Effect of repetitive instep kick on ankle plantar flexion angle on ball impact

Junpei Sasadai, Yukio Urabe, Noriaki Maeda, Hiroshi Shinohara, Eri Fujii & Satoshi Takai
Objective: Os trigonum syndrome, known as posterior ankle impingement syndrome, is caused by repetitive stress from ankle plantar flexion due to kicking in soccer players. Our recent study showed that the angle of maximal ankle plantar flexion angle on ball impact does not exceed that of passive plantar[for full text, please go to the a.m. URL]