Disclosed are conjugates between stanozolol and hyaluronic acid or a hyaluronic acid salt, characterised in that stanozolol is conjugated with the carboxyl group of hyaluronic acid or the hyaluronic acid salt via a spacer that forms an ester bond with the hydroxyl group of stanozolol and an ester or amide bond with the carboxyl group of hyaluronic acid or the hyaluronic acid salt. The conjugates according to the invention are useful to prepare hydrogels, injectable hydrogels, hydrogels for external use, creams, lotions, foams, aqueous solutions for intra-articular use, emulsions for ophthalmic use, eyedrops, scaffolds, artificial tissues and culture media.