title: Gait in patients with pregnancy-related pain in the pelvis: an emphasis on the coordination of transverse pelvic and thoracic rotations.
abstract: OBJECTIVE
  To quantify gait impairments in women with pregnancy-related pain in the pelvis which persisted post-partum.Design. Nine patients and nine healthy subjects were studied during treadmill walking at different velocities.
  
  
  BACKGROUND
  Walking problems in patients with pregnancy-related pain in the pelvis have been known to exist for a long time. To date, no quantitative gait studies have been conducted in this population.
  
  
  METHODS
  Maximum attainable walking velocity was determined, amplitudes of pelvic and thoracic rotations were calculated, and spectral analysis was used to assess the harmonicity of these rotations. Coordination between pelvic and thoracic rotations was characterized as mean relative Fourier phase and weighted coherence.
  
  
  RESULTS
  Maximum attainable walking velocity was highly variable between patients, but on average significantly lower than in healthy controls. Moreover, patients had a significantly lower mean relative Fourier phase (again, highly variable) and higher weighted coherence. The other parameters did not differ significantly between groups.
  
  
  CONCLUSIONS
  Coordination between pelvic and thoracic rotations in the transverse plane was affected in patients with pregnancy-related pain in the pelvis. Individual patients may apply different strategies during walking to cope with the underlying problems.
  
  
  CONCLUSIONS
  Pregnancy-related pain in the pelvis is poorly understood. Patients with this condition are known to have problems with locomotion. The present study reveals that gait coordination is altered. Theoretically, this underlines the importance of analysing coordination in pathological movement. Clinically, better understanding the gait problems of women with pregnancy-related pain in the pelvis may contribute to more appropriate treatments.
authors.affiliation: Department of Orthopaedic Surgery, Academic Hospital, Vrije Universiteit, Amsterdam, The Netherlands.
authors.forename: Wenhua
authors.initials: W
authors.lastname: Wu
authors.forename: Onno G
authors.initials: OG
authors.lastname: Meijer
authors.forename: Paul C
authors.initials: PC
authors.lastname: Jutte
authors.forename: Kimi
authors.initials: K
authors.lastname: Uegaki
authors.forename: Claudine J C
authors.initials: CJ
authors.lastname: Lamoth
authors.forename: G
authors.initials: G
authors.lastname: Sander de Wolf
authors.forename: Jaap H
authors.initials: JH
authors.lastname: van Dieën
authors.forename: Paul I J M
authors.initials: PI
authors.lastname: Wuisman
authors.forename: Gert
authors.initials: G
authors.lastname: Kwakkel
authors.forename: Johanna I P
authors.initials: JI
authors.lastname: de Vries
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Beek
mesh_terms: D000328:Adult; D005080:Exercise Test; D005260:Female; D005583:Fourier Analysis; D005684:Gait; D006801:Humans; D008297:Male; D017699:Pelvic Pain / Q000209:etiology* / Q000503:physiopathology*; D010388:Pelvis / Q000503:physiopathology*; D010507:Periodicity; D011247:Pregnancy; D011248:Pregnancy Complications / Q000503:physiopathology*; D011597:Psychomotor Performance; D012399:Rotation; D012680:Sensitivity and Specificity; D013223:Statistics as Topic; D013909:Thorax / Q000503:physiopathology*