Fig. 1.

Cervical spine features of patients diagnosed with osteogenesis imperfecta type V. A, Lateral radiographic view in neutral position of cervical spine showing severe cervical kyphosis and listhesis at C2-C3; B, Lateral radiographic view in extension position of cervical spine showing persistent cervical kyphosis and listhesis at C2-C3; C, Lateral radiographic view in flexion position of cervical spine showing aggravated cervical kyphosis and listhesis at C2-C3; D, Lateral radiographic view in neutral position of cervical spine showing severe cervical kyphosis and multilevel listhesis at C2-C3 and C3-C4; E, Lateral computed tomography scan showing listhesis at C2-C3 and anterior wedge of vertebral body with narrowing of spinal canal; F, Lateral magnetic resonance image showing cervical kyphosis compromising the spinal cord (impingement C3-C4); G, Lateral radiographic view in neutral position showing cervical kyphosis with multilevel listhesis at C2-C3 and C3-C4 and vertebral bodies with anterior wedge and flattened shape; H, Lateral computed tomography scan confirming the anterior wedge and flattened vertebral body shape; I, Coronal magnetic resonance image showing associated scoliosis in a patient with cervical kyphosis.