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 In Office Knee Injection Technique: Tips for Success Intra Articular Injection Of Peptides For Joint Pain BPC 157 And TB 500 for Arthritis Exogenous Peptide Injection Causing Medical Thigh Compartment Syndrome ScienceDirect Musculoskeletal Injection Therapy: Part 1 Springer Nature Link Stable Gastric Pentadecapeptide BPC 157 as Therapy After Surgical Detachment of the Quadriceps Muscle from Its Attachments for Muscle to Bone Reattachment in Rats