J Korean Knee Soc.  2007 Dec;19(2):231-236.

Three Years Follow-up Results of High-flex Total Knee Arthroplasty

• Yoon YS
• Rah JH
• Oh JR
• Park HK
• Ryu HY

Abstract

PURPOSE: To evaluate the Three years clinical results of a total knee arthroplasty using the NexGen LPS-Flex fixed bearing system.
MATERIALS AND METHODS
One hundred knees(65 patients) which used the LPS-Flex system for primary TKA and were followed up for a minimum Three years were evaluated. Evaluations included preoperative and postoperative range of motion(ROM), factors affecting the postoperative ROM that included age of the patient, the body mass index, the flexion contracture, degree of varus deformity, and Hospital for Special Surgery score.
RESULTS
Knee ROM increased from preoperative 122.8 degrees to postoperative 130.5 degrees. The mean HSS score improved from preoperative 58.4 to postoperative 91.3. The femoral-tibial angle was changed from preoperative 6.4 degrees varus to a pos- toperative 5.5 degrees valgus. The most important factor that influenced the range of motion after an arthroplasty was the preoperative range of motion. One deep infection developed, but was cured with synovectomy and administration of antibiotics.
CONCLUSION
Primary TKR with NexGen LPS-Flex system showed satisfactory early results including excellent ROM. We found that preoperative ROM had a significant effect on postoperative ROM.

Keyword

Knee; Total Knee arthroplasty; High-flex

MeSH Terms

Anti-Bacterial Agents
Arthroplasty*
Body Mass Index
Congenital Abnormalities
Contracture
Follow-Up Studies*
Humans
Knee*
Range of Motion, Articular
Anti-Bacterial Agents