Open AccessKirner's deformity of the fifth finger
Author(s) -
Tao Ma,
Dongyue Wang,
Lanying Song
Publication year - 2020
Publication title -
medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.59
H-Index - 148
eISSN - 1536-5964
pISSN - 0025-7974
DOI - 10.1097/md.0000000000022294
Subject(s) - medicine , deformity , phalanx , physis , hand deformity , surgery , little finger , kirschner wire , tendon , brace , fixation (population genetics) , thumb , internal fixation , radiography , mechanical engineering , population , environmental health , engineering
Rationale: Kirner's deformity is an uncommon deformity of finger, characterized by palmo-radial curvature of distal phalanx of the fifth finger. The specific mechanism remains unknown yet. This study aims to present a case report to add the knowledge on this type of deformity. Patient concerns: A 9-year-old girl presenting with deformity of her fifth finger since she was born was admitted to our hand surgery clinic. MRI findings showed widened epiphyseal plate, L-shaped physis, but normal flexor digitorum profundus tendon insertion, without any significantly enhanced soft issues. Diagnosis: Kirner's deformity of the fifth finger. Interventions: We presented 2 surgical choices for the patient: one was wedge osteotomy of the distal phalanx to correct the mechanical line of the distal phalanx and fixation with Kirschner wire and the other one was cut-off of deep flexor tendon insertion with brace immobilization, but her guardians refused either of them. Outcomes: Consecutive follow-up was performed for 19 months after the first visit, showing no any change in finger shape and function. Lessons: The L-shaped epiphyses may be the cause of Kirner's deformity and further attention should be paid on in the clinic. This case report provided a basis for the etiological diagnosis and future treatment of Kirner's deformity.