Hirasawa Y, Sawamura H, Sakakida K
J Hand Surg Am. 1979 Mar;4(2):181-4. doi: 10.1016/s0363-5023(79)80139-2.
A case of bilateral entrapment of the ulnar nerves due to accessory epitrochleoanconeus muscles was observed in a young athlete. Hypertrophy of this muscle may be one of the causes of cubital tunnel syndrome.