A propensity score-matched analysis between patients with high hip dislocation after childhood pyogenic infection and Crowe IV developmental dysplasia of the hip in total hip arthroplasty with subtrochanteric shortening osteotomy

Table 1 Baseline characteristics of all recruited patients

Variable	HDACI (n = 29)	DDH (n = 29)	P value
Age (years)	42.8 ± 10.8	41.7 ± 12.5	0.720
Female gender	18 (62%)	18 (62%)	1.000
Body mass index (kg/m²)	22.9 ± 2.7	22.3 ± 3.2	0.403
ASA score
1	26 (90%)	26 (90%)	1.000
2	3 (10%)	3 (10%)	1.000
Preoperative LLD (cm)	4.8 ± 1.7	4.1 ± 1.6	0.638
Average follow-up (years)	5.0 ± 1.8	5.0 ± 1.8	1.000
Trendelenburg sign (no. of hips)	29	29	1.000
Preoperative Harris hip score	42.9 ± 9.9	44.1 ± 9.4	0.654
Modified MAP
Mean in points (mean ± SD)	6.5 ± 2.0	6.6 ± 2.1	0.949
Pain	2.1 ± 0.9	2.2 ± 0.8	0.649
Walking	1.9 ± 0.5	1.8 ± 0.5	0.612
ROM	2.5 ± 0.9	2.5 ± 0.9	1.000
SF-12
PCS	10.5 ± 1.5	10.8 ± 1.6	0.451
MCS	13.7 ± 1.9	14.1 ± 1.4	0.347

HDACI high dislocation after childhood infection, DDH developmental dysplasia of the hip, ASA American Society of Anesthesiologists, LLD leg length discrepancy, MAP Merle d’Aubigné-Postel, ROM range of motion, SF-12 12-item short-form health survey questionnaire, MCS mental component summary, PCS physical component summary, SD standard deviation

ISSN: 1749-799X