The Influence of Symtomless Degenerative Changes of the Patellofemoral Joint on Clinical Results of Medial Unicompartmental Knee Arthroplasty.
10.4055/jkoa.2010.45.4.287
- Author:
Kyung Tae KIM
1
;
Song LEE
;
Kwan Soo KIM
;
Tae Woo KIM
;
Soon Youl PARK
Author Information
1. Department of Orthopedic Surgery, Seoul Sacred Heart General Hospital, Seoul, Korea. kktkimos@hanmail.net
- Publication Type:Original Article
- Keywords:
knee joint;
medial compartment;
patellofemoral joint;
degenerative arthritis;
unicompartmental arthroplasty
- MeSH:
Arthroplasty;
Follow-Up Studies;
Hand;
Knee;
Knee Joint;
Osteoarthritis;
Patellofemoral Joint;
Prospective Studies
- From:The Journal of the Korean Orthopaedic Association
2010;45(4):287-292
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
PURPOSE: To evaluate the influence of degenerative changes in the patellofemoral joint on the clinical results of medial unicompartmental knee arthroplasty (UKA). MATERIALS AND METHODS: Between January and December 2002, we operated on 180 cases of minimally invasive UKA using the Oxford(R) phase 3. Of the 180 cases, 156 were followed up for a minimum period of 5 years. Based on intraoperative degenerative findings of the patellofemoral joint, we classified cases into 4 groups (Group I-78 cases, Group II-40 cases, Group III-27 cases, Group IV-11 cases), and the clinical data were analyzed prospectively. RESULTS: During follow-up, which averaged 6 years and 2 months, the knee score, the knee function score, the range of knee motion and the tibiofemoral angle were improved significantly (p<0.05) in all groups. The preoperative knee score and the tibiofemoral angle in the mild degeneration group (I, II) were higher than in the severe degeneration group (III, IV) (p<0.05). On the other hand, there were no significant differences between the groups in the postoperative knee score, the knee function score, the range of knee motion and the tibiofemoral angle (p>0.05). To date, no complication or failure involving the patellofemoral joint has been observed. CONCLUSION: Clinical results of UKA are satisfactory for all groups, and the severity of patellofemoral degeneration has no influence on clinical outcome. Symptomless degenerative arthritis of the patellofemoral joint is not a contraindication for medial UKA.
