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American Journal of Medical Sciences and Medicine. 2016, 4(2), 23-25
DOI: 10.12691/ajmsm-4-2-1
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Polyethylene Bearing Stress Fractures after Mobile-bearing Cruciate-retaining Total Knee Arthroplasty: Case Reports

Eshnazarov Kamolhuja Eshnazarovich1 and Jong Keun Seon2,

1Department of Orthopedic Surgery, Shinchon Yonsei Hospital, Korea

2Department of Orthopedic Surgery, Chonnam National University Hospital, Korea

Pub. Date: March 31, 2016

Cite this paper:
Eshnazarov Kamolhuja Eshnazarovich and Jong Keun Seon. Polyethylene Bearing Stress Fractures after Mobile-bearing Cruciate-retaining Total Knee Arthroplasty: Case Reports. American Journal of Medical Sciences and Medicine. 2016; 4(2):23-25. doi: 10.12691/ajmsm-4-2-1


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.

TKA Mobile-bearing polyethylene stress fracture

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[1]  Bert JM (1996) Delayed failure of meniscal bearing elements in total knee arthroplasty. J Arthroplasty 11(5):611-611.
[2]  Bert JM (1990) Dislocation/subluxation of meniscal bearing elements after New Jersey low contact stress total knee arthroplasty. Clin Orthop Relat Res 254:211-211.
[3]  Buchel FF, Pappas MJ (1990) Long-term survivorship analysis of cruciate-sparing versus cruciate-sacrificing knee prostheses using meniscal bearings. Clin Orthop Relat Res 260:162-169.
[4]  Chang CW, Lai KA, Yang CY et al (2011) Early mechanical complications of a multidirectional mobile-bearing total knee replacement. J Bone Joint Surg Br 93(4):479-483.
[5]  Hwang BH, Lee WS, Park KK et al (2011) Anterior-posterior glide mobile-bearing total knee arthroplasty complications related to prosthesis design. J Arthroplasty 26(8):1438-1444.
[6]  Jahng J, Kim HK, Sohn JM et al (2001) Dislocation of mobile meniscal-bearing element by massive joint effusion-a case report. Acta Orthop Scand 72(2):192-194.
[7]  Kobayashi H, Akamatsu Y, Taki N et al (2011) Spontaneous dislocation of a mobile-bearing polyethylene insert after posterior-stabilized rotating platform total knee arthroplasty: A case report. Knee 18:496-498.
[8]  Ridgeway S, Moskal JT (2004) Early instability with mobile-bearing total knee arthroplasty. A Series of 25 cases. J Arthroplasty 19(6):686-693.
[9]  Sa´nchez-Sotelo J, Ordonez JM, Prats SB (1999) Results and complications of the low contact stress knee prosthesis. J Arthroplasty 14(7):815-821.
[10]  Turki H W, Trick L (2011) Complete 180° rotatory dislocation in a mobile-bearing knee prosthesis. J Arthroplasty 26(4): 666. e1-e3.
[11]  Weaver JK, Derkash RS, Greenwald AS (1993) Difficulties with bearing dislocation and breakage using a movable bearing total knee replacement system. Clin Orthop Relat Res 290:244-252.