5-Year Outcomes for the Treatment of Hallux Rigidus (2015)
Summary: Rheumatoid osteoarthritis can cause severe destructions of the metatarsophalangeal (MTP) joints. The treatment by surgical replacement with joint prostheses manufactured from flexible silicone or other materials lack good long term results. Arthrodesis is not in favour by the patients. Resection arthroplasty (RIAP) is mainly performed, but weakens the function. These problems of the current treatments caused researchers to look for new solutions.
Aim of this prospective randomised study is to see if the bioreplaceable scaffold spacer “RegJoint implant” (Scaffdex, Finnland) will show as good or better results than other treatments (RIAP, cheilectomy or arthrodesis) respective pain, function and the AOFAS score.
Within 5 years of observation, a total number of 44 volunteers were included in the analysis. 27 subjects received the new implant and 17 patients an alternative surgical method (cheilectomy, resection arthroplasty or arthrodesis).
Overall, the results showed a significant advantage of the implant compared to the control group after 5 years surveillance in respect to pain, functionality and the AOFAS score (p < 0.001). For the follow-up period of 1 year postoperatively this was not detectable. 2 patients died during the period of follow-up. 6 patients were lost to follow-up. Overall, there were no postoperative surgery-related complications.
Full reference, link to publication below: Hassel K., Mai S., & Mai B. Five years results with a new bioreplaceable implant for MTP joints. A prospective randomized study. OUP 2015; 9: 442–447. DOI: 10.3238/oup.2015.0442–0447