Primary total hip arthroplasty with a spongy metal surface acetabular component for hip dysplasia.
We evaluated the clinical and radiographic results of primary total hip arthroplasty for 81 dysplastic hips (71 patients) using cementless Spongiosa Metal II cups (ESKA Implants, Lübeck, Germany). The mean follow-up period was 6.4 years (minimum 5 years), and the preoperative mean Japanese Orthopaedic Association hip score had improved from 45.2 to 87.4 points at the latest follow-up. The radiographic outcome was no aseptic loosening in all 81 hips. The hip center was located significantly more superior than in the contralateral normal hip in 45 patients, but the difference was less than 10 mm; however, there was no significant difference in the lateral position of the hip center. The use of a Spongiosa Metal II cup for dysplastic hips provided satisfactory 5- to 10-year clinical and radiographic results.
Department of Orthopaedic Surgery, Gifu University Graduate School of Medicine, Gifu, Japan.
Iori
I
Takigami
Yoshiki
Y
Ito
Kazu
K
Matsumoto
Hiroyasu
H
Ogawa
Nobuo
N
Terabayashi
Katsuji
K
Shimizu
D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip; D003035:Cobalt; D005260:Female; D006618:Hip Dislocation, Congenital / Q000150:complications / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D008982:Molybdenum; D015207:Osteoarthritis, Hip / Q000209:etiology / Q000601:surgery*; D011474:Prosthesis Design; D013499:Surface Properties
D003035:Cobalt; D008982:Molybdenum