The rotation is made with the foot blocked on the ground with associated lesions of the medial or lateral compartment depending on the direction of rotation: this mechanism is the source of fibrous impingement and probably certain osteochondral lesions of the talar dome and can also involve tibiofibular syndesmosis. Forced plantar flexion due to catching the forefoot produces lesions of the anterior fibers of the lateral and medial collateral ligaments as well as the anterior capsule, with possible lesions extended to the tarsometatarsal joint.