A new uncemented hydroxyapatite-coated femoral component for the treatment of femoral neck fractures TWO-YEAR RADIOSTEREOMETRIC AND BONE DENSITOMETRIC EVALUATION IN 50 HIPS

作者：Skoldenberg O G^*; Salemyr M O; Boden H S; Lundberg A; Ahl T E; Adolphson P Y

来源：Journal of Bone and Joint Surgery-British Volume, 2011, 93B(5): 665-677.

DOI：10.1302/0301-620X.93B5.25374

Our aim in this pilot study was to evaluate the fixation of, the bone remodelling around, and the clinical outcome after surgery of a new, uncemented, fully hydroxyapatite-coated, collared and tapered femoral component, designed specifically for elderly patients with a fracture of the femoral neck.
We enrolled 50 patients, of at least 70 years of age, with an acute displaced fracture of the femoral neck in this prospective single-series study. They received a total hip replacement using the new component and were followed up regularly for two years.
Fixation was evaluated by radiostereometric analysis and bone remodelling by dual-energy x-ray absorptiometry. Hip function and the health-related quality of life were assessed using the Harris hip score and the EuroQol-5D.
Up to six weeks post-operatively there was a mean subsidence of 0.2 mm (-2.1 to +0.5) and a retroversion of a mean of 1.2 (-8.2 to +1.5). No component migrated after three months. The patients had a continuous loss of peri-prosthetic bone which amounted to a mean of 16% (-49% to +10%) at two years. The mean Harris hip score was 82 (51 to 100) after two years.
The two-year results from this pilot study indicate that this new, uncemented femoral component can be used for elderly patients with osteoporotic fractures of the femoral neck.

• 出版日期2011-5