Bipolar and Unipolar Haemiarthroplasty in Fracture Neck Femur in Two Hospitals in Aden
Introduction: Replacement of the femoral head and neck with prosthesis offers a way to prevent complications of internal fixation in elderly patient. The study aimed to describe the distribution of neck of femur fracture according to sex and to compare patient’s functional outcomes related to the type of hemiarthroplasty (HA) prosthesis used. Methods: This is a retrospective study involved patients who have neck of femur fracture and treated by unipolar and bipolar HA at two hospitals in Aden, Yemen, between January 2013 and December 2016. Patients’ files were reviewed and postoperative radiographs were retrieved. Patients were classified into unipolar and bipolar prosthesis groups. Fisher test was used and p-value < 0.05 was considered as statistically significant.
Result: The study involved 43 patients (58.1% males and 41.9% females). The mean age was 72.6 ± 4.5 years. Garden types III and IV represented 86.0%. Unipolar prosthesis was applied in 81.4% of patients distributed as follows: 9.3% were in type II, 32.6% in type III and 39.5% in type IV. Bipolar prosthesis was applied in 18.6%. No statistically significant relations between types of HA prosthesis and fracture types. There were 4.6% in fracture type II and fracture type III each, and 11.6% in type IV were operated with cemented HA prosthesis, (p>0.05). Ten (23.3%) patients were complained of postoperative pain in unipolar group. Limb length shortening was in 5 patients in unipolar group. Most of the complications (32.5%) were in the unipolar group.
Conclusion: The results of the present study showed that the incidences of complications were higher in unipolar hemiarthroplasty.
Keywords: Bipolar, Unipolar, Hemiarthoplasty, Fracture Neck of Femur, Aden. Specialized Surgery Department, Faculty of Medicine and Health Sciences, University of Aden, Republic of Yemen.