Dynamic close-mouth view radiograph method for the diagnosis of lateral dynamic instability of the atlantoaxial joint

Fujiwara, Susumu; Tokunaga, Daisaku; Oda, Ryo; Toyama, Shogo; Imai, Kan; Doi, Atushi; Kubo, Toshikazu

doi:10.1016/j.clinimag.2009.08.027

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Volume 34, Issue 5 , Pages 375-378, September 2010

Dynamic close-mouth view radiograph method for the diagnosis of lateral dynamic instability of the atlantoaxial joint

Susumu Fujiwara
- Department of Radiological Technology, Kyoto Takeda Hospital, Minamikoromoda-cho, Nishi-shichijo, Shimogyo-ku, Kyoto 600-8884, Japan
Daisaku Tokunaga
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
- Corresponding author. Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto, 602-8566, Japan. Tel.: +81 75 251 5549; fax: +81 75 251 5841.
Ryo Oda
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
Shogo Toyama
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
Kan Imai
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan
Atushi Doi
- Department of Radiological Technology, Kyoto Takeda Hospital, Minamikoromoda-cho, Nishi-shichijo, Shimogyo-ku, Kyoto 600-8884, Japan
Toshikazu Kubo
- Department of Orthopaedics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamigyo-ku, Kyoto 602-8566, Japan

Received 3 July 2009; accepted 15 August 2009. published online 05 October 2009.

Abstract

The purpose of the current study is to establish the dynamic close-mouth view radiograph method. Seven healthy volunteers were enrolled. Dynamic open-mouth and close-mouth view radiographs were obtained. The odontoid lateral mass interval and the dynamic atlantodental lateral shift (ADLS) were measured. The ADLS was 9.4±5.3% by the close-mouth view, showing a significantly greater percentage than that of 5.3±4.0% by the open-mouth view. The dynamic close-mouth view can be useful for diagnosis of atlantoaxial lateral instability.

Keywords: Cervical spine, Open-mouth view, Close-mouth view, Atlantoaxial subluxation, Instability