December 28, 2017
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BMI did not affect clinical outcomes after arthroscopic partial meniscectomy

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Despite the presence of worse pain, physical function and quality of life scores and decreased flexion among obese patients prior to arthroscopic partial meniscectomy, results showed no statistically significant differences in clinical outcomes between normal-weight and obese patients at 1-year follow-up.

In a secondary analysis of the Chondral Lesions and Meniscal Procedures Randomized Trial, Leslie J. Bisson, MD, and colleagues assessed VAS for pain, WOMAC, KOOS, range of motion and presence of effusion preoperatively and at 1-year postoperatively among 258 patients who underwent arthroscopic partial meniscectomy. Researchers categorized patients according to BMI as normal weight (n=50), overweight (n=100) or obese (n=106).

Results showed worse WOMAC pain, WOMAC physical function, pain VAS, KOOS pain and KOOS quality-of-life scores, as well as decreased flexion among patients who were obese prior to arthroscopic partial meniscectomy. Prior to surgery, researchers noted a higher chance of patients who were overweight and obese undergoing knee effusion vs. patients who were normal-weight. Flexion decreased in patients who were overweight and obese at 1 year after surgery, according to results, while no statistically significant difference of the clinical and functional measures for normal-weight, overweight and obese patients was found between preoperative and 1-year scores.

“Past studies have found increased BMI to be associated with worse outcomes following arthroscopic meniscal surgery, but these studies may have been confounded by the facts that higher BMI is associated with chondral lesions and that chondral lesions are associated with poorer outcomes after arthroscopy,” Bisson told Healio.com/Orthopedics. “Secondary analysis of data from the Chondral Lesions and Meniscal Procedures (CHAMP) Randomized Trial, which excluded subjects with radiographic evidence of knee [degenerative joint disease] DJD, found that overweight and obese patients had similar outcomes to those with normal BMI after arthroscopic meniscectomy.” – by Casey Tingle

 

Disclosures: Bisson reports funding from the Ralph C. Wilson Jr. Foundation. Please see the full study for a list of all other authors’ relevant financial disclosures.