Operative versus non-operative management following Rockwood grade III acromioclavicular separation: a meta-analysis of the current evidence base

Journal of Orthopaedics and Traumatology

Official Journal of the Italian Society of Orthopaedics and Traumatology

Table 3 Results of the meta-analysis

Outcome	Studies	Effect estimate	P-value	Heterogeneity
Outcome	Studies	Effect estimate	P-value	I ²	Chi² (P value)
Duration of sick leave	2	3.30 (2.10, 4.50)	<0.0001	NE	NE
Constant score	2	9.70 (1.00, −18.50)	0.03	NE	NE
Throwing ability	3	−0.00 (−0.15, 0.15)	0.98	0	0.57
Strength (≥90% normal)	2	−0.01 (−0.12, 0.11)	0.90	0	0.82
Strength (≤70% normal)	2	0.35 (0.04, 3.51)	0.37	0	0.88
No pain	2	0.90 (0.33, 2.41)	0.83	0	0.60
Severe pain	2	−0.00 (−0.06, 0.06)	0.95	0	0.97
Poor cosmetic outcome	4	−0.79 (−0.92, −0.66)	<0.0001	52	0.10
Tenderness over the acromioclavicular joint	2	0.08 (−0.23, 0.40)	0.61	75	0.05
Implant failure	2	0.04 (−0.05, 0.13)	0.42	0	0.91
Infection	5	0.05 (0.01, 0.09)	0.03	0	0.66
Loss of anatomical reduction	2	0.50 (−1.07, 0.52)	0.50	98	<0.0001
Ossification of the coracoclavicular ligament	2	0.17 (−0.32, 0.66)	0.50	82	0.02
Acromioclavicular joint osteoarthritis	3	0.12 (−0.21, 0.46)	0.46	89	0.001