Polyethylene Bearing Stress Fractures after Mobile-bearing Cruciate-retaining Total Knee Arthroplasty: Case Reports
نویسنده
چکیده
Some reported bearing fractures are due to entrapment of the bearing between the femoral component and posterior edge of the tibial base plate in unstable meniscal –bearing design TKA. However, so far no cases of bearing fracture has been reported for the rotating platform or anteroposterior gliding designs of mobile bearing TKA. The authors describe two cases of polyethylene stress fracture after primary TKA using a cruciate-retaining floating platform mobile-bearing prosthesis (e.motion-FP, B.Braun-Aesculap, Tuttlingen, Germany), and includes a review of the pertinent literature and a discussion of possible fracture mechanisms.
منابع مشابه
Traumatic Dislodgement of Tibial Polyethylene Insert after a High-Flex Posterior-Stabilized Total Knee Replacement
Many pathologic entities can produce a painful total knee replacement (TKR) that may lead to potential prosthetic failure. Polyethylene insert dissociation from the tibial baseplate has been described most frequently after mobile-bearing and cruciate-retaining TKRs. However, only 3 tibial insert dislocations in primary fixed-bearing High-Flex posterior-stabilized TKRs have been reported. We pre...
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