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Case Reports
. 2019 Jun 21:22:100209.
doi: 10.1016/j.tcr.2019.100209. eCollection 2019 Aug.

Index extensor digitorum communis tendon entrapment in a growth plate injury of distal radius

Hiroyuki Furuya  1   2   3 , Kiyohito Naito  1 , Yoichi Sugiyama  1 , Kenji Goto  1 , Nana Nagura  1 , Yoshio Shimamura  1   2 , Yoshiyuki Iwase  3 , Kazuo Kaneko  1
Affiliations
Case Reports

Index extensor digitorum communis tendon entrapment in a growth plate injury of distal radius

Hiroyuki Furuya et al. Trauma Case Rep. .

Abstract

Background: We report a rare case in which an epiphyseal injury of the distal radius caused entrapment and rupture of the index extensor digitorum communis tendon during conservative treatment.

Case presentation: A 16-year-old girl suffered epiphyseal injury of the right distal radius with palmar displacement during playing judo. Closed reduction and application of a short arm cast were performed. 4 weeks after injury, movement of her index finger was limited. Extensor tendons adhesion at the fracture site was suspected. It was found that the index extensor digitorum communis tendon had become trapped and ruptured at the site of epiphyseal injury, then reconstruction was done by tendon transfer. At 12 months after surgery, the patient had resumed judo at the same level as before the injury.

Conclusions: The present case suggested that there is a risk of extensor tendon entrapment associated with closed reduction.

Keywords: Epiphyseal injury of the distal radius; Extensor digitorum communis tendon; Palmar displacement; Tendon entrapment.

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Conflict of interest statement

None.

Figures

Fig. 1
Fig. 1
Radiographs obtained at the time of injury, showing epiphyseal fracture of the right distal radius with palmar displacement. A: Antero-posterior view. B: Lateral view.
Fig. 2
Fig. 2
Range of wrist motion with the index finger extended and flexed. With the index finger extended, the range of wrist motion was 85°of flexion and 85°of extension (A). With the index finger flexed, the range of wrist motion was 20° of flexion and 85° of extension (B).
Fig. 3
Fig. 3
Preoperative radiographs and CT scan. Radiographs showed healing of the fracture with persistent dorsal displacement of the epiphyseal fragment (A: Antero-posterior view, B: Lateral view). CT clearly showed the displacement (C).
Fig. 4
Fig. 4
Intraoperative findings. A: The index finger EDC tendon was trapped and ruptured at the epiphyseal fracture site. B: Reconstruction of the index finger EDC tendon was done by transfer of its distal end to the middle finger EDC tendon. C: The extensor tendons were protected with extensor retinaculum at the site of epiphyseal injury.
Fig. 5
Fig. 5
Range of wrist motion at 12 months after surgery. With the index finger extended, the range of wrist motion was 75° of flexion (A), 90° of extension (B), 90° of supination (C), and 90° of pronation (D).
See this image and copyright information in PMC

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