Relationship between the lateral acromion angle and postoperative persistent pain of distal clavicle fracture treated with clavicle hook plate

Table 4 JOA Scores and postoperative clinical data of cases with different time of hardware retention

Time of hardware retention (month)	N	Postoperative recovery			Impingement rate	RCL rate
Time of hardware retention (month)	N	JOA Scores (3 months postoperatively)	JOA Scores (3 months after removal)	JOA Scores (1 year after removal)	Impingement rate	RCL rate
≤ 6	28	79.3 ± 6.7	86.5 ± 7.5	90.9 ± 7.4	9/28 (32.1%)	4/28 (14.3%)
> 6	66	79.8 ± 7.7	85.1 ± 5.6	87.6 ± 5.9	30/66 (45.5%)	9/66 (13.6%)
P	–	0.739	0.212	0.049*	0.009*	0.870

All variables are presented as mean ± SD except Impingement rate and RCL rate
N number of patients, JOA Japanese Orthopaedic Association, RCL rotator cuff lesion
*P < 0.05