COMPARATIVE STUDY
JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL

Regional bone loss following femoral neck fracture: A comparison between cemented and cementless hemiarthroplasty

Dinko Vidović, Marija Punda, Nikica Daraboš, Miroslav Bekavac-Bešlin, Bore Bakota, Aljoša Matejčić
Injury 2015, 46 Suppl 6: S52-6
26606990
The aim of this prospective, randomised study was to measure and evaluate regional bone mineral changes and clinical results following the use of cemented and cementless hemiarthroplasty (HA) for treatment of femoral neck fracture in elderly patients. The study comprised 60 patients, 30 with cemented HA (group A) and 30 with cementless HA (group B). All patients underwent osteodensitometry of the contralateral hip, lumbar spine and bilateral distal femur. Dual-energy x-ray absorptiometry (DEXA) was scheduled at 1 month, 6 months and 1 year after surgery. Harris Hip Score (HHS) was used for functional assessment. Overall mortality rate was 20.3% within 1 year after surgery. There were no significant differences in morbidity, mortality and hospital stay between the two groups of patients. The implantation of cemented prosthesis took statistically significantly longer than that of cementless prosthesis (79.03±3.59 vs 68.02±5.97min; p=0.00). Functional score in patients treated with cemented HA was significantly higher compared with those with cementless HA. There was a trend of less intensive reduction of bone mineral density (BMD) in regions of interest of the lumbar spine and ipsilateral distal femur in patients with cemented HA (group A), whereas bone loss was less pronounced for the contralateral hip and distal femur in patients treated with cementless HA (group B). Management of displaced femoral neck fractures in elderly patients with cemented and cementless HA provides a comparable outcome with regard to morbidity and mortality; however, functional outcome of patients treated with cementless HA tends to be lower. There is less intensive BMD reduction in lumbar spine and ipsilateral distal femur in patients treated with cemented HA, whereas BMD reduction in patients treated with cementless HA is more likely to be less intensive in contralateral hip and distal femur.

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