in the high-flex design (HF group) and 17 knees in the non high-flex design (non-HF group). The clinical results were evaluated by postoperative further flexion at 3 months, 6 months, 1 year, 2 years and 3 years, as well as by Delta flexion, which means postoperative flexion improvement. The Knee Society Score and X-rays were evaluated preoperatively and at the 3-year follow-up. RESULTS: The HF group showed significantly greater flexion than the non-HF group at 3 months postoperatively (p=0.000). The delta flexion was also greater in the HF group at 3 months postoperatively (p=0.000). The Knee Society Score and X-rays were similar in the two groups at the final follow-up (p>0.05). CONCLUSION: High-flex total knee arthroplasty appears to facilitate greater flexion in the first 3 months postoperatively, but there is no significant difference between both groups with regard to the range of motion, clinical and radiographic variables after 3 months.
