Metacarpophalangeal Joint Prostheses in Hand Surgery.

Study Overview
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Brief Summary
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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.

Official Title
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Metacarpophalangeal Joint Prostheses in Hand Surgery. A Retrospective Investigation on Functional Outcome After Intervention.

Conditions
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Osteoarthritis Metacarpophalangeal Joint, Rheumatoid Arthritis Metacarpophalangeal Joint

Intervention / Treatment
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* Procedure: Metacarpophalangeal joint prostheses
* Procedure: Metacarpophalangeal joint prostheses


Participation Criteria
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Eligibility Criteria
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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

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 90 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Rheumatoid Arthritis finger joint destruction<br>Patients with rheumatoid arthritis who received a metacarpophalangeal joint prostheses system after 01.01.2014 | Procedure: Metacarpophalangeal joint prostheses<br>* Observation after implantation of metacarpophalangeal joint prostheses using KeriFlex® or Swanson finger joint implants<br>|
| Osteoarthritis finger joint destruction<br>Patients with post-traumatic wrist osteoarthritis who received a metacarpophalangeal joint prostheses system after 01.01.2014 | Procedure: Metacarpophalangeal joint prostheses<br>* Observation after implantation of metacarpophalangeal joint prostheses using KeriFlex® or Swanson finger joint implants<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Disabilities of the Arm, Shoulder and Hand questionnaire (DASH) | Disabilities as measured by the DASH scale; No Difficulty (1), Mild Difficulty (2), Moderate Difficulty (3), Severe Difficulty (4), Unable (5) | All patients who underwent surgery between 2014 to 2023 | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Functional assessment: Goniometry | ROM of each joint of the hand with a goniometer | All patients who underwent surgery between 2014 to 2023 | 
| Short-Form 36 (SF-36) | Scored review of health questionnaire SF36: minimum value = 0 ; maximum value = 100 | All patients who underwent surgery between 2014 to 2023 | 
| Ultrasound Assessment | Patients will undergo an ultrasound scan to assess the severity of their rheumatoid arthritis. | All patients who underwent surgery between 2014 to 2023 | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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metacarpophalangeal joint arthroplasty, KeriFlex® finger joint prostheses, metacarpophalangeal joint prostheses, Swanson flexible finger joint implant, finger joint replacement, Osteoarthritis, Rheumatoid Arthritis