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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Change in the postoperative intervertebral space height and its impact on clinical and radiological outcomes after ACDF surgery using a zero-profile device: a single-Centre retrospective study of 138 cases

Fig. 1

Representation of the radiographic measurement of the intervertebral height (IH) and its postoperative trend. The IH (black solid arrow between two vertebrae) = a - (b + c), where a (red arrow) is the distance from the midpoint of the upper endplate of the upper vertebral body and that of the lower endplate of the lower vertebral body, b is the distance from the midpoint of the upper endplate of the upper vertebral body to the midpoint of the lower endplate, and c is the distance from the midpoint of the upper endplate to the midpoint of the lower endplate

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