Table 1

 Summary of the immunohistochemical labelling characteristics of the entheses associated with the lateral and medial epicondyles

CollagensGlycosaminoglycansProteoglycans and glycoproteins
IIIIIIVIKSDS, C4SC4SC6SAggLinkVersicanTenascin
The figures indicate the number of specimens (maximum six) in which positive labelling was seen. There was no distinction between the labelling patterns of the calcified and uncalcified zones of fibrocartilage with any antibody, but only the outer (and not the inner) part of the zone of uncalcified fibrocartilage labelled for type I collagen, versican, and tenascin in the lateral epicondylar entheses*.
Agg, aggrecan; C4S, chondroitin-4-sulphate; C6S, chondroitin-6-sulphate; DS, dermatan sulphate; KS, keratan sulphate; Link, link protein.
Lateral epicondyle
Tendon attachment
    Bone matrix600600000000
    Fibrocartilage6*6666666666*6*
    Fibrous zone636666643364
Ligament attachment
    Bone matrix600600000000
    Fibrocartilage6*6666666666*6*
    Fibrous zone636666643364
Medial epicondyle
Tendon attachment
    Bone matrix600600000000
    Fibrocartilage666666666666
    Fibrous zone636666632364
Ligament attachment
    Bone matrix600600000000
    Fibrocartilage666666666666
    Fibrous zone636666612364