Effect of Different Hyaluronic Acids in the Treatment of Subdeltoid Bursitis

The study employs a double-blind, randomized clinical trial design with 50 patients diagnosed with subdeltoid bursitis. Participants are divided into two groups: ultra-high-molecular-weight hyaluronic acid or high-molecular-weight hyaluronic acid injection. All injections are guided by ultrasound. Assessments are conducted before treatment and at 1 week, 1 month, and 3 months post-treatment.