PMC6742869_01
Pre-operative AP radiograph. Pre-operative standing AP pelvic radiograph depicting right hip osteoarthritis and impingement, with the presence of joint space narrowing, bone-onbone apposition, subchondral cystic changes, and sclerosis. Moderate-to-severe joint space narrowing is visible on the left hip.
JOCR-9-93-g001.jpg
PMC6742869_01_JOCR-9-93-g001.jpg
F1
Plain film radiographs revealed severe right hip osteoarthritis with bone-on-bone apposition, subchondral cysts and sclerosis (Fig. 1).
Intraoperative utilization of CAS. Intraoperative assessment using the navigation tool.
JOCR-9-93-g002.jpg
PMC6742869_01_JOCR-9-93-g002.jpg
F2
With the trial femoral implant in place, the hip was reduced and the navigation device used to confirm the restoration of leg lengths, measuring 4 mm of lengthening (Fig. 2).
Post-operative AP radiograph. A 2-week post-operative standing AP pelvic radiograph depicting Biomet ReCap hip resurfacing performed on the right hip. The cup overlay depicts values of inclination and anteversion at 38  and 14 , respectively.
JOCR-9-93-g003.jpg
PMC6742869_01_JOCR-9-93-g003.jpg
F3
Radiographic analysis revealed a final post-operative cup position of 14.3  anteversion and 38.3  inclination on the post-operative radiograph (Fig. 3), as well as a lengthened operative leg of 5 mm between pre- and post-operative images.