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Table 1 Studies using reliable means of determining magnitude of anatomic leg-length inequality

From: Anatomic and functional leg-length inequality: A review and recommendation for clinical decision-making. Part I, anatomic leg-length inequality: prevalence, magnitude, effects and clinical significance

Study Population "N" (573) Subjects/Notes Controls Av LLI (SD)
Gross R. 1983 Male marathon runners, age 24–49 33 No deleterious effect of the LLI   4.9 mm (3.8)
Venn et al 1983 Randomly chosen patients 60    5.4 mm (4.0)
Cleveland et al 1988 Low back pain patients 10 Standing and supine x-ray   4.7 mm (5.8)
Hoikka et al 1989 Chronic low back pain patients 100    4.9 mm (3.6)
Beattie et al 1990 Clinical subjects, age 22–60 19 10 with history of LLI or lower extremity or back pain 9 healthy 6.8 mm (5.7)
Soukka et al 1991 Four defined occupational and gender groups, age 35–54 247 194 with prior back pain (>12 mo ago and during last 12 mo with and without disability) 53 who never had back pain 5.0 mm (3.9)
Rhodes et al 1995 New LBP patients Chiropractic practice 50 Age 18–40 26 men 24 women   6.3 mm (4.1)
Mincer et al 1997 Volunteers 54 no history of back pain in last 6 months 10 men 44 women   2.4 mm (1.8)