Pyrocarbon interposition arthroplasty
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First carpometacarpal arthroplasty using the PyroDiskTM implant. Implant migration noted with approximately one-half first metacarpal base displacement. Thin 1 mm periprosthetic lucency.
Pyrocarbon interposition (PyroDiskTM) arthroplasty is a non-superior alternative to trapeziectomy for first carpometacarpal osteoarthritis.
These implants have a 0.5 mm pyrolytic carbon coating and a 0.5 mm periprosthetic lucency is a normal radiological finding.
Macroscopic displacement is quantified as a displacement of more than one-fourth of the first metacarpal base.
Disclosure: I, Henry Knipe, have no actual or potential ethical or financial conflict of interest in relation to this device. This case is not intended to be a personal endorsement or recommendation of this product.