Table 3. Clinical and functional outcome scores in single- and two-portal groups.

		Total (n=71)		Single anterior portal (n=32)			Double anterior portals (n=39)
Evaluation method	n	%	Mean±SD	n	%	Mean±SD	n	%	Mean±SD	p
Follow-up period (month)			35.3±11.5			32.0±7.4			38.0±13.4	0.222
Length of hospital stay (day)			1.28±0.48			1.2±0.4			1.41±0.56	0.059
Daily sports activity (h)										0.400
Preoperative			0.8±0.4			0.8±0.4			0.9±0.4	0.270
Postoperative			1.5±0.7			1.4±0.7			1.5±0.6
p			<0.001			<0.001			<0.001
VAS score										0.302
Preoperative			4.6±1.3			4.5±1.6			4.8±1.0	0.190
Postoperative			1.0±1.0			0.9±1.0			1.2±1.0
p			<0.001			<0.001			<0.001
ASES score										0.186
Preoperative			61.6±6.8			60.3±6.3			62.7±7.1	0.313
Postoperative			87.4±10.8			88.4±11.3			86.6±10.5
p			<0.001			<0.001			<0.001
UCLA score										0.446
Preoperative			18.7±3.5			19.3±2.9			18.3±3.8	0.248
Postoperative			31.5±4.4			30.8±4.7			32.2±4.1
p			<0.001			<0.001			<0.001
CM score										0.299
Preoperative			56.6±7.1			55.9±6.5			57.2±7.5	0.125
Postoperative			89.7±10.5			88.3±9.8			90.9±11.1
p			<0.001			<0.001			<0.001
Oxford instability score										0.310
Preoperative			23.2±4.9			23.0±6.1			23.4±3.8	0.203
Postoperative			43.0±6.1			43.6±6.2			42.5±6.1
p			<0.001			<0.001			<0.001
Rowe score										0.805
Preoperative			51.1±9.4			50.6±8.2			51.5±10.5	0.318
Postoperative			89.6±11.5			88.7±10.7			90.3±12.3
p			<0.001			<0.001			<0.001
External rotation restriction										0.065
Preoperative			16.6±6.2			18.2±5.3			15.3±6.6	0.083
Postoperative			8.5±6.4			7.0±5.9			9.7±6.5
p			<0.001			<0.001			<0.001
Recurrent instability										0.622
No	67	94.4		31	96.6		36	92.3
Yes	4	5.6		1	3.1		3	7.7
SD: Standard deviation; VAS: Visual Analog Scale; ASES: American Shoulder and Elbow Surgeons Standardized Shoulder Assessment Form; UCLA: University at California at Los Angeles Shoulder Rating Scale; CM: Constant-Murley. Bolded p values indicate statistically significant differences between groups (p<0.05).