Abstract: Background: Hemiarthroplasty (HA) is best treatment option for fracture neck of femur in elderly individuals above 60 years with early mobilisation and less complications associated with internal fixation. However, there is inadequate evidence to support the choice between unipolar or bipolar HA. This study is aimed primarily at comparing the post-hemiarthroplasty functional results in subjects with fracture neck of femur using ‘Austin-Moore’s and bipolar prosthesis and studying the associated complications.
Methods: 55 subjects who were admitted between October 2014 to august 2016, operated with Austin-Moore’s prosthesis were allocated to Group A and subjects operated with bipolar Prosthesis were allocated to Group B, in K.R.HOSPITAL, Mysore Medical College, Mysore. All subjects were functionally assessed using the Harris Hip Score (HHS) and complications, if any, were documented. X-ray pelvis with both hip in anteroposterior view taken.
Results: In this study, mean age in Unipolar and Bipolar group was 76 and 72 years respectively. The mean Harris hip score in unipolar and bipolar groups was 84 and 92 respectively. There were no major differences in functional activities in either group, bipolar group has slightly better functional outcome which is statistically insignificant. In unipolar group there is marginal increase in chances of acetabular erosion. Complications rate is similar in both groups.
Conclusions: Based on the results of our study, unipolar and bipolar has its own advantages and disadvantages, we recommend unipolar arthroplasty in less ambulatory, low socioeconomic status, subjects with short life expectancy. Bipolar-arthroplasty in elderly medically fit individuals who are physically active.
