Table 1.

Studies that show percentage of positive P. acnes found in shoulder surgery

Study	Type of surgery	No. of patients	No. of infections	No. of P. acnes infection (%)
HereSingh et al. [15•]	Primary anatomic shoulder arthroplasty	2588	32	6 (1.23)
Singh et al. [16]	Primary hemiarthroplasty	1431	14	3 (0.21)
Athwal et al. [4]	Rotator cuff repair	4886	39	20 (0.41)
Topolski et al. [5]	Revision shoulder arthroplasty	439	85	45 (10.3)
Pottinger et al. [19]	Revision shoulder arthroplasty	193	108	75 (38.7)
Kwon et al. [20]	Rotator cuff repair	1904	14	7 (0.36)
Grosso et al. [21••]	Revision shoulder arthroplasty	45	30	18 (40)
Coste et al. [22]	Arthroplasties	2343	49	7 (0.29)
Herrera et al. [23]	Mini open rotator cuff repair	360	7	6 (1.66)
Levy et al. [24]	Shoulder surgery	276	16	9 (3.26)
Kelly et al. [25]	Revision shoulder arthroplasty	28	8	6 (21.4)
Zheng et al. [26]	Shoulder arthroplasties	NA	18	8 (44.4)
Mirzayan et al. [27]	Open rotator cuff infections	NA	13	3 (23.1)