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Patients with Tönnis grade 2 hip OA had significantly higher rate of conversion to THA
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Recently published results showed a significantly higher rate of conversion to total hip arthroplasty at 2-year follow-up among patients with Tönnis grade 2 osteoarthritis who underwent hip arthroscopy compared with matched cohorts of patients with Tönnis grade 0 or grade 1 hips.
Researchers collected data on patients who underwent hip arthroscopy between April 2008 and December 2012. Researchers matched 37 patients categorized with Tönnis grade 2 osteoarthritis (OA) with patients categorized with Tönnis grade 0 OA and Tönnis grade 1 OA according to age within 5 years, sex and BMI. Researchers recorded four patient-reported outcome scores, a VAS score for pain, patient satisfaction level and rates of revision hip arthroscopy and conversion to total hip arthroplasty (THA).
Results showed a significant improvement in patient-reported outcomes and VAS scores in all groups. Overall, 69.7% of patients in the Tönnis grade 0 group; 75.8% of patients in the Tönnis grade 1 group; and 65.4% of patients in the Tönnis grade 2 group had a good-to-excellent results. The groups had no significant differences in the mean change in patient-reported outcomes, VAS scores and patient satisfaction levels, researchers noted, as well as no significant difference in the rate of revision arthroscopy. Researchers found patients with Tönnis grade 2 hips had an odds ratio for conversion to THA of 7.73 vs. patients with Tönnis grade 0 hips and a ratio of 4.36 vs. patients with Tönnis grade 1 hips. – by Casey Tingle
Disclosures: Chandrasekaran reports no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.
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