Overview
The primary working hypothesis of this study is whether KeriFlex® metacarpophalangeal joint prostheses provide an equivalent result to Swanson finger joint implants in patients with rheumatoid arthritis or post-traumatic osteoarthritis. Functional status will be measured by Disabilities of the Arm, Shoulder and Hand (DASH) questionnaire no earlier than 1 year after surgery.
Eligibility
Inclusion Criteria:
- Age 18-90
- Metacarpophalangeal Joint Prostheses between 2014 and 2022 using Swanson or KeriFlex
implant system at Hospital Waldfriede
- rheumatoid Arthritis or post-traumatic osteoarthritis of Metacarpophalangeal joint
Exclusion Criteria:
- post surgery bone fracture of the same limb
- Pregnancy, lactation
- active malignant tumor
