title: Clinical results, radiological findings and survival of a proximally hydroxyapatite-coated hip ABG II stem at a minimum of ten years' follow-up: results of a consecutive multicentre study of 1148 hips in 1053 patients.
abstract: We report a multicentre prospective consecutive study assessing the long-term outcome of the proximally hydroxyapatite (HA)-coated ABG II monobloc femoral component in a series of 1148 hips in 1053 patients with a mean age at surgery of 64.77 years (22 to 80) at a mean follow-up of 10.84 years (10 to 15.25). At latest follow-up, the mean total Harris hip score was 94.7 points (sd; 6.87; 49 to 100), and the mean Merle d'Aubigné-Postel score was 17.6 points (sd 1.12; 7 to 18). The mean total Engh radiological score score was 21.54 (sd 5.77; 3.5 to 27), with 95.81% of 'confirmed ingrowth', according to Engh's classification. With aseptic loosening or pain as endpoints, three AGB II stems (0.26%) failed, giving a 99.7% survival rate (se 0.002; 95% confidence interval (CI) 0.994 to 1) at 14 years' follow-up. The survival of patients ≤ 50 years of age (99.0% (se 0.011; 95% CI 0.969 to 1)) did not differ significantly from those of patients aged > 50 years (99.8% (se 0.002; 95% CI 0.994 to 1)). This study confirmed the excellent long-term results currently achieved with the ABG II proximally HA-coated monobloc stem. Cite this article: Bone Joint J 2013;95-B:1610-16.
authors.affiliation: Clinique Médico-Chirurgicale, 200 Rue d'Auvergne, 62700 Bruay Labuissière, France.
authors.forename: J-A
authors.initials: JA
authors.lastname: Epinette
authors.forename: G
authors.initials: G
authors.lastname: Asencio
authors.forename: J
authors.initials: J
authors.lastname: Essig
authors.forename: B
authors.initials: B
authors.lastname: Llagonne
authors.forename: C
authors.initials: C
authors.lastname: Nourissat
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods; D020099:Coated Materials, Biocompatible; D017886:Durapatite; D005260:Female; D005500:Follow-Up Studies; D006621:Hip Joint / Q000000981:diagnostic imaging; D006622:Hip Prosthesis; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D012086:Reoperation / Q000706:statistics & numerical data; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D020099:Coated Materials, Biocompatible; D017886:Durapatite
keywords: Clinical follow-up; HA; Hip arthroplasty; Hydroxyapatite; Proximally-coated stem; Radiological patterns; Survival