Abstract
We treated 5 patients with femoral neck fracture using a conical stem combined with modular necks of different length and inclination (Modulus System, Lima Co. Italia) a between July and May 2010. The mean age at the time of surgery was 81 years, and the mean follow-up period was 113 days.
Walking ability was maintained in 3 of 5 patients post operatively. The first two cases showed more than 3mm sinking of the stem, but continuous sinking was not found after one month post operation. There was no relationship between stem sinking and the cortical index or canal flare index. Postoperative CT demonstrated a relationship of between the stem anteversion and the neck anteversion of the unaffected side. The use of a modularity stem was effective in reducing the risk of dislocation and the tension of the hip joint during operation.
