DOS 2018

114 · DOS Abstracts Fixation of the 1st metacarp with semiflexible fiber wire after trapeziectomy: a pilotstudy Anne Skinnerup, Hanne Jacobsen, Tove Møl Christensen, Steen Olesen, Marianne Vestermark Ortopædkirurgisk afdeling, Regionshospitalet VIborg, HEM; Fysio- og ergotera- pi, ortopædkirurgisk afdeling, Regionshospitalet VIborg, HEM Background: Trapeziectomy is a common treatment for arthrosis of the carpo- metacarpal joint of the thumb. This can lead to instability and reduced strength of the thumb. The minimal invasive procedure of suture-button suspension- plasty (SBS) may address the issue of instability after trapeziectomy. Purpose / Aim of Study: To evaluate patient satisfaction and functional out- come of trapeziectomy combined with SBS in a prospective cohort-study. Materials and Methods: 13 patients with arthrosis of the carpometacar- pal joint of the thumb were included. All underwent trapeziectomy and SBS, where a semi-flexible buttoned fiber-wire was inserted between the basis of the 1st and 2nd metacarpal. Clinical outcome was evaluated by PROM (quick- DASH questionnaire) and two functional tests: Strength (kg) of key grip and tip-tip grip. The data was collected preoperatively and at follow-up at 6 and 12 months. The unaffected thumb and the preoperative data served as control. Findings / Results: Preoperatively, we found significantly lower strength in the affected thumb. Strength did increase, but not statistically significant, after 6 or 12 months. On the other hand, patient satisfaction was increased with a quick-DASH reduction of 18,67 points after 6 months and 15,34 points after 12 months. Conclusions: The procedure significantly improved patient satisfaction. This study suggests a possibly clinically relevant improvement in thumb-strength. It is, however, not statistically significant, possibly due to a high variation of data and a small number of included patients. This results warrants a full size study and the inclusion of patients and collection of data is ongoing. 55.