Bilateral discoid medial menisci accompanied by distal arthrogryposis: a case report.

Discoid meniscus shows a propensity for the lateral side, and bilateral discoid medial meniscus is extremely rare. The present patient had a history of windblown hand and clubfoot, and bilateral discoid medial meniscus was associated with distal arthrogryposis. There has been no previous case report about the coexistence of meniscal abnormalities and distal arthrogryposis. While the association between distal arthrogryposis and meniscal abnormalities is unknown, it is interesting that discoid medial meniscus (a rare meniscus abnormality) occurred in the presence of arthrogryposis. We performed bilateral arthroscopic partial meniscectomy (reshaping) to treat discoid meniscus in this case, and the patient used outer wedge arch supports postoperatively. Neither relapse of meniscal symptoms nor arthrosis has occurred postoperatively in this patient, but long-term follow-up is considered to be necessary.