Outcomes of Visualized Puncture Needle and Small Needle-Knife Therapy in Primary Frozen Shoulder Based on Multimodal Ultrasound Imaging

Table 5

Comparison of muscle thickness measured by ultrasound elastography (mm, mean ± SD).

	Group	N	Before treatment	1 week later	2 weeks later	3 weeks later
Supraspinatus muscle	PN	34	12.54 ± 0.76	13.51 ± 0.71	14.26 ± 0.74	15.45 ± 0.69
	SN	34	12.58 ± 0..68	12.99 ± 0.69	13.58 ± 0.72	13.76 ± 0.63
Infraspinatus muscle	PN	34	16.37 ± 0.59	16.97 ± 0.60	17.37 ± 0.65	18.87 ± 0.66
	SN	34	16.85 ± 0.61	16.84 ± 0.65	16.95 ± 0.68	17.05 ± 0.62

Note: “★”: compared with the situation before treatment, . “▲”: compared with the control group, .