Retrospective Study
Copyright ©The Author(s) 2020.
World J Orthop. Apr 18, 2020; 11(4): 232-242
Published online Apr 18, 2020. doi: 10.5312/wjo.v11.i4.232
Table 1 Demographics and clinical data
CharactersValues
Number of patients161
Gender female242 (68.6%)
Gender male219 (31.4%)
Age (yr)356 ± 11.1 (25-73)
BMI331.2 ± 4.9 (22.8-50.0)
ASA31.8 ± 0.6 (1.0-3.0)
Charlson index31.2 ± 0.5 (0.0-3.0)
LOS (d)33.3 ± 1.1 (2.0-8.0)
Operating time (min)389.9 ± 17.2 (60.0-120.0)
Blood loss (mL)31.154 ± 0.213 (0.735-1.631)
Transfusion rate22 (3.9%)
Follow-up (mo)333.4 ± 15.8 (12-57)
Follow-up (yr)32.8 ± 1.3 (1-4.8)
Follow-up more than 3 yr235 (56.9%)
Painpre-operative36.3 ± 1.9 (2.8-8.0)
Pain final follow-up30.1 ± 0.4 (0.0-2.0)
HHS pre- operative358.7 ± 13.5 (33.0-78.0)
HHS final follow-up395.1 ± 4.9 (83.0-100.0)
EQ-5D pre- operative377.3 ± 16.7 (50.0-95.0)
EQ-5D final follow-up379.6 ± 12.1 (50.0-100.0)
Satisfaction final follow-up39.9 ± 0.3 (8.0-10.0)
Complications
Deep vein thrombosis21
Table 2 Arthritis type bone morphology and radiological findings
n (%)
Arthritistype
Primaryosteoarthritis33 (54.9)
Dysplasia (type A)113 (21.6)
Low dislocation (type B)12 (3.9)
Osteonecrosis7 (11.8)
Post traumaticarthrtis4 (5.9)
Other1 (2.0)
Previous operation (osteotomy, Fracture fixation)6 (9.8)
Proximal femoral morphology (Dorr type)
A11 (17.6)
B48 (78.4)
C2 (3.9)
Ectopic ossification (Brooker classification)
All11 (17.6)
Class 16 (9.8)
Class 25 (7.8)
Modified Gruen zones
Radiolucent lines0
Reactive lines (zones 3, 4, 5)2 (3.3)
Cortical hypertrophy (zones 3, 5)4 (6.6)
Subsidencein mm21.8 ± 0.9 (0.0-3.9)
Leg length discrepancy in mm21.7 ± 5.4 (-17-19)