Changes in hip joint contact stress during a gait cycle based on the individualized modeling method of “gait-musculoskeletal system-finite element”

Table 3 Hip joint reaction forces, peak contact pressure and contact area changes during different phases of a gait cycle

Phases of a gait cycle	Components (Fx, Fy, Fz) of hip joint reaction forces (N)						Peak contact pressure (MPa)		Contact area (mm²)
	Model 1			Model 2			Model 1	Model 2	Model 1	Model 2
	− F x	− F y	− F z	− F x	− F y	− F z	Model 1	Model 2	Model 1	Model 2
1	89.32	746.57	171.35	29.23	737.69	182.3	3.87	3.78	607.2	548.3
2	517.5	1706.6	636.6	241.27	1472.22	300.8	6.72	5.88	720.4	998.4
3	151.03	1211.7	404.1	103.97	1053.17	222.22	6	5.78	787.6	717.4
4	− 6	1562.5	442.43	67	1372.2	377.38	6.91	6.92	758.1	943.2
5	− 34.15	1837.55	342.37	11.67	1622.1	178.21	6.72	6.1	721.1	912.2
6	172.64	932.92	237.38	231.22	1033.38	334.17	2.88	3.5	589.3	672.2
7	91.23	478.7	243.72	45.22	344.83	177.31	2.06	1.52	316.7	238.8
8	92.67	717.3	172.74	37.18	710.26	177.9	3.24	3.32	586.4	426.1

Force components (Fx, Fy, Fz) corresponded to the local coordinate system of the thigh in MS models, Fx: medio-lateral, Fy: vertical, Fz: anterior–posterior. Peak contact pressure and contact area were detected using the FE analysis

ISSN: 1749-799X