Irreducible lateral dislocation of patella

Yerimah, George; Eisenstein, Neil; Turner, R. S.

doi:10.1136/bcr-2013-009832

Cited by 8 publications

(11 citation statements)

References 3 publications

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“…The resulting medial patellar fracture became impacted into the lateral femoral condyle requiring an open reduction. Yerimah et al [10] presented a case of a 21-year-old male who required open reduction for an irreducible lateral dislocation secondary to an osteochondral fracture of the patella. Intraoperatively, it was discovered that the rough edge of the osteochondral defect had become locked into the lateral femoral condyle, described as akin to a Hill-Sachs lesion seen in the shoulder.…”

Section: Discussionmentioning

confidence: 99%

A Rare Case of an Irreducible Patella Dislocation

Delagrammaticas

Cordes

2016

Case Reports in Medicine

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Reports of irreducible patellar dislocations are exceedingly sparse throughout the literature. Obvious radiographic or physical exam findings including fracture or inversion of the patella are often present to explain the block to reduction. Not described previously in the literature is the instance of an irreducible patella dislocation in the setting of innocuous appearing injury imaging. We present a case of a healthy thirty-two-year-old female who sustained an irreducible lateral patella dislocation while participating in a dance aerobics class. Closed means of reduction were unsuccessful, necessitating open reduction. Intraoperative findings suggest incarceration of a nondisplaced fracture and a chondral defect as the block to reduction. Following open reduction, the patient has had no further episodes of pain or instability related to the patella at one-year follow-up. Irreducible patellar dislocations are exceedingly rare injuries, where associated osseous or chondral lesions may necessitate open reduction despite innocuous appearing initial imaging. A high index of suspicion to proceed with open reduction may limit repeated attempts at closed reduction and further injury.

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Section: Discussionmentioning

confidence: 99%

A Rare Case of an Irreducible Patella Dislocation

Delagrammaticas

Cordes

2016

Case Reports in Medicine

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“…A case of irreducible patella is mostly caused by a direct medial blow with the knee in extension or slight flexion [ 1 , 4 , 6 , 9 – 11 , 13 , 14 , 16 , 22 , 25 ]. It can also occur without direct trauma [ 2 , 15 , 17 , 18 , 21 ] and in patients with previous history of patellar dislocation as described by Higgins and Khalfaoui and Devgan et al [ 5 , 12 ].…”

Section: Discussionmentioning

confidence: 99%

“…The reduction methods previously described for irreducible patella cases are either closed [ 1 , 10 , 13 , 18 , 22 ] by applying lateral pressure to the medial patellar surface while performing gentle knee hyperextension or by arthrotomy (mini-open approach) [ 2 , 4 – 7 , 9 , 11 , 12 , 14 – 17 , 21 , 25 ] as opposed to arthroscopic as in the current case.…”

Section: Discussionmentioning

confidence: 99%

Arthroscopic reduction of a locked patellar dislocation: a new less invasive technique

Teixeira

Gamba

Ophuis

et al. 2018

Knee Surg Sports Traumatol Arthrosc

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“…Irreducible lateral dislocations described in the literature were associated with vertical axis rotation, osteochondral injury to the medial aspect of the patella, or a patella hooked on the lateral femoral condyle under the prominent osteophytic ridge. 5 6 7 8 In this article we report the case of an acute irreducible lateral patellar dislocation associated with an anatomical variant of the patella.…”

Section: Introductionmentioning

confidence: 99%

“…As luxações laterais irredutíveis descritas na literatura foram associadas à rotação do eixo vertical, à lesão osteocondral no aspecto medial da patela ou à patela presa no côndilo femoral lateral sob a crista osteofítica proeminente. 5 6 7 8 No presente artigo, relatamos o caso de uma luxação patelar lateral aguda de redução impossível associada à variante anatômica da patela.…”

Section: Introductionunclassified

Dislocação patelar aguda irredutível devido a uma nova variante anatômica - a patela entalhada

Duarte-Silva¹,

Rodeia

Gomes

et al. 2019

Rev Bras Ortop

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ResumoAs luxações irredutíveis da patela são raras e são geralmente associadas a mecanismos complexos. Os autores relatam o caso clínico de uma luxação patelar lateral irredutível devido a uma variante anatômica. Os autores atenderam um paciente de 16 anos que apresentou uma luxação lateral da patela de redução impossível por manipulação fechada, mesmo sob anestesia geral. Durante o estudo de imagem, a tomografia computadorizada (TC) mostrou um entalhe na faceta medial da patela, impactada no côndilo lateral, o que impediu a redução. Esta variante anatômica foi posteriormente confirmada durante a cirurgia. Em uma TC bilateral de acompanhamento, esta variante anatômica também estava presente no joelho contralateral, normal, excluindo o remodelamento traumático como o motivo deste entalhe patelar. Os autores utilizaram uma abordagem parapatelar medial para a redução aberta do deslocamento e para o reparo do retináculo medial. De acordo com Wiberg, existem três tipos diferentes de patela. Os autores descrevem uma variação da patela de tipo III com um entalhe na margem medial que não está incluída na classificação anterior. Ressalta-se a importância de um estudo de TC na presença de luxação irredutível e o reconhecimento desta variante anatômica da patela, já que manobras agressivas foram testadas sem sucesso. A redução aberta parece ser a melhor opção neste cenário.

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Irreducible lateral dislocation of patella

Cited by 8 publications

References 3 publications

A Rare Case of an Irreducible Patella Dislocation

A Rare Case of an Irreducible Patella Dislocation

Arthroscopic reduction of a locked patellar dislocation: a new less invasive technique

Dislocação patelar aguda irredutível devido a uma nova variante anatômica - a patela entalhada

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