Outcome Analysis of Osteosynthesis Versus Hemiarthroplasty for the Treatment of Displaced Femoral Neck Fracture in Young Elderly Patient

This study was designed to compare the osteosynthesis and hemiarthroplasty treatment among the elderly population and evaluate the postoperative functional performance of these two recommended treatments of a displaced femoral neck fracture.

Methodology: This retrospective study was conducted in Bone Care trauma center Heerabad Hospital Hyderabad Pakistan from March 2019 to March 2020. A total of 74 patients of age between 60 to 70 years were selected. All the selected patients were diagnosed with femoral neck fractures (Garden’s III and IV). Harris's hip score was used to evaluate the clinical status of patients with pain, whereas we used Palmer and Parker's mobility to access mobility. Implant breakage, screw cut, and nonunion were considered as parameters of osteosynthesis failure. At the same time, hemiarthroplasty failure was defined as two or more recurrent dislocation, aseptic loosening, periprosthetic fracture, and infection.

Results: In the first three postoperative months, the mean score of the hemiarthroplasty group was reported as 74.44±8.480, which was comparatively high than the osteosynthesis group (66.44±8.520). After six months, this score reached 80.12±7.005 in the hemiarthroplasty group and reached its maximum of 92.14±7.125. After the first three months, the increment ratio was relatively slow with six ratios, but in the last visit, we observed a sudden increase in score in both groups. Regarding Palmer and Parker's mobility score, the hemiarthroplasty group reflected better outcomes than the osteosynthesis group.

Conclusion: Our study concluded that management of displaced femoral neck fracture with osteosynthesis revealed a high probability of nonunion, screw cutout complications and enhanced the risk of reoperation. Patients treated with osteosynthesis showed delay rehabilitation.