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Journal of Bone and Joint Surgery - British Volume, Vol 89-B, Issue 10, 1324-1328.
doi: 10.1302/0301-620X.89B10.19120  
Copyright © 2007 by British Editorial Society of Bone and Joint Surgery
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Association between radiological findings and symptoms at the patellofemoral joint in advanced knee osteoarthritis

C. B. Chang, MD, PhD, Assistant Professor1; I. Han, MD, Assistant Professor2; S. J. Kim, MS, PhD, Student3; S. C. Seong, MD, PhD, Professor2; and T. K. Kim, MD, PhD, Assistant Professor1

1 Joint Reconstruction Center, Seoul National University, Bundang Hospital, 300, Gumidong, Bundanggu, Seongnamsi, Gyunggido, Korea.
2 Department of Orthopaedic Surgery, Seoul National University, Hospital, 28 Yeongongdong, Chongnogu, Seoul, Korea.
3 Department of Statistics, Korea University, 5-1, Anamdong, Seongbukgu, 136-701 Seoul, Korea.

Correspondence should be sent to Dr T. K. Kim; e-mail: osktk{at}snubh.org

We investigated the association between the radiological findings and the symptoms arising from the patellofemoral joint in advanced osteoarthritis (OA) of the knee. Four radiological features, joint space narrowing, osteophyte formation, translation of the patella and focal attrition were assessed in 151 consecutive osteoarthritic knees in 107 patients undergoing total knee replacement. The symptoms which were assessed included anterior knee pain which was scored, the ability to rise from a chair and climb stairs, and quadriceps weakness.

Among the radiological features, only patellar translation and obliteration of the joint space had a statistically significant association with anterior knee pain (odds ratio (OR) 4.85; 95% confidence interval (CI) 1.83 to 12.88 and OR 11.23; 95% CI 2.44 to 51.62) respectively. Patellar translation had a statistically significant association with difficulty in rising from a chair (OR 9.06; 95% CI 1.75 to 45.11). Other radiological features, including osteophytes, joint space narrowing, and focal attrition had no significant association.

Our study indicates that the radiological findings of patellar translation and significant loss of cartilage are predictive of patellofemoral symptoms and functional limitation in advanced OA of the knee.




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Association between radiology and symptoms at the PFJ in knee OA
Saeed Al-Naser
J Bone Joint Surg Br Online, 31 Oct 2007 [Full text]

(c) British Editorial Society of Bone and Joint Surgery All Rights Reserved
Registered charity no: 209299     Print ISSN: 0301-620X
Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General