Fig 1.
Total hip arthroplasty with impaction bone grafting of the cup (IBG) and subtrochanteric shortening osteotomy.
Fig 2.
Experimental setup for gait measurements.
Left: position of the Vicon markers in frontal plane, Middle: position of the Vicon markers in sagittal plane; Right: skeletal structure generated by the Vicon system (frontal plane view).
Fig 3.
Musculoskeletal model generated by the AnyBody Modeling System.
Example of a participant with a THA on the left side; Blue markers: the experimental markers recorded with the Vicon system; Red markers: the AnyBody model markers, which track the experimental markers to simulate the desired motion.
Fig 4.
Experimental setup for muscle strength measurements.
A: Hip abduction strength setup, in side-lying position. B: Hip extension strength setup, in prone position.
Table 1.
Demographics, participant characteristics and walking speed.
Table 2.
Outcome kinematic and kinetic parameters during stance phase.
Table 3.
Kinematic and kinetic symmetry values of the patients.
Fig 5.
Kinematics in frontal and sagittal plane of women with unilateral DDH after a cemented THA and healthy subjects.
Green/dashed: operated side of patients; blue/dotted: non-operated side of patients; Purple/solid line: healthy subjects. The shaded areas represent the 95% confidence intervals of the mean. The kinematic and kinetic data were normalized to the stance phase of the gait cycle (heel strike to ipsilateral toe off). IC: Initial Contact; LR: Loading Response; MSt: Mid-Stance; TSt: Terminal Stance; PSw: Pre-Swing; deg: degrees; BW: body weight; Ht: height. Hip angle frontal plane: positive values represent adduction, negative values represent abduction; Hip angle sagittal plane: positive values represent flexion, negative values represent extension; Pelvis angle frontal plane: positive values represent pelvic contralateral drop, negative values represent pelvic hike; Pelvis angle sagittal plane: positive values represent pelvic anterior tilt, negative values represent pelvic posterior tilt; Trunk angle frontal plane: positive values represent ipsilateral lateral flexion, negative values represent contralateral lateral flexion; Trunk angle sagittal plane: positive values represent trunk flexion, negative values represent trunk extension; Hip moment frontal plane: positive values represent an abductor internal moment, negative values represent an adductor internal moment; Hip moment sagittal plane: positive values represent an extension moment, negative values represent a flexion moment.
Table 4.
Muscle strength.