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Table 1 Clinical and imaging findings between fit-and-fill stem and tapered wedge stem groups in Dorr type C femurs

From: Tapered wedge stems decrease early postoperative subsidence following cementless total hip arthroplasty in Dorr type C femurs compared to fit-and-fill stems

  Fit-and-fill stem group (N = 55) Tapered wedge stem group (N = 49) P values
Sex (male:female) 5:50 11:38 0.1003
Age (years) 67.9 ± 10.5 65.3 ± 13.1 0.2605
BMI (kg/m2) 24.0 ± 4.0 24.1 ± 4.4 0.3426
Diagnosis    0.4950
 OA 49 46  
 Other (ONFH or RA) 6 3  
HHS
 Preoperative 53.5 ± 19.6 59.1 ± 17.6 0.1320
 Postoperative (6W) 84.2 ± 8.9 85.1 ± 9.2 0.6191
Subsidence (mm)
Duration from
 0–1W 0.24 ± 0.36 0.23 ± 0.41 0.4862
 1–6W 0.38 ± 0.68 0.16 ± 0.32 0.0423*
 0–6W 0.65 ± 0.87 0.24 ± 0.38 0.0438*
  > 3 mm subsidence 10 (18.2%) 1 (2.0%) 0.0091*
  1. Continuous variables are represented as mean ± standard deviation
  2. N number, BMI body mass index, OA osteoarthritis, ONFH osteonecrosis of the femoral head, RA rheumatoid arthritis, HHS Harris hip score, 0W immediate after surgery, 1W One week after the surgery, 6W Six weeks after surgery
  3. *P < 0.05 indicates significance