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14,15,16,17,18 However, these advanced restorative techniques still present increased failure rates in knees with common comorbidities (larger lesion size, kissing lesions on opposing articular surfaces, and pre-existing arthritic changes)

in the mid-1930s [26], (b) produced mainly by fibroblasts [27], (c) to date consists of 28 types, numbered from IXXVIII, constituting about 8090% (type I) and 1015% (type III) in human skin [27], (d) provides tensile strength and elasticity to withstand mechanical forces in everyday activities [26,27,28,29], and (e) mainly composed of the amino acids glycine (Gly), proline (Pro), and hydroxyproline (Hyp), along with its typical triple-helix structure [26, 27, 29]

doi: 10.1007/s00702-012-0894-8 51 GarritsenO.van BattumE

PMID:39947440

They share conserved seven -helical structured transmembrane domains, extracellular ligand-binding domains, and carboxy-terminal intracellular domains