Abstract
Recent literature has reported an uncategorized hyperplantarflexion variant ankle
fracture characterized by a posteromedial fragment separate from the posterior or
medial malleolar fragments. The current study sought to determine whether the outcomes
for surgically treated hyperplantarflexion variant fractures are similar to the more
common supination external rotation (SER) IV fractures. A prospective registry of
operatively treated ankle fractures was queried to create 2 age- and gender-matched
cohorts: hyperplantarflexion variant and SER IV fractures. Each cohort had 23 patients
(18 females), and matched pairs were within 2 years of age at the date of surgery.
Patient demographics, comorbidities, and Foot and Ankle Outcomes Scores at minimum
12 months after the index surgery were compared. The cohorts were similar with respect
to body mass index, the length of the clinical follow-up, medical comorbidities, dislocation
rate, and postoperative articular incongruity (p > .05). Patient-reported outcomes demonstrated no statistically or clinically significant
differences within any domain and were as follows: symptoms (70.8 versus 77.8, p = .11), pain (80.7 versus 85.0, p = .33), activities of daily living (83.7 versus 89.2, p = .23), sports (67.4 versus 73.4, p = .33), and quality of life (57.3 versus 63.9, p = .24) for the hyperplantarflexion and SER IV groups, respectively. No significant
differences were found in the rang`e of motion for dorsiflexion (17.7° versus 18.1°, p = .52) or for plantarflexion (48.6° versus 47.1°, p = .71). Patients treated surgically for hyperplantarflexion variant ankle fractures
have similar 1-year clinical outcomes when compared with the more common SER IV fracture
patterns, provided that the injury is correctly identified preoperatively and treated
appropriately.
Level of Clinical Evidence
Keywords
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Article info
Publication history
Published online: April 06, 2019
Footnotes
Financial Disclosure: None reported.
Conflict of Interest: None reported.
Identification
Copyright
© 2018 by the American College of Foot and Ankle Surgeons. All rights reserved.
