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Patient-specific hip geometry has greater effect on THA wear than femoral head size

M. Daniel, B. Rijavec, D. Dolinar, D. Pokorný, A. Iglič, V. Kralj-Iglič,

. 2016 ; 49 (16) : 3996-4001. [pub] 20161029

Jazyk angličtina Země Spojené státy americké

Typ dokumentu časopisecké články, práce podpořená grantem

Perzistentní odkaz   https://www.medvik.cz/link/bmc18016917

Grantová podpora
NV15-31269A MZ0 CEP - Centrální evidence projektů

Digitální knihovna NLK
Plný text - Článek

E-zdroje Online Plný text

NLK ProQuest Central od 2003-01-01 do Před 2 měsíci
Health & Medicine (ProQuest) od 2003-01-01 do Před 2 měsíci

Odkazy

PubMed 27842781
DOI 10.1016/j.jbiomech.2016.10.030
Knihovny.cz E-zdroje

In vivo linear penetration in total hip arthroplasty (THA) exhibits similar values for 28mm and 32mm femoral head diameter with considerable variations between and within the studies. It indicates factors other than femoral head diameter influence polyethylene wear. This study is intended to test the effect of patient׳s individual geometry of musculoskeletal system, acetabular cup orientation, and radius of femoral head on wear. Variation in patient׳s musculoskeletal geometry and acetabular cup placement is evaluated in two groups of patients implanted with 28mm and 32mm THA heads. Linear wear rate estimated by mathematical model is 0.165-0.185mm/year and 0.157-0.205mm/year for 28 and 32mm THA heads, respectively. Simulations show little influence femoral head size has on the estimated annual wear rate. Predicted annual linear wear depends mostly on the abduction angle of the acetabular cup and individual geometry of the musculoskeletal system of the hip, with the latter having the greatest affect on variation in linear wear rate.

Citace poskytuje Crossref.org

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