Difference in Success Treating Proximal Interphalangeal and Metacarpophalangeal Joints with Collagenase: Results of 208 Treatments

BACKGROUND Dupuytren disease (DD) is a fibroproliferative disorder of the palmar fasciae causing extension deficit and impaired hand function. Treatment with injection of collagenase clostridium histolyticum (CCH) is a nonsurgical treatment method. The aim of this study was to evaluate the difference in efficiency and recurrence at 12-month follow-up when treating metacarpophalangeal (MP) and proximal interphalangeal (PIP) joints with CCH. None of the patients had received previous treatments of their condition. METHODS This study is a prospective study of a consecutive series of patients with DD presenting with an extension deficit greater than 20° affecting the MP or PIP joint. RESULTS We found a mean reduction in extension deficit of 47° (91%) for MP joints and 47° (76%) for PIP joints. Full correction (max 5° deficit) was achieved in 76% of MP and 28% of PIP joints. Skin rupture was seen in 34% of treatments. The 1-year relapse rate was 15% for MP and 67% for PIP joints. The reduction in quickDASH score was only statistically significant for MP joints at 1 year. Eighty-one percent of all patients reported being satisfied or very satisfied. No major adverse events were recorded. CONCLUSION Excellent results can be achieved in the treatment of MP-joint contractures, whereas the success rate is significantly lower and recurrence rate is greater for PIP joints.