The study aims to determine whether CMC I arthroplasty using a Touch® implant results in higher patient satisfaction compared to RSI arthroplasty in the medium-term in patients with primary thumb osteoarthritis. Additionally, the study compares the patients' clinical and self-reported outcomes between the Touch® implant and the RSI arthroplasty. Therefore, patients with a Touch® implant in one thumb and an RSI arthroplasty in the other thumb will be recruited.
Patients suffering from osteoarthritis in the first carpometacarpal joint (CMC I OA) are often surgically treated with a resection-suspension-interposition (RSI) arthroplasty. An alternative technique is an arthroplasty with a Touch® implant. There is a growing body of evidence indicating that patients with a Touch® prosthesis recover significantly faster and return to work more quickly than patients after an RSI arthroplasty. However, there have been no studies comparing the two operations in the same patient. By recruiting patients with a Touch® implant in one thumb and an RSI arthroplasty in the other thumb, this study aims to investigate whether CMC I arthroplasty using a Touch® implant leads to higher patient satisfaction compared to RSI arthroplasty in the medium-term. Further patient-reported and clinical outcomes will be assessed to compare the two surgeries.
Study Type
OBSERVATIONAL
Enrollment
14
The Touch® prosthesis is a medical device approved in Switzerland, which is an effective surgical treatment for advanced CMC I osteoarthritis.
Schulthess Klinik
Zurich, Switzerland
Patient satisfaction wiht treatment result using 5-point Likert scale
5-point Likert scale ranging from 1 (very dissatisfied) to 5 (very satisfied)
Time frame: Follow-up at least 3 months to 12 years after surgery
Sociodemographic information
Questionnaire
Time frame: Follow-up at least 3 months to 12 years after surgery
Additional aspects of patient satisfaction with treatment
Questionnaire
Time frame: Follow-up at least 3 months to 12 years after surgery
Differences between both thumbs
Questionnaire
Time frame: Follow-up at least 3 months to 12 years after surgery
Brief Michigan Hand Outcomes Questionnaire (MHQ)
The german version of the brief MHQ will be used to assess patient-reported hand function. The score ranges from 0 to 100 with higher scores indicating better hand function.
Time frame: Follow-up at least 3 months to 12 years after surgery
Grip strength assessed with Jamar Dynamometer
Jamar Dynamometer
Time frame: Follow-up at least 3 months to 12 years after surgery
Key pinch strength assessed with pinch gauge
Pinch gauge
Time frame: Follow-up at least 3 months to 12 years after surgery
Range of motion of the humb metacarpal (MCP) and interphalangeal (IP) joint assessed with a goniometer
Used to measure flexion and extension of the thumb metacarpal (MCP) and interphalangeal (IP) joint. The evaluation of active thumb opposition is based on the Kapandji index, ranging from 1 (can touch only the lateral side of the index finger) to 10 (can reach the volar crease of the hand).
Time frame: Follow-up at least 3 months to 12 years after surgery
Pain at rest and during activities of daily living (ADL) assessed using Numeric rating scales (NRS)
NRS ranging from 0 (no pain) to 10 (worst pain)
Time frame: Follow-up at least 3 months to 12 years after surgery
Radiographs of both thumbs
To monitor the implant and to assess the scaphometacarpal distance, which can be used to identify migration of the thumb metacarpal bone, a phenomenon often observed after trapeziectomy.
Time frame: Follow-up at least 3 months to 12 years after surgery
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