Table 1.

Theories of origin of Adamantinoma

Theory	Authors, year
1. Fetal crest	Fischer, 1913 [4]
2. Basal cell lineage, Trauma	Ryrie, 1932 [6]
3. Implantation	Dockerty and Meyerding, 1942 [7]
4. Unknown	Baker et al, 1954 [8]
5. Synovial cell like	Lederer and Sinclair, 1954 [9], Naji et al 1964 [10]
6. Angioblastic	Changus et al, 1957, Elliot 1962, Llombart bosch and Ortuno-pacheco, 1978, Reed, 1982 [11-14]
7. Mesenchymal	Vinogradova, 1969 [15]
8. Dermal inclusion	Lichtenstein, 1977 [16]
9. Epithelial cell	Jaffe, 1958, Saacebra et al, 1968, Rosai and Pincus,1982, Ishida et al,1992, Hazelbag et al, 1993, Jundt et al, 1995 [17-22]