Abstract: The present disclosure relates to an ultrasound guided intraarticular administration of a combination of a composition comprising pooled mesenchymal stromal cells, and mid molecular weight hyaluronic acid for treatment of osteoarthritis. The disclosure also provides methods for increasing levels of anti-inflammatory marker and decreasing levels of disease progression marker in a human subject suffering from osteoarthritis through the use of the said combination. The present disclosure accordingly also relates to a kit comprising the said composition and the hyaluronic acid as such for the said use and treatment.