title: Changes in active ankle dorsiflexion range of motion after acute inversion ankle sprain.
abstract: BACKGROUND
  Posterior calf stretching is believed to improve active ankle dorsiflexion range of motion (AADFROM) after acute ankle-inversion sprain.
  
  
  OBJECTIVE
  To describe AADFROM at baseline (postinjury) and at 2-wk time periods for 6 wk after acute inversion sprain.
  
  
  METHODS
  Randomized trial.
  
  
  METHODS
  Sports clinic.
  
  
  METHODS
  11 men and 11 women (age range 11-54 y) with acute inversion sprain.
  
  
  METHODS
  Standardized home exercise program for acute inversion sprain.
  
  
  METHODS
  AADFROM with the knee extended.
  
  
  RESULTS
  Time main effect on AADFROM was significant (F3,57 = 108, P < .001). At baseline, mean active sagittal-plane motion of the ankle was 6 degrees of plantar flexion, whereas at 2, 4, and 6 wk AADFROM was 7 degrees, 11 degrees, and 11 degrees, respectively.
  
  
  CONCLUSIONS
  AADFROM increased significantly from baseline to week 2 and from week 2 to week 4. Normal AADFROM was restored within 4 wk after acute inversion sprain.
authors.affiliation: Program in Physical Therapy, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: James W
authors.initials: JW
authors.lastname: Youdas
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: McLean
authors.forename: David A
authors.initials: DA
authors.lastname: Krause
authors.forename: John H
authors.initials: JH
authors.lastname: Hollman
mesh_terms: D000293:Adolescent; D000328:Adult; D000704:Analysis of Variance; D016512:Ankle Injuries / Q000503:physiopathology / Q000534:rehabilitation*; D000843:Ankle Joint / Q000502:physiology*; D053587:Arthrometry, Articular; D001265:Athletic Injuries / Q000503:physiopathology / Q000534:rehabilitation*; D001696:Biomechanical Phenomena; D002648:Child; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D052580:Muscle Stretching Exercises; D018482:Muscle, Skeletal / Q000502:physiology; D016059:Range of Motion, Articular / Q000502:physiology*; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult