Simultaneous femoral head reduction osteotomy (FHRO) combined with periacetabular osteotomy (PAO) for the treatment of severe femoral head asphericity in Perthes disease

Table 3 Clinical outcome measures of the patients before the operation and in the most recent postoperative follow-up

Variable	Patients 1		Patient 2		Patient 3		Patient 4		Mean ± SD		Improvement
Time point	Before	Follow-up	Before	Follow-up	Before	Follow-up	Before	Follow-up	Before	Follow-up	Improvement
Harris hip score (HHS)	93	97	57	94	61	97	65	97	69	96.3	27.3
Hip range of motion
Total	205	260	210	255	225	280	250	275	222.5	267.5	45
Flexion	120	120	120	120	130	130	120	120	122.5	122.5	0
Abduction	20	35	25	30	20	45	40	45	26.3	38.8	12.5
Adduction	10	30	10	30	20	30	30	30	17.5	30	12.5
Internal rotation	10	30	10	30	15	30	20	35	13.8	31.3	17.5
External rotation	45	45	45	45	40	45	40	45	42.5	45	2.5
Merle d’Aubigne´-Postel score
Total	13	18	10	18	13	18	13	18	12.3	18	5.8
Pain	3	6	2	6	3	6	3	6	2.8	6	3.3
Mobility	6	6	5	6	6	6	6	6	5.8	6	0.3
Walking ability	4	6	3	6	4	6	4	6	3.8	6	2.3

ISSN: 1749-799X