Mediolateral Differences of Proteoglycans Distribution at the ACL Tibial Footprint: Experimental Study of 16 Cadaveric Knees

Figure 5

Staining pattern and collagen organization of three different zones (1, 3, and 5) in high power field view. (a) Note the strong staining pattern to PG and cuboid basketweave arrangement of collagen fibres with densely packed round shaped fibrocartilage cell (FC). (b) Zone 3 shows the staining pattern of longitudinal collagen organization parallel to fiber orientation with fewer FC and lower peak color of staining compared to zone 1. (c) Zone 5 shows the staining pattern of scarce interspersed FC and disorganized collagen orientation with staining only at the adjacent area of the tibial footprint.

(a)

(b)

(c)