Abstract: The disclosure provides a use of hydrogel composition for alleviating degenerative joint and tendon tear. The hydrogel composition includes 100 parts by weight of therapeutic agent and 120-380 parts by weight of biodegradable copolymer, wherein the therapeutic agent comprises platelet-rich plasma (PRP), doxorubicin, transforming growth factor, bovine serum albumin, or a combination thereof. The biodegradable copolymer has a structure of Formula (I) or Formula (II): wherein A is a hydrophilic polyethylene glycol polymer; B is a hydrophobic polyester polymer; BOX is a bifunctional group monomer of 2, 2?-bis(2-oxazoline) used for coupling the blocks A-B or B-A-B; and n is 0 or an integer greater than 0.

Abstract: The disclosure provides a powder form and a hydrogel composition for alleviating degenerative joint and tendon tear. The powder form consists essentially of a 120-380 parts by weight biodegradable copolymer; 15-75 parts by weight urea; and 100 parts by weight platelet-rich plasma; wherein the biodegradable copolymer has a structure of formula (I) or formula (II): wherein A comprises a hydrophilic polyethylene glycol polymer; B comprises a hydrophobic polyester polymer; BOX is bifunctional group monomer of 2, 2?-bis(2-oxazoline) used for coupling the blocks AB or BAB; and n is an integer greater than or equal to 0.