000150286 001__ 150286
000150286 005__ 20190316234831.0
000150286 0247_ $$2doi$$a10.1016/j.jse.2010.06.006
000150286 022__ $$a1058-2746
000150286 02470 $$2ISI$$a000286572400010
000150286 037__ $$aARTICLE
000150286 245__ $$aBiomechanical consequences of humeral component malpositioning after anatomical total shoulder arthroplasty
000150286 269__ $$a2010
000150286 260__ $$bElsevier$$c2010
000150286 336__ $$aJournal Articles
000150286 520__ $$aHypothesis: We hypothesized that the malpositioning of the humeral component can preclude the long-term success of anatomical total shoulder arthroplasty. The goal of this study was to evaluate the mechanical consequences of superior and inferior malpositioning of the humeral head. Materials and methods: A numerical musculoskeletal model of the shoulder joint allowing natural humeral head translation was used to simulate a loaded abduction movement controlled by muscular activation. An inferior and superior malpositioning of 5 mm were compared to an optimal positioning. Impingements, articular contact pattern, and cement stress were evaluated. Results: Inferior malpositioning of the humeral head induced impingement and limited the abduction level, while superior malpositioning increased the subluxation risk. Both inferior and superior malpositioning increased the stress level within the cement mantle. Discussion: This numerical study highlights the importance of an anatomical reconstruction of the glenohumeral surfaces for the success rate of anatomical total shoulder arthroplasty.
000150286 6531_ $$aTotal shoulder arthroplasty
000150286 6531_ $$amalpositioning
000150286 6531_ $$ahumeral head
000150286 6531_ $$amobility
000150286 6531_ $$aimpingements
000150286 6531_ $$abiomechanics
000150286 700__ $$0240310$$g106533$$aTerrier, Alexandre
000150286 700__ $$0243952$$g184913$$aRamondetti, Silvio
000150286 700__ $$0240312$$g157077$$aMerlini, Francesco
000150286 700__ $$0240508$$g103117$$aPioletti, Dominique P.
000150286 700__ $$aFarron, Alain
000150286 773__ $$j19$$tJournal of Shoulder and Elbow Surgery$$k8$$q1184-1190
000150286 8564_ $$uhttps://infoscience.epfl.ch/record/150286/files/sdarticle.pdf$$zn/a$$s525119$$yn/a
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000150286 917Z8 $$x106533
000150286 917Z8 $$x106533
000150286 917Z8 $$x103117
000150286 917Z8 $$x103117
000150286 937__ $$aEPFL-ARTICLE-150286
000150286 973__ $$rREVIEWED$$sPUBLISHED$$aEPFL
000150286 980__ $$aARTICLE