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

Table 4

Measurement of VAS pain scores (mean ± SD).

Group	N	Before treatment	1 week later	2 weeks later	3 weeks later
PN	34	7.12 ± 1.44	5.31 ± 1.76	4.34 ± 1.71	3.41 ± 1.39
SN	34	7.21 ± 1.45	6.76 ± 1.56	5.78 ± 1.85	5.02 ± 1.76

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