Total hip replacement using MINIMA® short stem: A short-term follow-up study

Table 1 Demographics and clinical data

Characters	Values
Number of patients1	61
Gender female2	42 (68.6%)
Gender male2	19 (31.4%)
Age (yr)3	56 ± 11.1 (25-73)
BMI3	31.2 ± 4.9 (22.8-50.0)
ASA3	1.8 ± 0.6 (1.0-3.0)
Charlson index3	1.2 ± 0.5 (0.0-3.0)
LOS (d)3	3.3 ± 1.1 (2.0-8.0)
Operating time (min)3	89.9 ± 17.2 (60.0-120.0)
Blood loss (mL)3	1.154 ± 0.213 (0.735-1.631)
Transfusion rate2	2 (3.9%)
Follow-up (mo)3	33.4 ± 15.8 (12-57)
Follow-up (yr)3	2.8 ± 1.3 (1-4.8)
Follow-up more than 3 yr2	35 (56.9%)
Painpre-operative3	6.3 ± 1.9 (2.8-8.0)
Pain final follow-up3	0.1 ± 0.4 (0.0-2.0)
HHS pre- operative3	58.7 ± 13.5 (33.0-78.0)
HHS final follow-up3	95.1 ± 4.9 (83.0-100.0)
EQ-5D pre- operative3	77.3 ± 16.7 (50.0-95.0)
EQ-5D final follow-up3	79.6 ± 12.1 (50.0-100.0)
Satisfaction final follow-up3	9.9 ± 0.3 (8.0-10.0)
Complications
Deep vein thrombosis2	1

¹The values are given as raw numbers.

²The values are given as raw numbers with the percentages in parentheses.

³The values are given as the mean ± SD and the range in parentheses. BMI: Bone mass index; ASA: American Society of Anesthesiologists score; LOS: Length of stay, HHS: Harris hip score; EQ-5D: EuroQol.

Table 2 Arthritis type bone morphology and radiological findings

	n (%)
Arthritistype
Primaryosteoarthritis	33 (54.9)
Dysplasia (type A)1	13 (21.6)
Low dislocation (type B)1	2 (3.9)
Osteonecrosis	7 (11.8)
Post traumaticarthrtis	4 (5.9)
Other	1 (2.0)
Previous operation (osteotomy, Fracture fixation)	6 (9.8)
Proximal femoral morphology (Dorr type)
A	11 (17.6)
B	48 (78.4)
C	2 (3.9)
Ectopic ossification (Brooker classification)
All	11 (17.6)
Class 1	6 (9.8)
Class 2	5 (7.8)
Modified Gruen zones
Radiolucent lines	0
Reactive lines (zones 3, 4, 5)	2 (3.3)
Cortical hypertrophy (zones 3, 5)	4 (6.6)
Subsidencein mm2	1.8 ± 0.9 (0.0-3.9)
Leg length discrepancy in mm2	1.7 ± 5.4 (-17-19)

¹Chartofylakidis classification.

²The values are given as the mean ± SD and the range in parentheses.