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Journal of Bone and Joint Surgery - British Volume, Vol 87-B, Issue 8, 1081-1084.
doi: 10.1302/0301-620X.87B8.16209  
Copyright © 2005 by British Editorial Society of Bone and Joint Surgery
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Correlation of the condition of the patellar articular cartilage and patellofemoral symptoms and function in osteoarthritic patients undergoing total knee arthroplasty

I. Han, MD, Orthopaedic Surgeon, Clinical Fellow in Knee Surgery1; C. B. Chang, MD, Orthopaedic Surgeon, Clinical Fellow in Knee Surgery2; S. Lee, MD, Orthopaedic Surgeon, Associate Professor2; M. C. Lee, MD, PhD, Orthopaedic Surgeon, Assistant Professor2; S. C. Seong, MD, PhD, Orthopaedic Surgeon, Professor2; and T. K. Kim, MD, PhD, Orthopaedic Surgeon, Assistant Professor1

1 Joint Reconstruction Centre, Seoul National University Bundang Hospital, 300 Gumidong, Bundanggu, Seongnamsi, Gyunggido (463-707), Korea.
2 Department of Orthopaedic Surgery, Seoul National University Hospital, 28 Yeongon-dong, Chongno-gu, Seoul (110-744), Korea.

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

We sought to determine the degree of correlation between the condition of the patellar articular cartilage and patellofemoral symptoms and function in osteoarthritic patients undergoing total knee arthroplasty. The depth of the osteoarthritic lesion, as graded by the Outerbridge classification and its size and location were assessed to determine the condition of the patellar cartilage in 80 consecutive osteoarthritic knees undergoing total knee arthroplasty. The association between the condition of the cartilage and patellofemoral symptoms and function was investigated by correlation analysis.

The depth and size of the lesion had a significant but weak correlation with anterior knee pain (r = –0.300 and –0.289; p = 0.007 and 0.009, respectively), whereas location had no significant association (p > 0.05). None had a significant association with patellofemoral functional parameters (chair-rising, stair-climbing, and quadriceps power) (p > 0.05).

Our study indicates that patellofemoral symptoms and function are not completely determined by the condition of the cartilage. Caution should be taken when the symptoms and functional limitations are attributed to a lesion in the patellofemoral joint in making a decision regarding patellar resurfacing in total knee arthroplasty.




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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General