Surgical correction of unsuccessful derotational humeral osteotomy in obstetric brachial plexus palsy: Evidence of the significance of scapular deformity in the pathophysiology of the medial rotation contracture

Table 1 Radiographic classifications of glenohumeral deformity

	Preoperative values													Postoperative values
Patient no.	Subluxation	Version	% Scapula visible over clavicle	Glenohumeral deformity*	Age at surgery	Abduction	External rotation	Hand to Neck	Hand to Spine	Hand to Mouth	Hand to Mouth angle	Supination angle	Total Mallet	Abduction	External rotation	Hand to Neck	Hand to Spine	Hand to Mouth	Hand to Mouth angle	Supination angle	Total Mallet	Follow-up (months)
1	13.5	-27	N/A	III	10.4	4	1	2	2	1	120	-90	10	4	3	3	3	4	40	60	17	6
2	22.2	-24	25	III	11.9	4	3	3	3	3	70	30	16	4	4	4	3	4	10	80	19	9
3	45.7	-28	N/A	III	7.9	4	1	3	2	2	110	-90	12	4	3	3	2	4	20	35	16	14
4	59.7	-42	41	V	10.4	4	2	4	2	1	135	0	13	4	4	4	3	4	10	90	19	4

Mallet scores and functional hand to mouth and forearm supination angles in patients who following failed humeral osteotomy recently underwent Triangle Tilt surgery. *Glenohumeral deformity classification according to Waters [21]. N/A data not available.