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synonyms: thumb metacarpophalangeal joint arthritis
MCP Arthritis ICD-10
- M19.041 Primary osteoarthritis, right hand
- M19.042 Primary osteoarthritis, left hand
- M19.049 Primary osteoarthritis, unspecified hand
MCP Arthritis ICD-9
MCP Arthritis Etiology / Epidemiology / Natural History
- Etiology: osteoarthritis, posttraumatic arthritis, rheumatoid arthritis
MCP Arthritis Anatomy
MCP Arthritis Clinical Evaluation
- Pain and loss of motion in MCP joint of affected digit. RA patients often have gross deformity / subluxation
MCP Arthritis Xray / Diagnositc Tests
- P/A, lateral and oblique views of affected finger / thumb demonstrate varying degrees of Joint space narrowing, sclerosis, osteophytosis
MCP Arthritis Classification / Treatment
- Fingers-rheumatoid arthritis
Treatment ; constrained hinged silicone arthroplasty. Consider unconstrained metalplastic or pyrolytic carbon arthroplasty depending on ligament/soft-tissue stability.
- Fingers-osteo/posttraumatic arthritis
Treatment = unconstrained metalplastic or pyrolytic carbon arthroplasty
- Thumb
Treatment = MCP arthrodesis: Optimal position = 0°-15° flexion.
MCP Arthritis Associated Injuries / Differential Diagnosis
- PIP arthritis
- DIP Arthritis
- Basilar joint arthritis
- Gamekeepers thumb
- Rolando fracture
MCP Arthritis Complications
- Implant fracture
- Infection
- Pain
- Instabitlity
- CRPS
MCP Arthritis Follow-up Care
- Average annual failure rate=2.1%; sixteen-year survival rate = 70.3% for pyrolytic carbon arthroplasty.(Cook, SK, JBJS 1999;81A:635).
MCP Arthritis Review References
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