Goto Kenji, Naito Kiyohito, Sugiyama Yoichi, Nagura Nana, Kaneko Ayaka, Iwase Yoshiyuki, Kaneko Kazuo
* Department of Orthopaedics, Juntendo University School of Medicine, Tokyo, Japan.
† Department of Orthopaedic Surgery, Juntendo Tokyo Koto Geriatric Medical Center, Tokyo, Japan.
J Hand Surg Asian Pac Vol. 2019 Mar;24(1):72-75. doi: 10.1142/S2424835519500139.
The aim of this study was to assess the height of nonunion formation injuring the ulnar-side finger flexor tendon, the positional relationship between the hook of the hamate and little finger flexor tendon was evaluated on CT scans.
The subjects were 20 healthy patients (40 hands) (14 males and 6 females, mean age: 28 years old). Their hands were imaged in extension and flexion of the fingers on CT. The position of the little finger flexor tendon was determined regarding the height of the hook of the hamate as 100%.
The heights of the flexor digitorum profundus tendons were 46 ± 6% in extension and 44 ± 9% in flexion, and those of the flexor digitorum superficialis tendons were 87 ± 8% in extension and 91 ± 9% in flexion.
Our study suggested that 40% of the base of the hook of the hamate does not contact with the flexor tendon, suggesting that flexor tendon injury is unlikely to occur in that region.
本研究旨在评估尺侧手指屈肌腱损伤处骨不连形成的高度，通过CT扫描评估钩骨钩与小指屈肌腱之间的位置关系。
研究对象为20例健康患者（40只手）（男性14例，女性6例，平均年龄：28岁）。对他们的手在手指伸展和屈曲状态下进行CT成像。以钩骨钩的高度为100%来确定小指屈肌腱的位置。
指深屈肌腱在伸展时的高度为46±6%，在屈曲时为44±9%；指浅屈肌腱在伸展时的高度为87±8%，在屈曲时为91±9%。
我们的研究表明，钩骨钩基部40%的区域不与屈肌腱接触，这表明该区域不太可能发生屈肌腱损伤。
