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Table 1 Patient demographics and radiographic parameters

From: Developmental pattern of the hip in patients with hereditary multiple exostoses

  Group 1(22 patients, 44 hips) Group 2(8 patients, 13 hips)
Gender (Male: Female) 13:9 3:5
Duration of follow up (years, range) 6.8 (4– 11) 5.4 (2– 9)
  Initial Last follow-up Initial Last follow-up
Age (years, range) 6.0 (2– 12) 12.0 (6– 19) 10.4 (8– 13) 15.5 (13– 17)
HEA (degree, range) 14.2 (3– 21.6) 17.8 (−5.7– 44) 28.7 (25.6– 35.9) 29.7 (25.9– 34)
NSA (degree, range) 149.1 (134.3– 164.8) 148.6 (145.9– 151.3) 142.6 (136– 152.3) 136.4 (131.1– 143.8)
MP (percentage, range) 14.0 (0– 28) 19.4 (16.5– 22.4) 20.7 (8.9– 32.5) 21.3 (12.1– 31.7)
  1. HEA: Hilgenreiner epiphyseal angle, NSA: Neck-shaft angle, and MP: Migration percentage.