Allograft Meniscal Arthroplasty for the Treatment of Basal Joint Arthritis of the Thumb

Study Overview
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Brief Summary
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Hypothesis: The use of knee meniscal allograft as a joint spacer and stabilizer is a viable option for the surgical treatment of basal joint arthritis of the thumb. A variety of surgical procedures have been developed for the treatment of basal joint osteoarthritis of the thumb. Problems with persistent pain and poor function have been reported to some degree for each of these procedures. Using the concept of an implant acting as a spacer and stabilizer the investigators proposed and implemented a novel surgical technique using allograft knee meniscus as a biologic implant for the treatment of basal joint arthritis of the thumb.

Detailed Description
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Hypothesis: The use of knee meniscal allograft as a joint spacer and stabilizer is a viable option for the surgical treatment of basal joint arthritis of the thumb. Introduction: A variety of surgical procedures have been developed for the treatment of basal joint osteoarthritis of the thumb. Problems with persistent pain and poor function have been reported to some degree for each of these procedures. Promising results were originally reported (2004) for the Artelon carpometacarpal (CMC) implant (Small Bone Innovations, Morrisville, PA) procedure which utilized the concept of a spacer and stabilizer of the CMC joint . Recent studies however, have demonstrated problems due to a foreign body reaction with the Artelon implant requiring revision surgery. Using the concept of an implant acting as a spacer and stabilizer we proposed and implemented the use of allograft knee meniscus as a biologic implant in the treatment of basal joint arthritis of the thumb Methods: A prospective study was performed on four thumbs using an allograft knee meniscus transplanted into the thumb CMC joint using the surgical technique described for that of the Artelon implant (Small Bone Innovations, Morrisville, PA). Data collected included: pain level, grip strength, tip, key and pinch strength, carpometacarpal, metacarpophalangeal, interphalangeal, and oppositional range of motion, as well as Disabilities of the Arm, Shoulder, and Hand (DASH) scores. Interval radiographic analysis is to be performed. Endpoints for data collection will be at three months, six months, one, two, three, four, and five years follow up.

Official Title
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Allograft Meniscal Arthroplasty for the Treatment of Basal Joint Arthritis of the Thumb

Conditions
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Arthritis

Intervention / Treatment
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* Procedure: Meniscal allograft arthroplasty of the carpometacarpal joint of the thumb


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Stage I - III osteoarthritis / traumatic arthritis of the thumb. Exclusion Criteria: Exclusion criteria were diabetes mellitus, kidney insufficiency, OA in the STT joint, or malignancy within the past 10 years.

Ages Eligible for Study
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Minimum Age: 25 Years
Maximum Age: 95 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 |
| --- | --- |
| Osteoarthritis of the carpometacarpal joint of the thumb<br>The group of patients enrolled in this study all have the diagnosis of carpometacarpal arthritis of the thumb. The patients did not respond favorably to non-operative management including oral anti-inflammatory medications, corticosteroid injections, and thumb splinting. Operative management was therefore recommended using the technique of meniscal allograft arthroplasty. | Procedure: Meniscal allograft arthroplasty of the carpometacarpal joint of the thumb<br>* The surgical procedure will involve the use of human meniscal allograft tissue that will be provided by industry. The meniscus will be contoured into a T shape. The T-shaped meniscus allograft is then inserted into the arthritic thumb CMC joint and secured with two suture anchors.<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 (DASH) Score | The DASH Outcome Measure is a 30-item, self-report questionnaire designed to measure physical function and symptoms in people with any of several musculoskeletal disorders of the upper limb. The tool gives clinicians and researchers the advantage of having a single, reliable instrument that can be used to assess any or all joints in the upper extremity. | 5 years | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Allograft, Arthroplasty, Basal Joint, carpometacarpal joint, Thumb, meniscus, osteoarthritis, Patients with Stages I - III arthritis of the the thumb carpometacarpal joint