Hyaluronic Acid Injection Post Arthroscopy - Does it Improve Immediate Function? Double Blind Controlled Prospective Study

The proposed research is to examine the effect of injecting a large volume of HA (10cc) at the time of post arthroscopy suture removal (9-11 day post surgery), in patients with cartilage damage of ICRS grade 2 and above in one of the knee compartments.

Inclusion Criteria:

• Adult Men and Women, who underwent arthroscopy of the knee with cartilage injury of ICRS grade 2 or higher in one of the compartments (in addition to other injuries such as meniscal tear and cruciate ligament).

Exclusion Criteria:

• Patients with known rheumatic disorders.
• Known hypersensitivity to HA.
• Synovial diseases like PVNS, under 18y old.