Medium-term results following arthroscopic reduction in walking-age children with developmental hip dysplasia after failed closed reduction

Table 2 Surgery results and complications during follow-up

Patient no.	Concentric reduction on post-op X-ray	Pre-op safe zone (°)	Post-op safe zone (°)	Follow-up period (months)	Pre-op AC Index (°)	AC Index at most recent follow-up (°)	Post-op complications
Patient no.	Concentric reduction on post-op X-ray	Pre-op safe zone (°)	Post-op safe zone (°)	Follow-up period (months)	Pre-op AC Index (°)	AC Index at most recent follow-up (°)	Necrosis of the femoral head	Repeated dislocation of hip	Residual hip dysplasia
1	Yes	18	43	48	35	19	No	No	No
2	Yes	20	40	48	37	21	No	No	No
3	Yes	17	45	48	33	24	No	No	No
4	Yes	18	38	48	38	26	No	No	No
5	Yes	19	40	48	38	23	No	No	No
6	Yes	8	50	48	65	23	No	No	No
7	Yes	10	45	42	36	20	No	No	No
8	Yes	30	36	42	40	19	No	No	No

ISSN: 1749-799X