Ball and socket ankle joint in connection with bilateral tarsal synostosis in a boy with congenital absence of the portal vain: a novel malformation complex.
Zandieh S, Vakli-Adli A, Hochreiter J, Grill F, Klaushofer K, Al Kaissi A.
Cases J. 2008 Aug 8;1(1):76. doi: 10.1186/1757-1626-1-76.
PMID:18691395
The ball and socket ankle joint; a congenital abnormality.
LAMB D.
J Bone Joint Surg Br. 1958 May;40-B(2):240-3. doi: 10.1302/0301-620X.40B2.240.