Obturator dislocation of total hip arthroplasty with disassembly of the prosthesis components and periprosthetic fracture in morbid obese patient

INTRODUCTIONAnterior dislocation is a rare complication of total hip arthroplasty (THA). There exist only three cases in the literature. None of them report disassembly of the prosthesis components. We present a morbidly obese woman who suffered an irreducible obturator dislocation of an infected to...

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Published inActa ortopédica mexicana Vol. 34; no. 1; pp. 47 - 52
Main Authors Abarquero-Diezhandino, A, Toro-Ibarguen, A N, Moreno-Beamud, J A, Ojeda-Thies, C, Delgado-Diaz, E
Format Journal Article
LanguageEnglish
Portuguese
Published Colegio Mexicano de Ortopedia y Traumatología A.C 01.02.2020
Subjects
Medicine, Research & Experimental
Orthopedics
componentes
components
complication
fractura
cadera
obesidad
hip
obesity
Luxación
Dislocation
fracture
complicación
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Summary:INTRODUCTIONAnterior dislocation is a rare complication of total hip arthroplasty (THA). There exist only three cases in the literature. None of them report disassembly of the prosthesis components. We present a morbidly obese woman who suffered an irreducible obturator dislocation of an infected total hip arthroplasty (THA), due to uncontrolled adduction during an early debridement surgery. Following unsuccessful closed reduction attempts, a Vancouver B2 periprosthetic fracture and disassembly of the prosthetic components were observed. Two-stage revision THA was necessary to resolve the infection and restore hip functionality. In obturator dislocation, the femoral head prosthetic can be trapped in the obturator foramen, and this may disassemble the prosthesis components during reduction maneuvers; theres also risk of periprosthetic fracture. This mandate an open reduction of the joint. Patient obesity could be a determining factor for this rare type of hip arthroplasty dislocation. Obturator dislocation is an extremely rare complication of the total hip arthroplasty, whose reductions should be handled with caution given the risks of periprosthetic fractures. In most cases, an open reduction of the joint is required. CLINICAL IMPORTANCEOur work is likely to be of great interest because it offers tips for the management of this rare complication based on our experience.
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ISSN:2306-4102