Objective:To compare the clinical effects of ultrasound-guided intra-articular and coracohumeral ligament glucocorticoid injections versus ultrasound-guided intra-articular glucocorticoid injections alone on frozen shoulder in the elderly.Methods:A total of 44 patients with frozen shoulder admitted to the rehabilitation department of the Affiliated Hospital of Sichuan Nursing Vocational College from September 2019 to June 2020 were enrolled.They were randomly divided into the experimental group and the control group, with 22 patients in each group.The experimental group received two consecutive ultrasound-guided intra-articular injections and two coracohumeral ligament injections, while the control group received two consecutive ultrasound-guided intra-articular injections.The shoulder's passive range-of-motion(PROM), the 11-point numeric rating scale(NRS)as well as the Shoulder Pain and Disability Index(SPADI)were conducted before treatment, 1 week after the first treatment(1 week), 1 week after the second treatment(2 weeks)and 10 weeks after the second treatment(12 weeks).Results:There was no significant difference in baseline characteristics between the two groups(all P>0.05). Flexion, abduction, extension and external rotation increased whereas NRS and SPADI decreased after treatment, compared with pre-treatment in the experimental group( F=11.341, 20.965, 20.403, 32.470, 82.970 and 102.154, all P<0.05)and in the control group( F=7.012, 8.937, 23.265, 31.966, 52.500 and 41.356, all P<0.05). Compared with the control group, extension( t=0.365, 0.143 and 0.236, all P<0.05)and external rotation( t=0.205, 0.620 and 2.751, all P<0.05)increased at 1, 2 and 12 weeks after treatment.SPADI scores were lower in the experimental group than in the control group at 12 weeks after treatment( t=2.063, P=0.045). There was no significant difference in NRS, flexion or abduction between the two groups at any time point after treatment(all P>0.05). No serious adverse reactions occurred during treatment in either group. Conclusions:Both ultrasound-guided intra-articular injections plus coracohumeral ligament injections and ultrasound-guided intra-articular injections can effectively alleviate pain and improve function in elderly patients with frozen shoulder, but the former has better effects on extension.For patients with clear restricted extension and external rotation, ultrasound-guided intra-articular injections combined with coracohumeral ligament injections may achieve better clinical effects.