title: Bipolar versus total hip endoprosthesis: functional results.
abstract: Some functional parameters of the hip-joint 3.3 years on average (range 2-8.6 years) after hip arthroplasty are compared with regard to two types of hip endoprostheses: the total (TEP) and the bipolar (BPEP). Flexion, extension, abduction, adduction, and internal and external rotation were measured for 75 patients with BPEP type Self-Locking, for 11 patients with BPEP type Vario-Cup, and for 43 with TEP type Lubinus. One-way analysis of variance with respect to co-variances was used for statistical testing of the measured data. It was found that flexion, abduction and adduction were significantly higher in the BPEP endoprosthesis (P < 0.05). The results obtained are favourable for the bipolar hip endoprosthesis, and they can be related to the biomechanical differences between both types of hip endoprosthesis.
authors.affiliation: Department of Traumatology, University Medical Centre, Ljubljana, Slovenia. smrke@mf.uni-lj.si
authors.forename: D
authors.initials: D
authors.lastname: Smrke
authors.forename: R
authors.initials: R
authors.lastname: Beden
authors.forename: V
authors.initials: V
authors.lastname: Stankovski
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D001696:Biomechanical Phenomena; D005260:Female; D005265:Femoral Neck Fractures / Q000601:surgery*; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D010147:Pain Measurement; D011183:Postoperative Complications / Q000503:physiopathology*; D016059:Range of Motion, Articular / Q000502:physiology*; D016474:Weight-Bearing / Q000502:physiology