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· DOS Abstracts
Preoperative Patient Reported Outcome Measures in
the Prediction of Outcome in Arthroplasty of the Basal
Joint of the Thumb
Rasmus Wejnold Jørgensen, Jens-Christian Vedel, Anders Odgaard, Claus Hjorth
Jensen
Hand Clinic, Department of Orthopedics, Herlev-Gentofte University Hospital
of Copenhagen
Background:
Indication for thumb carpometacarpal joint (CMC-1) arthroplas-
ty is clinical and radiographic osteoarthritis of the joint resistant to conservative
treatment.
Purpose / Aim of Study:
The purpose of this study was to evaluate Patient
Reported Outcome Measures as a predictor of outcome.
Materials and Methods:
157 consecutive patients prospectively answered
Quick-DASH questionnaire preoperatively and at 6 months following interpo-
sition arthroplasty of the basal joint of the thumb. Student T-test was used
comparing pre- and postoperative values. The questionnaires ability to predict
outcome was assessed using multiple regression analysis. P<0.05 was consid-
ered statistically significant.
Findings / Results:
The mean preoperative Quick-DASH was 46.41 (SD
15.64). The mean postoperative Quick-DASH was 22.89 (SD 19.40). Show-
ing an average improvement of 23.52 (SD 24.93), P < 0.0001. The mean im-
provement in Quick-DASH values for patients who were satisfied (n=122) or
unsatisfied (n=35) was 28.89 (SD21.71) and 4.81 (SD 26.67), respectively, P
= 0.00012. The multiple regression analysis showed a correlation between the
preoperative Quick- DASH and the improvement in Quick- DASH, P < 0.0001.
I.e. a higher preoperative score resulted in greater improvement. Age and gen-
der did not correlate with the postoperative values P = 0.127 and 0.377, re-
spectively. A preoperative Quick-DASH score of less than 30 resulted in im-
provement at follow-up in only 54 % of patients.
Conclusions:
CMC-1 arthroplasty is an effective treatment of thumb CMC os-
teoarthritis. There is a strong correlation between the preoperative Quick DASH
and the improvement in Quick- DASH at 6 months follow-up. Quick-DASH
score may therefore assist in the decision making in the operative treatment of
osteoarthritis of the basal joint of the thumb.
No conflicts of interest reported
66.