Biomechanical Analysis of Serious Neck Injuries Resulting from Judo

Nakanishi, Tomoyuki and Hitosugi, Masahito and Murayama, Haruo and Takeda, Arisa and Motozawa, Yasuki and Ogino, Masahiro and Koyama, Katsuhiro (2021) Biomechanical Analysis of Serious Neck Injuries Resulting from Judo. Healthcare, 9 (2). p. 214. ISSN 2227-9032

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Abstract

To establish a basis for initial diagnosis and for proposing preventive measures for the serious neck injuries occasionally experienced by judo practitioners, the biomechanical mechanisms of these injuries were analyzed. Two male judo experts repeatedly threw an anthropomorphic test device (POLAR dummy) using three throwing techniques (Seoi-nage, Osoto-gari, and Ouchi-gari). The dummy’s kinematic data were captured using a high-speed digital camera, and the load and moment of the neck were measured with load cells. The neck injury criterion (Nij) and beam criterion were also calculated. In Seoi-nage, the anterior and parietal regions of the dummy’s head contacted the tatami (judo mat). Subsequently, most of the body weight was applied, with the neck experiencing the highest compression. However, in Osoto-gari and Ouchi-gari, the occipital region of the dummy’s head contacted the tatami. Significantly higher values of both Nij (median 0.68) and beam criterion (median 0.90) corresponding to a 34.7% to 37.1% risk of neck injury with an abbreviated injury scale score ≥2 were shown in Seoi-nage than in either Ouchi-gari or Osoto-gari. In judo, when thrown by the Seoi-nage technique, serious neck injuries can occur as a result of neck compression that occurs when the head contacts the ground.

Item Type: Article
Subjects: European Scholar > Medical Science
Depositing User: Managing Editor
Date Deposited: 14 Dec 2022 12:34
Last Modified: 02 Oct 2024 07:53
URI: http://article.publish4promo.com/id/eprint/559

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