Joint contact stress improves in dysplastic hips after periacetabular osteotomy but remains higher than in normal hips

Autor:	Holly D. Thomas-Aitken, Jessica E. Goetz, Robert W. Westermann, Michael C. Willey, Sean E Sitton
Rok vydání:	2021
Předmět:	Orthodontics Hip dysplasia Periacetabular osteotomy business.industry Surgical correction medicine.disease Joint contact Asymptomatic Article Stress (mechanics) Contact mechanics Medicine Orthopedics and Sports Medicine Surgery medicine.symptom business
Zdroj:	Hip Int
ISSN:	1724-6067 1120-7000
DOI:	10.1177/11207000211036414
Popis:	Aim: The purpose of this study was to use computational modeling to determine if surgical correction of hip dysplasia restores hip contact mechanics to those of asymptomatic, radiographically normal hips. Methods: Discrete element analysis (DEA) was used to compute joint contact stresses during the stance phase of normal walking gait for 10 individuals with radiographically normal, asymptomatic hips and 10 age- and weight-matched patients with acetabular dysplasia who underwent periacetabular osteotomy (PAO). Results: Mean and peak contact stresses were higher ( p 2 (IQR 378–496 mm2) to 595 mm2 (IQR 474–660 mm2), but remained significantly smaller ( p = 0.001) than that for radiographically normal hips (median 1120 mm2, IQR 853–1444 mm2). Conclusions: While contact mechanics in dysplastic hips more closely resembled those of normal hips after PAO, the elevated contact stresses and smaller contact areas remaining after PAO indicate ongoing mechanical abnormalities should be expected even after radiographically successful surgical correction.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ad3adf6fc4b3f498180a1143d9e658a4 https://doi.org/10.1177/11207000211036414 Zobrazit plný text záznamu