2015 ISAKOS Biennial Congress ePoster #819

Chondromalacia Severity Index: A Novel Measure in the Prearthritic Hip

Elizabeth A. Howse, MD, Long Island City, NY UNITED STATES
Leon Lenchik, MD, Winston-Salem, NC UNITED STATES
Scott D. Wuertzer, MD, Winston-Salem, NC UNITED STATES
Laura Raffield, BS, Winston-Salem, NC UNITED STATES
David C. Holst, MD, Winston Salem, NC UNITED STATES
Allston Stubbs, MD, MBA, Winston Salem, NC UNITED STATES

Wake Forest University School of Medicine, Winston-Salem, NC, USA

FDA Status Not Applicable

Summary: Chondromalacia Severity Index (CSI) is useful measure of articular cartilage loss at hip arthroscopy.

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Abstract:

Purpose

To determine the utility of Chondromalacia Severity Index (CSI) at hip arthroscopy by evaluating the association between patient age and CSI at the femoral head and the acetabulum.

Methods

Operative reports and medical records of 508 patients, age 16-50,who had first time hip arthroscopy performed by a single orthopedic surgeon were reviewed. Femoral head CSI was calculated by multiplying the Outerbridge grade of chondromalacia of the femoral head by affected area. Acetabular CSI was calculated by multiplying the Outerbridge grade of chondromalacia in the acetabulum by affected area. In men and women, Spearman correlations between patient age and CSI were determined. Adjustment for body mass index (BMI) was performed.

Results

303 women (mean age 32.03 years, mean BMI 24.72) and 139 men (mean age 32.46 years, mean BMI 27.14) were included in the study. In women, there was positive correlation between patient age and femoral head CSI (r=0.43; p<0.0001) as well as patient age and acetabular CSI (r=0.42; p<0.0001). In men, there was positive correlation between patient age and femoral head CSI (r=0.26; p=0.002) as well as patient age and acetabular CSI (r=0.37; p<0.0001). After adjusting for BMI, the positive correlations remained significant in both genders.

Conclusion

Chondromalacia Severity Index (CSI) is useful measure of articular cartilage loss at hip arthroscopy. Femoral head and acetabular CSI are positively correlated with age in both genders in patients age 50 and younger.