Complete 180° Rotatory Dislocation in a Mobile-Bearing Knee Prothesis

Turki, Hussein W.; Trick, Lorence

doi:10.1016/j.arth.2010.05.013

Cited by 12 publications

(8 citation statements)

References 9 publications

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“…The RP TKA was designed to help decrease backside polyethylene wear and allow maximal conformity between the femoral and tibial component [1,2]. There have been multiple reports of dislocation and spinout of these implants at various time intervals after the index procedure [3][4][5][6]. Spinout of RPs is most commonly due to flexion gap asymmetry or a tight posterior cruciate ligament [2].…”

Section: Discussionmentioning

confidence: 99%

“…Currently, there are 4 case reports in the literature of knee dislocations with 180 rotation of the platform, with 3 occurring during relocation after spinout. The first report described in 2011 by Turki and Trick [4] occurred with a cruciate-retaining mobile-bearing device. The second case described in 2014 by Lee et al [3] occurred with a PS mobile-bearing device.…”

Section: Discussionmentioning

confidence: 99%

“…A spinout, or rotational dislocation of the polyethylene insert, is a rare occurrence due to external rotation or valgus/varus stress with the knee in flexion [3]. Three case reports of 180 rotatory dislocation of the polyethylene component occurred during relocation of an RP device, with only one prior case in a PSRP device [3][4][5]. Here, we describe an instance of platform rotation after patellar dislocation in a PSRP implant knee.…”

Section: Introductionmentioning

confidence: 91%

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Complete 180-Degree Dislocation of a Rotating Platform after Closed Reduction for Mobile Bearing Spinout

Sommi

Heffernan

et al. 2020

Arthroplasty Today

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Rotating-platform total knee arthroplasty was designed to help decrease backside polyethylene wear and allow maximal conformity between the femoral and tibial components, but there have been multiple reports of dislocation and spinout of these implants. There are 4 case reports in the literature of knee dislocations with 180 rotation of the platform, 3 of which occurred during relocation attempts. This is only the second case in a posterior-stabilized mobile-bearing device. We present a case of complete 180 dislocation of a rotating platform after closed reduction in a posterior-stabilized total knee arthroplasty, with subsequent conversion to hinge knee arthroplasty.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 91%

See 1 more Smart Citation

Complete 180-Degree Dislocation of a Rotating Platform after Closed Reduction for Mobile Bearing Spinout

Sommi

Heffernan

et al. 2020

Arthroplasty Today

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“…Complete 180° rotatory dislocation of the polyethylene insert is an extremely rare complication; few case reports exist describing this phenomenon [7] , [8] . Turki and Trick reported a complete 180° rotatory dislocation in a cruciate-retaining mobile-bearing prosthesis, which occurred following closed reduction of a partial rotatory subluxation of the polyethylene component [7] . Similarly, Lee et al.…”

Section: Discussionmentioning

confidence: 99%

Acute, recurrent total knee dislocation: Polyethylene dislocation and malreduction

2015

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A 62-year-old man underwent total knee arthroplasty using a mobile-bearing prosthesis. Four days post-operatively the patient experienced the first of several acute knee dislocations. Closed reduction was performed at an outside hospital a total of three times prior to presentation at this institution. A two-stage exchange of the TKA was recommended due to the clinical suspicion for an infected prosthesis. Upon surgical exploration, it was discovered that the polyethylene insert had spun out completely to 180°. Closed reduction attempts of a posterior dislocation of a mobile-bearing knee prosthesis may contribute to complete 180° spinout of the polyethylene insert.

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“…Upon literature review, it was determined that the majority of polyethylene dislocations result in an axial 90-degree subluxation. Two reports did describe a 90-degree subluxation that underwent a full 180-degree rotation upon attempt at closed reduction [3, 4]. However, this case presents a patient that underwent spontaneous 180-degree dislocation of the polyethylene component.…”

Section: Introductionmentioning

confidence: 96%

Spontaneous 180-Degree Rotatory Dislocation of Rotating-Platform Total Knee Arthroplasty

Sierra

Akalonu

West

et al. 2019

Case Reports in Orthopedics

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Rotating-bearing total knee arthroplasty has been theorized to have some advantages in the kinematics and wear characteristics of total knee arthroplasty. A rare complication of rotating-bearing total knee arthroplasty is rotary dislocation, spinout, of the polyethylene component. When these dislocations occur, they typically result in a 90-degree dislocation in respect to the axial axis of the knee. This case is unique in that it presents a complete 180-degree polyethylene dislocation without trauma.

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Complete 180° Rotatory Dislocation in a Mobile-Bearing Knee Prothesis

Cited by 12 publications

References 9 publications

Complete 180-Degree Dislocation of a Rotating Platform after Closed Reduction for Mobile Bearing Spinout

Complete 180-Degree Dislocation of a Rotating Platform after Closed Reduction for Mobile Bearing Spinout

Acute, recurrent total knee dislocation: Polyethylene dislocation and malreduction

Spontaneous 180-Degree Rotatory Dislocation of Rotating-Platform Total Knee Arthroplasty

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