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Table 3: Comparison between groups with and without arthrogryposis of features identified on MRI by visual inspection^{^a}
Ag (n = 4) No Ag (n = 8) P^{^b}
Sites with spinal cord reduction 
    Absent 0 (0.0%) 2 (25.0%) .002^{^c}
    Thoracic 0 (0.0%) 5 (62.5%)
    Cervical, thoracic 0 (0.0%) 1 (12.5%)
    Cervical, thoracic, conus medullaris 4 (100.0%) 0 (0.0%)
Site of most severe spinal cord reduction 
    Absent 0 (0.0%) 2 (25.0%) <.999
    Thoracic 4 (100.0%) 6 (75.0%)
Prominence of the anterior median fissure of the spinal cord 
    Absent 2 (50.0%) 8 (100.0%) .091
    Present 2 (50.0%) 0 (0.0%)
Reduction of the anterior nerve roots of the conus medullaris 
    No reduction 0 (0.0%) 2 (25.0%) .007^{^c}
    Mild 0 (0.0%) 4 (50.0%)
    Moderate 0 (0.0%) 2 (25.0%)
    Severe 4 (100.0%) 0 (0.0%)
Congenital hip dysplasia 
    Absent 0 (0.0%) 2 (25.0%) .515
    Present 4 (100.0%) 6 (75.0%)
Note:—Ag indicates arthrogryposis.
↵a Data are number of patients (%).
↵b P = Fisher Exact test.
↵c Statistically significant.