title: Clinical outcome of Zweymüller total hip arthroplasty for patients with high congenital hip dislocation.
abstract: Treatment of high congenital dislocation of the hip (CDH) remains controversial. We report the outcome of hip arthroplasty using a cementless threaded cup and a cementless straight stem in patients with high congenital hip dislocation. Between January 2001 and August 2004, 17 patients with high congenital hip dislocation were treated. During surgery, at least 25% of the cup was anchored in bone. By monitoring somatosensory-evoked potentials (SEPs) of the common peroneal nerve we were able to reduce the femoral head into position in the true acetabulum by releasing soft tissues. A bulk autogenous femoral head bone graft was implanted in 5 patients to achieve at least 75% bony coverage of the acertabular component. Follow-up ranged from 48 months to 91 months with an average of 69.7 months. The mean Harris hip score increased from 43 points preoperatively to 89 points at the time of final follow-up (P<0.001). Radiographic analysis showed bony union of the bone graft in all cases.
authors.affiliation: The Centre of Diagnosis and Treatment for Joint Disease, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Jiangsu, China.
authors.forename: Dongyang
authors.initials: D
authors.lastname: Chen
authors.forename: Zhihong
authors.initials: Z
authors.lastname: Xu
authors.forename: Dongquan
authors.initials: D
authors.lastname: Shi
authors.forename: Xusheng
authors.initials: X
authors.lastname: Qiu
authors.forename: Jin
authors.initials: J
authors.lastname: Dai
authors.forename: Tao
authors.initials: T
authors.lastname: Yuan
authors.forename: Wenjie
authors.initials: W
authors.lastname: Weng
authors.forename: Qing
authors.initials: Q
authors.lastname: Jiang
mesh_terms: D000328:Adult; D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000295:instrumentation* / Q000379:methods*; D016025:Bone Transplantation; D005073:Evoked Potentials, Somatosensory; D005260:Female; D006304:Health Status; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D016343:Monitoring, Intraoperative / Q000379:methods; D010543:Peroneal Nerve / Q000502:physiology; D011183:Postoperative Complications; D011474:Prosthesis Design; D011859:Radiography; D020127:Recovery of Function; D012720:Severity of Illness Index; D016896:Treatment Outcome