Table 1.

The accuracy of the injections

	No leakage	Minor leakage	Major leakage	Total
Right	94 (91.3%)	7 (6.8%)	2 (1.9%)	103
Left	69 (90.1%)	3 (3.9%)	4 (5.3%)	76
Total	163 (91.0%)	10 (5.6%)	6 (3.4%)	179

No leakage: Injection into the glenohumeral joint without any leakage; Minor leakage: Practical intra-articular right shoulder injection; however, another magnetic resonance arthrography image shows the presence of some leakage outside the posterior cuff; Major leakage: Inaccurate injection into the glenohumeral joint with a noted mass leakage. Right: Right shoulders; Left: Left shoulders.