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Review
. 2023 Nov;109(7):103659.
doi: 10.1016/j.otsr.2023.103659. Epub 2023 Jul 13.

Diagnosis and management of METS-Stanmore Morse taper failure

Grégoire Rougereau  1 , François Gouin  2 , Jean-Camille Mattei  3 , Sébastien Raux  4 , Alexandre Hardy  5 , David Biau  6
Affiliations
Free article
Review

Diagnosis and management of METS-Stanmore Morse taper failure

Grégoire Rougereau et al. Orthop Traumatol Surg Res. 2023 Nov.
Free article

Abstract

We describe clinical semiology in 6 cases of METS-Stanmore distal femoral Morse taper impaction failure: from obvious forms with intraprosthetic dislocation to chronic forms with less obvious symptoms: instability, piston sensation, rotational disorder in gait. The diagnostic procedure in chronic forms is described, notably with dynamic examination under fluoroscopy. Reduction and re-impaction by external maneuver can be attempted; in case of failure or of any suspicion of taper disassembly, the 2 modular implant components have to be replaced. Finally, we provide a review of the literature on this rare but serious complication. LEVEL OF EVIDENCE: IV.

Keywords: Knee reconstruction; Megaprosthesis; Modular knee prosthesis; Morse taper disassembly.

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