| Literature DB >> 32021013 |
Tsutomu Higashi1, Nobuhiro Kaku2, Shouhei Noda2, Tomonori Tabata2, Hiroaki Tagomori2, Hiroshi Tsumura2.
Abstract
Simulations using three-dimensional computer-aided design were performed with the various conditions to research the movement distance of the ball head and total range of motion until impingement and dislocation (ROM(t)) which involved in joint stability. Although a large ball head increases the entire ROM(t) and oscillation angle, it decreases stability transitioning from impingement to dislocation. Conversely, though large neck diameter increases the simulated stability from impingement to dislocation, it reduces the ROM(t) and oscillation angle. ROM(t) decreases with change in neck shape and is greatly affected by the presence of osteophytes, even if the head-neck ratio remains the same.Entities:
Keywords: Ball head size; CAD, computer-aided design; Cup size; Dislocation; Hip prosthesis design; Impingement; Movement distance; Osteophyte height; ROM(i-d), ROM from impingement to dislocation; ROM(t), total range of motion until dislocation; ROM, range of motion until dislocation; Range of motion; Stem neck diameter; Stem neck shape; THA, total hip arthroplasty; Total hip arthroplasty; rROM, the ratio of the ROM from impingement to dislocation in total ROM until dislocation = ROM(i-d)/ ROM(t)
Year: 2019 PMID： 32021013 PMCID： PMC6994771 DOI： 10.1016/j.jor.2019.09.015
Source DB: PubMed Journal: J Orthop ISSN： 0972-978X