Spontaneous dislocation of a mobile-bearing polyethylene insert after posterior-stabilized rotating platform total knee arthroplasty: A case report

Kobayashi, Hideo; Akamatsu, Yasushi; Taki, Naoya; Ota, Hiroyoshi; Mitsugi, Naoto; Saito, T.

doi:10.1016/j.knee.2010.10.007

Cited by 18 publications

(20 citation statements)

References 18 publications

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“…Polyethylene insert dissociation from the tibial baseplate has been described most frequently after mobile-bearing and cruciate-retaining (CR) TKRs [ 7 , 8 ]. As stated by Thompson et al, the incidence of this event in mobile-bearing prosthesis oscillates between 0.4% and 9.3% [ 9 ].…”

Section: Discussionmentioning

confidence: 99%

Traumatic Dislodgement of Tibial Polyethylene Insert after a High-Flex Posterior-Stabilized Total Knee Replacement

Bonorino

Slullitel

Kido

et al. 2015

Case Reports in Orthopedics

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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 present a new case of tibial insert dislocation in a High-Flex model that shares similarities and differences with the cases reported, facilitating the analysis of the potential causes, which still remain undefined.

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Section: Discussionmentioning

confidence: 99%

Traumatic Dislodgement of Tibial Polyethylene Insert after a High-Flex Posterior-Stabilized Total Knee Replacement

Bonorino

Slullitel

Kido

et al. 2015

Case Reports in Orthopedics

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“…Assim como causas relacionadas ao design dos implantes, entre elas a existência de base tibial rasa ou do trilho de encaixe do polietileno excessivamente fino. [4][5][6][7][8] Em relação ao tratamento, a literatura recomenda a cirurgia nos casos suspeitos. Existem relatos de bons resultados com apenas a troca do polietileno.…”

Section: Discussionunclassified

“…4 Portanto, durante a cirurgia de revisão, nos casos em que houver movimento entre a base tibial preexistente e novo polietileno, estará indicada a revisão do componente tibial também. 4,5,7,8 …”

Section: Discussionunclassified

Luxação espontânea do polietileno após artroplastia de revisão de joelho: relato de caso

Migon

Freitas

Rodrigues

et al. 2015

Revista Brasileira de Ortopedia

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“…Dislocation of the polyethylene insert after Scorpio mobile-bearing TKA has been described previously [15]. In general, malpositioned components, flexion-extension gap mismatch, and laxity of soft tissue tension between the femoral and tibial surfaces can cause dislocation of a mobile bearing polyethylene insert [16,17].…”

Section: Discussionmentioning

confidence: 99%

“…In our case, the tension and alignment was considered to be adequate. Our case and duplicated saw bone model demonstrated that failure of the locking system resulted in the dislocation of the insert [15]. Dislocation of polyethylene insert is rare and it can easily be overlooked at the early stage [18,19].…”

Section: Discussionmentioning

confidence: 99%

Mid- term results of stryker® scorpio plus mobile bearing total knee arthroplasty

Kobayashi

Mitsugi

Mochida

et al. 2012

BMC Sports Sci Med Rehabil

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BackgroundThe mobile bearing knee system was introduced to lessen contact stress on the articular bearing surface and reduce polyethylene wear. The purpose of the current study was to investigate the mid-term results of patients undergoing total knee arthroplasties (TKAs) using Scorpio Plus Mobile Bearing Knee System (Stryker, Mahwah, NJ), and compare the outcomes between patients with osteoarthritis and osteonecrosis (OA·ON group) and patients with rheumatoid arthritis (RA group).MethodsEight males and 58 females were followed up for a period of 4.4- 7.6 years from June 1, 2003 to December 31, 2005. There were 53 knees with osteoarthritis, 17 knees with rheumatoid arthritis, and 6 knees with osteonecrosis. Clinical and radiographic follow- up was done using The Japanese Orthopedic Association knee rating score (JOA score) and Knee Society Total Knee Arthroplasty Roentgenographic Evaluation and Scoring System.ResultsWith regard to the JOA score, there was significant improvement in both groups. The postoperative range of motion was between 0.8°and 116.8° in OA·ON group, and between 0.0° and 113.7° in RA group. There were no significant differences with the radiographic evaluation between two groups. Spontaneous dislocation of a polyethylene insert occurred in one patient, and deep infection was occurred in one patient.ConclusionThere was significant improvement with regard to the clinical and radiographic results of patients undergoing TKAs using the model. The risk of polyethylene insert dislocation related to the mobile bearing TKA is a cause for concern.

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Spontaneous dislocation of a mobile-bearing polyethylene insert after posterior-stabilized rotating platform total knee arthroplasty: A case report

Cited by 18 publications

References 18 publications

Traumatic Dislodgement of Tibial Polyethylene Insert after a High-Flex Posterior-Stabilized Total Knee Replacement

Traumatic Dislodgement of Tibial Polyethylene Insert after a High-Flex Posterior-Stabilized Total Knee Replacement

Luxação espontânea do polietileno após artroplastia de revisão de joelho: relato de caso

Mid- term results of stryker® scorpio plus mobile bearing total knee arthroplasty

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