An isolated monoclonal antibody or antigen binding fragment thereof, comprising a heavy chain variable region comprising a heavy chain complementarity determining region (HCDR)1, a HCDR2, and a HCDR3, and a light chain variable region comprising a light chain complementarity determining region (LCDR)1, a LCDR2, and a L-CDR3, of the amino acid sequences set forth as: (a) SEQ ID NO: 1 and SEQ ID NO: 2, respectively (clone 13); (b) SEQ ID NO: 3 and SEQ ID NO: 4, respectively (clone 22); or (c) SEQ ID NO: 5 and SEQ ID NO: 6, respectively (clone 26); and wherein the monoclonal antibody or antigen binding fragment specifically binds to matrilin-3, and wherein: (a) the HCDR1, HCDR2, and HCDR3 comprise the amino acid sequences set forth as residues 26-33, 51-58, and 97-106 of SEQ ID NO: 1, respectively, and the LCDR1, LCDR2, and LCDR3 comprise the amino acid sequence set forth as residues 27-32, 50-52, and 89-97 of SEQ ID NO: 2, respectively; (b) the HCDR1, HCDR2, and HCDR3 comprise the amino acid sequences set forth as residues 26-33, 53-61, and 100-109 of SEQ ID NO: 3, respectively, and the LCDR1, LCDR2, and LCDR3 comprise the amino acid sequence set forth as residues 26-31, 49-51, and 88-97 of SEQ ID NO: 4 respectively; or (c) the HCDR1, HCDR2, and HCDR3 comprise the amino acid sequences set forth as residues 26-33, 51-58, 97-108 of SEQ ID NO: 5, respectively, and the LCDR1, LCDR2, and LCDR3 comprise the amino acid sequence set forth as residues 26-33, 51-53, and 90-100 of SEQ ID NO: 6, respectively. (a) SEQ ID NO: 1 and SEQ ID NO: 2, respectively (clone 13); (b) SEQ ID NO: 3 and SEQ ID NO: 4, respectively (clone 22); or (c) SEQ ID NO: 5 and SEQ ID NO: 6, respectively (clone 26); and wherein the monoclonal antibody or antigen binding fragment specifically binds to matrilin-3, and wherein: (a) the HCDR1, HCDR2, and HCDR3 comprise the amino acid sequences set forth as residues 26-33, 51-58, and 97-106 of SEQ ID NO: 1, respectively, and the LCDR1, LCDR2, and LCDR3 comprise the amino acid sequence set forth as residues 27-32, 50-52, and 89-97 of SEQ ID NO: 2, respectively; (b) the HCDR1, HCDR2, and HCDR3 comprise the amino acid sequences set forth as residues 26-33, 53-61, and 100-109 of SEQ ID NO: 3, respectively, and the LCDR1, LCDR2, and LCDR3 comprise the amino acid sequence set forth as residues 26-31, 49-51, and 88-97 of SEQ ID NO: 4 respectively; or (c) the HCDR1, HCDR2, and HCDR3 comprise the amino acid sequences set forth as residues 26-33, 51-58, 97-108 of SEQ ID NO: 5, respectively, and the LCDR1, LCDR2, and LCDR3 comprise the amino acid sequence set forth as residues 26-33, 51-53, and 90-100 of SEQ ID NO: 6, respectively. (a) the HCDR1, HCDR2, and HCDR3 comprise the amino acid sequences set forth as residues 26-33, 51-58, and 97-106 of SEQ ID NO: 1, respectively, and the LCDR1, LCDR2, and LCDR3 comprise the amino acid sequence set forth as residues 27-32, 50-52, and 89-97 of SEQ ID NO: 2, respectively; (b) the HCDR1, HCDR2, and HCDR3 comprise the amino acid sequences set forth as residues 26-33, 53-61, and 100-109 of SEQ ID NO: 3, respectively, and the LCDR1, LCDR2, and LCDR3 comprise the amino acid sequence set forth as residues 26-31, 49-51, and 88-97 of SEQ ID NO: 4 respectively; or (c) the HCDR1, HCDR2, and HCDR3 comprise the amino acid sequences set forth as residues 26-33, 51-58, 97-108 of SEQ ID NO: 5, respectively, and the LCDR1, LCDR2, and LCDR3 comprise the amino acid sequence set forth as residues 26-33, 51-53, and 90-100 of SEQ ID NO: 6, respectively. <EOS>