OCAD MSK

History

72 y/o M with all over knee pain. No known trauma. R/O meniscus tear.

Figure 1 for case Root attachment tear of the posterior horn of the lateral meniscus (RID2763) — Figure 1

Figure 2 for case Root attachment tear of the posterior horn of the lateral meniscus (RID2763) — Figure 2

Figure 3 for case Root attachment tear of the posterior horn of the lateral meniscus (RID2763) — Figure 3

Figure 4 for case Root attachment tear of the posterior horn of the lateral meniscus (RID2763) — Figure 4

Figure 5 for case Root attachment tear of the posterior horn of the lateral meniscus (RID2763) — Figure 5

Discussion

Much more common to see these medially. These can be mimicked by magic angle but magic angle alone wont result in the irregularity seen here. Also there is some peripheral subluxation of the meniscus suggesting instability. Lateral root tears commonly occur with knee ligament sprains and tears. This patient had a chronic partial tear of the ACL (not shown) Reference article.

Diagnosis

Root attachment tear of the posterior horn of the lateral meniscus (RID2763)

Phillip Tirman, MD

Courtesy

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