Having a pathologically exaggerated kyphotic curve of the thoracic spine. This is most often a complication of Sheuermann disease or osteoporosis.
See also: Scheuermann disease, osteoporosis
References in periodicals archive ?
The first and most obvious sign of upper crossed syndrome is the characteristic postural dysfunction of protracted scapulae, medially rotated humeri, hyperkyphotic (overly flexed) upper thoracic spine, and a protracted/ anteriorly held head, which is created by hypolordosis or even kyphosis (excessive flexion) of the lower cervical spine, hyperlordosis (excessive extension) of the upper cervical spine and head, and anterior translation of the head upon the atlas (Table 2).
The most important assessment tool is static postural assessment, which will reveal the characteristic protracted scapulae, medially rotated humeri, hyperkyphotic upper thoracic spine, and an anterior head posture (hypolordotic lower cervical spine and a hyperlordotic upper cervical spine).
Spinal exam revealed overall loss of flexibility and range of motion in all planes, with anterior head carriage, and hyperkyphotic antalgic posture.
In AS patients, ligamentous ossification, syndesmophytosis, and a rigid hyperkyphotic deformity may develop.
The thoracic hyperkyphotic posture in relaxed standing in male tennis players may be more related to factors other as a lack of postural scheme than the specific training in tennis.
A higher percentage of hyperkyphotic postures in standing on the floor were found in the elite cyclists.