title: Delayed diagnosis of an isolated posterolateral corner injury: a case report.
abstract: BACKGROUND
  Isolated injuries to the posterolateral corner of the knee are a rare and commonly missed injury associated with athletic trauma, motor vehicle accidents, and falls. Delayed or missed diagnoses can negatively impact patient prognosis, contributing to residual instability, chronic pain, and failure of surgical repair to other ligaments.
  
  
  METHODS
  A 44-year-old male CrossFit athlete presented with a history of two non-contact hyperextension injuries to his left knee while walking on ice. The only positive finding was the Dial Test at 30 degrees of knee flexion, indicative of an isolated posterolateral corner injury. After a delay in diagnosis, the patient underwent a reconstruction of the posterolateral corner and subsequent rehabilitation. Early recognition of this injury is important as this can affect the prognosis and activities of daily living of the patient.
  
  
  CONCLUSIONS
  This case will discuss the clinical presentation, diagnostic procedures, and management of an isolated posterolateral corner injury and highlight the importance of early recognition and referrals from primary contact healthcare practitioners.
authors.affiliation: Canadian Memorial Chiropractic College, 6100 Leslie Street, Toronto, Ontario; Sports Sciences Resident, Division of Graduate Studies, Canadian Memorial Chiropractic College.
authors.forename: Patrick
authors.initials: P
authors.lastname: Welsh
authors.affiliation: Canadian Memorial Chiropractic College, 6100 Leslie Street, Toronto, Ontario.
authors.forename: Christopher
authors.initials: C
authors.lastname: DeGraauw
authors.affiliation: Body Works, Charlottetown, PEI.
authors.forename: David
authors.initials: D
authors.lastname: Whitty
keywords: Dial test; chiropractic; knee; posterolateral corner injury; rehabilitation