This pilot study will evaluate the clinica! and radiological results of a treatment for knee osteoarthritis with injections of autologous concentrated bone marrow aspirate at the bone-cartilage interface via percutaneous.

This pilot study (N=30) patients will evaluate the clinica! and radiological results of a treatment for knee osteoarthritis with injections of bone marrow concentrate (BMC),obtained from the Bone Marrow Aspirate Concentration System (BioCUE) at the bone-cartilage interface via percutaneous injections. The PerFuse system will also be evaluated to determine if it can be used to deliver the BMC to the osseous sites. Follow-up is 1, 3, 6, 12, and 24 months.

Inclusion Criteria:

• age ranging from 40 to 75
• Osteoarthritis of the medial or lateral compartment (2-3-4 grade according to the Kellgren-Lawrence score);
• Failure after at least 6 months of conservative treatment (drug therapy with NSAIDs,hyaluronic acid,platelet-rich plasma and corticosteroids injections);
• Signature of informed consent.

Exclusion Criteria:

• Patients with trauma in the 6 months prior to the intervention;
• Patients with malignancies;
• Patients with rheumatic diseases;
• Patients with diabetes;
• Patients suffering from metabolic disorders of the thyroid;
• Patients being abuse of alcohol, drugs or medications;
• Body Mass Index> 35;