title: Leg-length inequality in people of working age. The association between mild inequality and low-back pain is questionable.
abstract: Leg-length inequality was measured from radiographs at the level of the vertices of the femoral heads in 247 men and women aged 35-54 years. Of these, 53 had never had any low-back problem, but they had considerable variation in leg-length inequality (mean SD, 5.5 +/- 4.1 mm; range, up to 20 mm). This group of symptom-free individuals did not differ from a group of 78 persons who had disabling low-back pain (LBP) during the previous 12 months (mean SD, 5.3 +/- 4.0 mm; range, up to 17 mm). The adjusted relative risks (odds ratios) of having LBP ever and of disabling pain during the last 12 months were 0.78 (95% confidence interval, 0.43-1.17) and 1.02 (0.68-1.38), respectively, for an increase of 5 mm in leg-length inequality. The results from this study make an association between mild leg-length inequality and LBP questionable.
authors.affiliation: Orthopaedic Hospital of the Invalid Foundation, Helsinki, Finland.
authors.forename: A
authors.initials: A
authors.lastname: Soukka
authors.forename: H
authors.initials: H
authors.lastname: Alaranta
authors.forename: K
authors.initials: K
authors.lastname: Tallroth
authors.forename: M
authors.initials: M
authors.lastname: Heliövaara
mesh_terms: D000328:Adult; D001416:Back Pain / Q000453:epidemiology / Q000209:etiology*; D005260:Female; D005387:Finland / Q000453:epidemiology; D006306:Health Surveys; D006801:Humans; D007866:Leg / Q000000981:diagnostic imaging; D007870:Leg Length Inequality / Q000150:complications* / Q000000981:diagnostic imaging / Q000453:epidemiology; D008297:Male; D008875:Middle Aged; D009790:Occupations; D016017:Odds Ratio; D011859:Radiography; D012307:Risk Factors