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Bipolar hemiarthoplasty

C Rogmark, O Leonardsson
UNLABELLED: This review summarises the evidence for the treatment of displaced fractures of the femoral neck in elderly patients. Results from randomised clinical trials and national register studies are presented when available. The advantages of arthroplasty compared with internal fixation are supported by several studies. A number of studies contribute to the discussions of total hip arthroplasty (THA) versus hemiarthroplasty and unipolar versus bipolar hemiarthroplasty, but no clear-cut evidence-based recommendation can be made...
March 2016: Bone & Joint Journal
Chandra Prakash Pal, Amrit Goyal, Deepak Kumar, Rajendra Kumar Shakunt, Karuna Shankar Dinkar, Suneel Kumar
AIM: To know the incidence of postoperative deep vein thrombosis after hip surgery in Indian patients. METHOD: Our study comprises 108 patients undergoing major lower limb orthopaedic surgery. Evaluation by colour Doppler ultrasonography to detect DVT was performed on both lower limbs between seventh and 14th postoperative day. There were 15 total hip replacements (THR), 50 bipolar hemiarthroplasties and 43 proximal femoral fixations by intra-/extra-medullary implant...
January 2016: Journal of Clinical Orthopaedics and Trauma
Ahmed Mushtaq Khan, Syed Faraz Anwar, Sohail Hafeez
OBJECTIVE: To explore a less pain-inciting implant in terms of anterior thigh pain after hip hemi-arthroplasty in displaced intra-capsular fractures of the neck of femur. METHODS: The cross-sectional comparative study was conducted at the Combined Military Hospital, Rawalpindi, from November 2013 to June 2014, and comprised patients of either genders with age above 55 years and having displaced intra-capsular fractures of the neck of femur. The patients were divided into two equal groups, with Group A patients undergoing Austin Moore hemi-arthoplasty and Group B having cemented bipolar hemi-arthoplasty...
November 2015: JPMA. the Journal of the Pakistan Medical Association
Dennis Z W Ng, Kevin B L Lee
INTRODUCTION: Hip hemiarthoplasties are commonly performed for displaced femoral neck fractures. Considerable differences of opinion exists regarding the choice between unipolar and bipolar designs. The main theoretical advantage of a bipolar over a unipolar prosthesis is the reduction of acetabular erosion due to movement taking place within the implant rather than at the acetabular implant interface. It is thus hypothesised that bipolar prostheses lead to better long-term functional outcomes with less complications...
June 2015: Annals of the Academy of Medicine, Singapore
Sebastian Mukka, Jenny Lindqvist, Sara Peyda, Cyrus Brodén, Sarwar Mahmood, Hamid Hassany, Arkan Sayed-Noor
PURPOSE: To analyze postoperative global femoral offset (FO), leg length discrepancy (LLD) and Wiberg angle as risk factors for prosthetic dislocation after treatment with bipolar hemiarthoplasty (HA) through a postero-lateral approach for femoral neck fracture (FNF). METHODS: Three hundred and seventy three patients treated with a cemented bipolar HA through a postero-lateral approach between January 2006 and December 2013 were included in a cohort study with a follow-up time ranging from 6 months to 7 years...
July 2015: International Orthopaedics
Yee-Suk Kim, Young-Ho Kim, Kyu-Tae Hwang, Il-Yong Choi
PURPOSE: The outcomes of bipolar hemiarthoplasty for osteonecrosis of femoral head have been disappointing due to cartilage degeneration and osteolysis. We investigated the cartilage degeneration, joint motion, and factors associated with osteolysis. METHODS: We retrospectively reviewed 134 bipolar hemiarthroplasties. The wear rate of acetabular cartilage was calculated. The ranges of motion of outer bearing and inner bearing were determined, and the ratio (O/I ratio) was calculated...
October 2012: International Orthopaedics
Ken Hiragami, Arata Mukohyama, Yoshiyuki Maruyama
Migration of the outer head after bipolar hemiarthroplasty within several years after surgery is not a rare complication. We present a patient with cerebral palsy who showed lateral migration of the outer head seven months after bipolar hemiarthroplasty for femoral neck fracture. The patient had no acetabular pathology prior to the fracture, and lacked ambulatory ability in a community setting. She underwent conversion to a total hip arthroplasty and returned to her previous lifestyle.
October 2010: Indian Journal of Orthopaedics
Ji Yong Moon, Byung Su Kim, Hye Ryeon Yun, Jung Hye Choi, Young Yul Lee, In Soon Kim, Myung Ju Ahn
Chronic myelogenous leukemia (CML) is a malignant clonal disorder of hemopoietic stem cells characterized by abnormal proliferation and accumulation of immature granulocyte. Leukostasis is one of the complications of CML and is characterized by partial or total occlusion of microcirculation by aggregation of leukemic cells and thrombi leading to respiratory, ophthalmic or neurologic symptoms. We experienced a rare case of avascular necrosis of the femoral head as the initial presentation of chronic myelogenous leukemia...
September 2005: Korean Journal of Internal Medicine
M Thomsen, S J Breusch, U Schneider, D Kubein-Meesenburg, H Nägerl
Aim of the study was to analyze the developments of hemiarthroplasties from the femur prosthesis to the bicentric bipolar prosthesis of today. Using the theories published 1990 by Nägerl about "dimeric link chains", nineteen bipolar-head systems were analyzed and biomechanically explained. Clinical findings, such as the problems of luxation and varus positioning of the monocentric bipolars, as well as the valgus, "self-centric" positioning of the bicentric prosthesis are discussed and explained correctly by physics...
November 2001: Der Unfallchirurg
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