The Long-Term Results of Lubinus Interplanta Hemiarthroplasty in 228 Acute Femoral Neck Fractures. A Retrospective Six-Year Follow-Up

Abstract

Background and Aims: We retrospectively studied survival of patients treated with Lubinus interplanta (IP) semiendoprosthesis in acute hip fracture. Materials and Methods: The long-term results of Lubinus interplanta (IP) hemiarthroplasty in 228 acute medial fractures of the femoral neck in 222 patients were reviewed. Results and Conclusions: The mean age of the patients was 80.3 years. The mean duration of post-operative follow-up was 6.3 years (range 5–8 years). There were 12 reoperations (5.3 %), of which 8 were revisions (3.5 %). Dislocation rate was 3.5 %. Survival was 93 % at three years and 88 % at six years (Kaplan-Meier-survival analysis). Conclusions: These results surpass those previously published after Thompson and Moore hemiarthroplasties. The Lubinus prosthesis has a greater CCD (caput, collum, diaphyse) angle and a longer stem compared to Thompson and Moore implants. The need for resection of calcar cortex is also limited. These biomechanical facts may explain the good long-term results of Lubinus hemiarthroplasty.