Varus positioning is the most common femoral malposition in total hip arthroplasty (THA). The aim of this study was to compare the long-term results of an anatomical cementless femoral stem positioned in varus with those in neutral alignment.
Data were prospectively collected and retrospectively reviewed for all patients who received a cementless anatomical femoral stem in THA between 1998 and 2008. After exclusion criteria applied, 127 stems had an varus axis deviated by more than 3 degrees (varus group) and 156 had an alignment between 0 and 2.9° from the femoral axis (neutral group). Survivorship rates, complications, clinical scores, thigh pain, radiological score, cortical hypertrophy and filling rate were analyzed. Mean follow-up was 10 years.
Study Type
OBSERVATIONAL
Enrollment
283
Hip AP Xray
CHU Nîmes
Nîmes, Gard, France
Long-term survival of THA with varus or neutral cementless fixation of a proximal HA-coated anatomic tapered femoral stem.
Kaplan-Meier survivorships free of revision of the femoral component for any reason, femoral fracture and revision of femoral component for fracture were calculated and compared by log-rank test for both group.
Time frame: Survival evaluation was carried out through study completion at an average of 10 years by the surgeon.
Long-term clinical outcomes with varus or neutral femoral stem.
Clinical status was assessed by the Harris hip score (HHS).
Time frame: Clinical evaluation was carried out through study completion at an average of 10 years by the surgeon.
Long-term radiological outcomes with varus or neutral femoral stem.
Radiological assessment was conducted at the last follow-up in charge antero-posterior and profile X-Ray.
Time frame: Radiological evaluation was carried out through study completion at an average of 10 years by the surgeon.
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