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International Journal of
Radiology Research
ARCHIVES
VOL. 8, ISSUE 2 (2026)
Prevalence and severity of chondromalacia patella on MRI Knee: A retrospective analysis
Authors
Dr. Annamaneni Chandrahas, Dr. Akshay M R, Dr. Sneha Tapashetti
Abstract

Background: Chondromalacia patella (CMP) is a frequent cause of anterior knee pain and may progress to patellofemoral osteoarthritis if undetected. MRI is the imaging modality of choice for non-invasive assessment of patellar cartilage, providing detailed grading and evaluation of associated anatomical risk factors.

Objective: To determine the prevalence and severity of CMP on knee MRI and assess the relationship between cartilage damage and patellofemoral anatomical parameters.

Materials and Methods: A retrospective review was conducted on knee MRI studies performed at a tertiary care center in last 18 months. Patients aged 15 – 75 years with adequate image quality were included; cases with prior patellar surgery or fracture were excluded. Patellar cartilage was graded using the MRI-adapted Outerbridge classification (Grades 0–4). Trochlear dysplasia (Dejour classification), patellar tilt, TT–TG distance, and presence of joint effusion were recorded. Statistical analysis included descriptive statistics, χ² tests for categorical variables, and logistic regression to identify predictors of high-grade CMP (Grade ≥3).

Conclusion: CMP is highly prevalent on knee MRI, with a notable proportion demonstrating severe cartilage damage. MRI assessment of patellar cartilage and associated anatomical risk factors can guide early diagnosis, clinical management, and preventive strategies for anterior knee pain.
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Pages:41-44
How to cite this article:
Dr. Annamaneni Chandrahas, Dr. Akshay M R, Dr. Sneha Tapashetti "Prevalence and severity of chondromalacia patella on MRI Knee: A retrospective analysis". International Journal of Radiology Research, Vol 8, Issue 2, 2026, Pages 41-44
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