Familial Discoid Medial Meniscus Tear in Three Members of a Family: A Case Report and Review of Literature

Table 1

Reports of discoid medial meniscus since 2001.

Authors	Date	Number of cases	Age (years)	Arthroscopic findings
Choi et al. [7]	2001	2	18 and 31 years	Incomplete discoid meniscus on the medial and lateral sides
Yáñez-Acevedo [8]	2001	1	11 years	Bilateral discoid lateral meniscus and unilateral discoid medial meniscus with complete medial meniscus tear
Tachibana et al. [9]	2003	4	59, 33, 51, and 39 years	(i) Bilateral discoid medial meniscus and unilateral discoid lateral meniscus; (ii) Unilateral medial and lateral discoid meniscus; (iii) Two cases of bilateral medial and lateral discoid meniscus
Kim and Seo [10]	2006	1	22 years	Complete discoid medial meniscus in one knee and partial discoid medial meniscus in the other
Lee et al. [11]	2007	3	Unknown	Bilateral discoid medial menisci with abnormal attachment to the ACL
Kim and Lubis [12]	2010	1	44 years	Bilateral medial and lateral discoid menisci with anomalous insertion to the ACL
Flouzat-Lachaniette; et al. [4]	2011	4	13–28 years	Partial discoid medial meniscus tears (2 horizontal tears, 1 anterior tear, and 1 vertical tear)
Cho [13]	2011	1	Unknown	Bilateral discoid medial meniscus with attachment to the ACL
Chen et al. [3]	2013	13	11–53 years	(i) Seven complete discoid medial menisci, 6 partial discoid medial menisci, 0 Wrisberg variants,; 3 bucket-handle tears, 4 vertical tears, 4 horizontal tears, and 2 complex tears
Zhang et al. [14]	2013	1	27 years	Partial discoid medial meniscus tear with a complex horizontal tear
Chen et al. [15]	2012	1	13 years	Partial discoid medial meniscus tear with horizontal cleavage tear