Periprosthetic bone loss following hemiarthroplasty: a comparison between cemented and cementless hip prosthesis.
The aim of this prospective randomized clinical study was to evaluate the magnitude of bone mineral changes as well as the clinical results after cemented and cementless haemiarthroplasty (HA) for femoral neck fracture. The study was comprised of 60 patients (mean age 85.2 years); 30 of them underwent cemented HA and 30 cementless HA. All patients underwent osteodensitometry for the purpose of Bone Mineral Density (BMD) evaluation. BMD was measured with dual-energy X-ray absorptiometry test (DEXA scans), which was scheduled at 1 month, 6 months and 1 year after surgery. BMD was evaluated at each of the seven Gruen zones. Harris Hip Score (HHS) at 3 months, 6 months and 12 months was used for evaluation of functional outcome. No difference was found between the two groups of patients in terms hospital stay, morbidity and mortality. The procedure took longer time in group A (cemented HA) compared to group B (cementless HA) (79.03 ± 3.59 vs 68.02 ± 5.97 minutes; p = 0.00). The Harris hip score averaged 76.97 ± 7.49 one year after surgery. At each follow - up examination the HHS was significantly higher in patients with cemented HA. We noted a trend of less intensive BMD reduction in all Gruen zones in group A compared to group B. However, the difference in BMD reduction between these two groups was significant only in zones 2, 3 and 4. Our results support the view that cemented hemiarthroplasty should be used for the management of displaced femoral neck fractures providing better functional outcomes and lower periprosthetic bone loss.
University Hospital "Sisters of Mercy", Department of Trauma and Orthopaedic Reconstructive Surgery, Vinogradska cesta 29, 10000 Zagreb, Croatia. Electronic address: dinko.vidovic@gmail.com.
Dinko
D
Vidovic
Aljosa
A
Matejcic
Marija
M
Punda
Mihovil
M
Ivica
Mladen
M
Tomljenovic
Miroslav
M
Bekavac-Beslin
August
A
Mijic
Bore
B
Bakota
D000368:Aged; D000369:Aged, 80 and over; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001843:Bone Cements; D015519:Bone Density; D002484:Cementation; D005260:Female; D005265:Femoral Neck Fractures / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D062785:Hemiarthroplasty / Q000009:adverse effects*; D006622:Hip Prosthesis; D006801:Humans; D011446:Prospective Studies; D011859:Radiography; D016896:Treatment Outcome
D001843:Bone Cements
Bone loss; Cemented; Cementless haemiarthroplasy; Harris hip score