Study of Wrist Fusions With the Medartis Aptus Arthrodesis Plate

Investigation of the Functional Status After Wrist Arthrodesis (Medartis Aptus Model) in Patients With Rheumatoid Arthritis Compared to Patients With Post-traumatic Wrist Destruction

The primary working hypothesis of this study is whether wrist arthrodesis leads to an improvement in functional status in both rheumatoid arthritis and 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.

Inclusion Criteria:

• Age 18-90
• Wrist fusion took place between 2014 and 2022 using Aptus 2.5 TriLock Total Wrist Fusion Plate, Medartis at Hospital Waldfriede
• rheumatoid Arthritis
• post-traumatic osteoarthritis patterns: 1. scapholunate advanced collapse (SLAC) or 2. scaphoid nonunion advanced collapse (SNAC)

Exclusion Criteria:

• post surgery bone fracture of the same limb
• Pregnancy, lactation
• active malignant tumor