Peptide Therapy for Pain Management and Healing Core Medical & Wellness Can peptide injections help people recover from injuries? Here's what you need to know Gannon Buhr is off to a rough start this season. The world's top disc golfer is dealing with neck pain, which he says has been an issue for months. Gel injections for the knee involve the injection of a gel like substance into the knee joint to provide lubrication and cushioning. This treatment is often used to alleviate pain and improve mobility