case_images: PMC6875408_01
case_images: Lateral radiograph at the injury site.
case_images: CRIOR2019-3538405.001.jpg
case_images: PMC6875408_01_CRIOR2019-3538405.001.jpg
case_images: fig1
case_images: The images of plain radiography and computed tomography showed an avulsion fracture of one-third to half of its articular surface at the base of the distal phalanx (Figure 1).
case_images: The radiograph images after reduction and fixation.
case_images: CRIOR2019-3538405.002.jpg
case_images: PMC6875408_01_CRIOR2019-3538405.002.jpg
case_images: fig2
case_images: Using the hook plate technique, open reduction was performed under general anesthesia 19 days after the injury (Figure 2).
case_images: The 1.5 mm mini plate before (a) and after the plate was modified by cutting the hole and bending the ends of crescent arc (b).
case_images: CRIOR2019-3538405.003.jpg
case_images: PMC6875408_01_CRIOR2019-3538405.003.jpg
case_images: fig3
case_images: The fracture was reduced and fixed using a hook plate adapted from a 1.5 mm micro module (KLS Martin, Germany, Figure 3(a)). The ends of the crescent arc were bent approximately 100  by pliers to form two sharp pointed hooks (Figure 3(b)).
case_images: Follow-up radiographs showing the healed fracture.
case_images: CRIOR2019-3538405.004.jpg
case_images: PMC6875408_01_CRIOR2019-3538405.004.jpg
case_images: fig4
case_images: Bone union was achieved and the plate was removed 3 months after the procedure (Figure 4).
case_images: Active range of motion of the IP joint of 8  of extension (a) and 90  of flexion (b).
case_images: CRIOR2019-3538405.005.jpg
case_images: PMC6875408_01_CRIOR2019-3538405.005.jpg
case_images: fig5
case_images: The range of motion on the contralateral side was 85 degrees of flexion and 10 degrees of extension (Figures 5(a) and 5(b)).
case_images: Transverse line deformity of the nail that gradually disappeared.
case_images: CRIOR2019-3538405.006.jpg
case_images: PMC6875408_01_CRIOR2019-3538405.006.jpg
case_images: fig6
case_images: The patient had a transverse line nail deformity (Figure 6) that gradually improved.