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MCP Arthritis

metacarpophalangeal osteoarthris xray

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