Outcomes of Hip Arthroscopy in Patients with Tönnis Grade-2 Osteoarthritis at a Mean 2-Year Follow-up: Evaluation Using a Matched-Pair Analysis with Tönnis Grade-0 and Grade-1 Cohorts

Outcomes of Hip Arthroscopy in Patients with Tönnis Grade-2 Osteoarthritis at a Mean 2-Year Follow-up: Evaluation Using a Matched-Pair Analysis with Tönnis Grade-0 and Grade-1 Cohorts

Authors

Chandrasekaran S, Darwish N, Gui C, Lodhia P, Suarez-Ahedo C, Domb BG
DOI: 10.2106/JBJS.15.00644

Purpose

To evaluate outcomes of hip arthroscopy in patients with Tönnis grade-2 osteoarthritis compared to those with grade-0 and grade-1 osteoarthritis.

Methods

Matched-pair analysis of 37 patients per group, assessing patient-reported outcomes, pain scores, satisfaction, revision rates, and conversion to total hip arthroplasty at a mean 2-year follow-up.

Key Findings

All groups improved significantly, but Tönnis grade-2 patients had a higher rate of conversion to total hip arthroplasty. No difference was seen in revision arthroscopy rates or patient satisfaction.

Conclusions

Hip arthroscopy has limited effectiveness as a joint preservation procedure in patients with Tönnis grade-2 osteoarthritis due to higher arthroplasty conversion rates.

What this means for patients

Patients with moderate osteoarthritis (Tönnis grade-2) have a higher chance of needing hip replacement after arthroscopy, so surgical expectations should be carefully managed.