title: [A comparative study on short-term effectiveness between cemented and uncemented total hip arthroplasty for osteonecrosis of femoral head after renal transplantation].
abstract: OBJECTIVE
  To compare the short-term effectiveness between primary cemented and uncemented total hip arthroplasty (THA) for osteonecrosis of the femoral head (ONFH) after renal transplantation.
  
  
  METHODS
  The clinical data were retrospectively analyzed from 18 patients (21 hips) with ONFH after renal transplantation undergoing cemented THA in 11 cases (13 hips) (cemented group) and uncemented THA in 7 cases (8 hips) (uncemented group) between February 2005 and February 2012. There was no significant difference in gender, age, disease duration, ONFH stage, preoperative Harris score, and bone density between 2 groups (P > 0.05). Postoperative complications were observed in 2 groups; the hip function was assessed based on Harris scores; X-ray film was used to observe the prosthetic situation.
  
  
  RESULTS
  All the wounds healed by first intention. The patients were followed up 6-77 months (mean, 46 months) in the cemented group, and 4-71 months (mean, 42 months) in the uncemented group. Femoral prosthesis infection occurred in 1 case (1 hip) respectively in each group; hip dislocation, femoral prosthesis loosening, and acetabular prosthesis loosening occurred in 1 case (1 hip) of the cemented group, respectively. At last follow-up, the incidences of postoperative complications and revision rate of the cemented group were 30.7% (4/13) and 23.1% (3/13) respectively, which were significantly higher than those of the uncemented group [12.5% (1/8) and 0 (0/8)] (P=0.047, P=0.040). Harris score was significantly increased to 94.1 +/- 3.7 in the uncemented group and 90.0 +/- 4.2 in the cemented group, showing significant differences compared with the preoperative scores in 2 groups (P < 0.05), but there was no significant difference between 2 groups (t = -1.815, P = 0.062). Postoperative X-ray films showed that the initial position of the prosthesis was satisfactory. At last follow-up, the bone fixation, fibrous stability, and loosening of the femoral prosthesis and loosening of acetabular prosthesis occurred in 9 hips, 3 hips, 1 hip, and 1 hip of the cemented group, respectively; bone fixation of the femoral prosthesis and stability of acetabular prosthesis were observed in all hips of the uncemented group. There was no heterotopic ossification in 2 groups.
  
  
  CONCLUSIONS
  Uncemented THA after renal transplantation can obtain satisfactory shortterm effectiveness, and uncemented THA is better than the cemented THA; however, the middle- and long-term effectivenesses need further observation.
authors.forename: Liankui
authors.initials: L
authors.lastname: Yu
authors.forename: Chao
authors.initials: C
authors.lastname: Qi
authors.forename: Tengbo
authors.initials: T
authors.lastname: Yu
authors.forename: Qingyang
authors.initials: Q
authors.lastname: Meng
authors.forename: Xia
authors.initials: X
authors.lastname: Zhao
authors.forename: Kai
authors.initials: K
authors.lastname: Liu
authors.forename: Yan
authors.initials: Y
authors.lastname: Cai
mesh_terms: D000077:Acetabulum / Q000000981:diagnostic imaging / Q000601:surgery; D000328:Adult; D019644:Arthroplasty, Replacement, Hip / Q000009:adverse effects / Q000379:methods*; D001843:Bone Cements; D005260:Female; D005271:Femur Head Necrosis / Q000000981:diagnostic imaging / Q000209:etiology / Q000601:surgery*; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000601:surgery*; D006622:Hip Prosthesis; D006801:Humans; D016030:Kidney Transplantation / Q000009:adverse effects; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications / Q000453:epidemiology; D011474:Prosthesis Design; D011475:Prosthesis Failure; D011859:Radiography; D016059:Range of Motion, Articular; D012189:Retrospective Studies; D016896:Treatment Outcome
chemical_list: D001843:Bone Cements