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Table 1 General information of the patients in the two groups

From: Clinical and radiologic outcomes in patients undergoing primary total hip arthroplasty with Collum Femoris Preserving stems: a comparison between the direct anterior approach and the posterior approach

General characteristics Group A
(N = 127)
Group B
(N = 121)
Test statistics P
Age (years) 52.00 ± 12.42 51.15 ± 11.88 0.561# 0.575
Sex
 Male 94 91 0.046* 0.830
 Female 33 30   
BMI (kg/m2) 25.45 ± 3.47 24.82 ± 3.71 1.719# 0.088
Smoking status
 Yes 16 15 0.002* 0.962
 No 111 106   
Alcohol consumption
 Yes 20 15 0.574* 0.449
 No 107 106   
Indications
 ONFH 119 106 1.988* 0.575
 DDH 4 6   
 OA 1 3   
 Other 3 6   
Preoperative HHS 51.39 ± 11.94 52.47 ± 10.47 1.138# 0.255
Range of motion (°)
 Flexion-extension 90.13 ± 17.34 88.84 ± 17.80 0.540# 0.589
 Abduction-adduction 50.31 ± 13.53 49.22 ± 14.22 0.685# 0.494
 External rotation-internal rotation 45.48 ± 16.11 47.74 ± 15.93 0.905# 0.365
  1. Note: Group A: DAA, group B: PA,
  2. BMI, body mass index; ONFH, osteonecrosis of the femoral head; DDH, developmental dysplasia of the hip; OA, osteoarthritis; “other” includes fractures of the femoral neck and femoral head necrosis after acetabular surgery
  3. *Chi-square test, #Mann-Whitney U test