Case Control Study
Copyright ©The Author(s) 2015.
World J Orthop. Dec 18, 2015; 6(11): 970-976
Published online Dec 18, 2015. doi: 10.5312/wjo.v6.i11.970
Table 1 Patients’ characteristic data
ES group (n = 49)DS group (n = 45)P value
Age1, yr80 ± 881 ± 80.67
Female gender34 (69)35 (78)0.36
BMI1, kg/m222.6 ± 2.823.3 ± 4.40.40
Fracture right side24 (49)24 (53)0.67
No. of comorbid diseases
0-118 (37)11 (24)0.25
2 or more31 (63)34 (76)
ASA physical status
339 (80)28 (62)0.07
410 (20)17 (38)
Time to surgery11.6 ± 0.98.9 ± 3.6< 0.01
Type of antiplatelet agents
Aspirin alone42 (86)36 (80)0.59
Clopidogrel7 (14)9 (20)
Preinjury ambulation status
Walk independently42 (86)36 (80)0.67
Walk with gait aid7 (14)8 (18)
Wheel chair or bed ridden0 (0)1 (2)
Preoperative laboratory value1
Hemoglobin, g/dL12.0 ± 1.611.2 ± 1.2< 0.01
Platelet count, × 103/mm3241 ± 85284 ± 960.03
Creatinine clearance, mg/dL1.3 ± 1.11.7 ± 1.70.92
Serum albumin, g/L35.6 ± 4.434.9 ± 5.30.53
aPTT, s27.5 ± 3.626.6 ± 4.30.34
PT, s11.9 ± 1.112.4 ± 2.50.23
Regional anesthesia31 (63)31 (69)0.66
Type of operation
Cemented26 (53)37 (82)< 0.01
Cementless23 (47)8 (18)
Operative time1, min98 ± 27102 ± 340.48
Table 2 Blood loss outcomes
Bleeding outcomeES group(n = 49)DS group(n = 45)P value
Blood loss1, mL
Intraoperative blood loss291 ± 136315 ± 2240.52
Drainage blood loss201 ± 131178 ± 910.33
Total apparent blood loss492 ± 210493 ± 2290.97
Calculated blood loss292 ± 222303 ± 1870.8
PRC transfusion1, UI0.6 ± 0.90.7 ± 0.80.49
Table 3 Postoperative mortality and morbidity
Postoperative outcomeES group(n = 49)DS group(n = 45)P value
Mortality0 (0)2 (4)0.23
Postoperative complications
Overall12280.02
Pneumonia25
Urinary tract infection711
Pressure sore02
Cardiac03
Thromboembolic complication22
Delirium15
ICU requirement19 (39)14 (31)0.39
LOS1, d7 ± 314 ± 9< 0.0001
PLOS16.1 ± 3.47.4 ± 7.80.28
Readmission1 (2)6 (13)0.052
One-year ambulation statusn = 49n = 43
Walk independently18 (37)7 (16)0.03
Walk with gait aid30 (61)33 (77)
Wheelchair0 (0)3 (7)