title: Effect of pelvic, hip, and knee position on ankle joint range of motion.
abstract: OBJECTIVE
  To determine if pelvic posture, hip, and knee positions influence range of motion about the ankle joint.
  
  
  METHODS
  Quasi-experimental repeated measures.
  
  
  METHODS
  Biomechanics laboratory in a university setting.
  
  
  METHODS
  Eleven men and six women free of ankle joint trauma.
  
  
  METHODS
  Range of motion about the ankle joint.
  
  
  RESULTS
  ANOVA revealed a significant difference for position main effect on ankle joint range of motion (p=0.01). Post-hoc tests revealed that ankle joint range of motion significantly decreased as participants moved from flexion (i.e., 90 degrees hip and 90 degrees knee), to supine, and to long sitting (47.3 degrees , 38.8 degrees , and 16.4 degrees ; p<0.05). No significant differences were revealed for pelvic posture (p=0.64).
  
  
  CONCLUSIONS
  These findings indicate that pelvic posture may not influence ankle joint range of motion regardless of hip and knee joint positions. However, the combination of hip flexion and knee extension (i.e., long sitting) produces the greatest deficits in ankle joint range of motion.
authors.affiliation: Utah State University Biomechanics Laboratory, Logan, UT, USA.
authors.forename: Brad
authors.initials: B
authors.lastname: Mitchell
authors.forename: Eadric
authors.initials: E
authors.lastname: Bressel
authors.forename: Peter J
authors.initials: PJ
authors.lastname: McNair
authors.forename: Megan E
authors.initials: ME
authors.lastname: Bressel
mesh_terms: D000328:Adult; D016512:Ankle Injuries; D000843:Ankle Joint / Q000503:physiopathology*; D001696:Biomechanical Phenomena; D005260:Female; D006801:Humans; D035002:Lower Extremity / Q000502:physiology*; D008297:Male; D016059:Range of Motion, Articular; D013647:Task Performance and Analysis; D055815:Young Adult