title: Comparison of hydroxyapatite- and porous-coated stems in total hip replacement.
abstract: 24 patients underwent bilateral hip replacement, using the SROM modular system (Depuy Johnson & Johnson, MA, USA) with the porous-coated sleeve in one hip and an HA-coated sleeve in the other. 20 patients were followed for at least 4 years with clinical and radiographic evaluations. We found no difference between the two sides as regards the time of disappearance of thigh pain and hip scores. Radiographs showed a buttress sign in 18 HA-coated and 15 porous coated stems. There were no differences in the serial bone-remodeling pattern around the proximal sleeve and measurement of wear volume between the two groups. In the short- to medium-term, our findings support the view that the hydroxyapatite-coated femoral stem has no advantages over those with porous coating.
authors.affiliation: Department of Orthopedic Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, 50 Ilwon-dong, Gangnamgu 135-710, Seoul, Korea. yspark@smc.samsung.co.kr
authors.forename: Youn-Soo
authors.initials: YS
authors.lastname: Park
authors.forename: Jong-Yoon
authors.initials: JY
authors.lastname: Lee
authors.forename: Sang-Hak
authors.initials: SH
authors.lastname: Yun
authors.forename: Min-Wook
authors.initials: MW
authors.lastname: Jung
authors.forename: Irvin
authors.initials: I
authors.lastname: Oh
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000295:instrumentation* / Q000379:methods; D015519:Bone Density; D016723:Bone Remodeling; D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible / Q000627:therapeutic use*; D017886:Durapatite / Q000627:therapeutic use*; D019544:Equipment Failure Analysis; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D005500:Follow-Up Studies; D005684:Gait; D006622:Hip Prosthesis / Q000592:standards*; D006801:Humans; D006882:Hydroxyapatites; D008875:Middle Aged; D016348:Osseointegration; D015207:Osteoarthritis, Hip / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery; D010149:Postoperative Pain / Q000209:etiology; D016062:Porosity; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D012720:Severity of Illness Index; D013499:Surface Properties; D016896:Treatment Outcome
chemical_list: D002130:Calcium Phosphates; D020099:Coated Materials, Biocompatible; D006882:Hydroxyapatites; C094280:hydroxyapatite-tricalciumphosphate composite; D017886:Durapatite