Change in Abdominal Morphology After Surgical Correction of Thoracolumbar Kyphosis Secondary to XXXX : A Computed Tomographic Study.

@entity1 @entity1513 @entity532 @entity1691 @entity1515 @entity1320
STUDY DESIGN: A computed tomographic study. OBJECTIVE: To investigate the change in abdominal morphology in surgically treated @entity1 with @entity1691 ( @entity1691 ) and thoracolumbar @entity1513 . SUMMARY OF BACKGROUND DATA: Severe thoracolumbar @entity1513 in @entity1 with @entity1691 exerts pressure on the abdominal cavity and subsequently causes @entity1320 . Several spinal osteotomy techniques have been widely used to correct @entity1691 -related thoracolumbar @entity1513 . To date, the changed abdominal morphology in @entity1 with @entity1691 undergoing surgical correction of thoracolumbar @entity1513 has not been addressed. METHODS: A total of 29 @entity1 with @entity1691 undergoing lumbar pedicle subtraction osteotomy for correction of thoracolumbar @entity1513 were retrospectively reviewed. Computed tomographic scans of the spine were used to measure the longitudinal, transverse, and anterior-posterior diameters of the abdominal cavity. Furthermore, the abdominal cavity was considered as an ellipsoid structure, thereby allowing calculation of its volume. Radiographical evaluations included @entity1513 ( @entity1513 ), @entity1513 , @entity1515 ( @entity1515 ), and angle of fusion levels (AFL). RESULTS: The longitudinal diameter of abdominal cavity significantly increased (P<0.01), whereas the transverse and anterior-posterior diameters of the abdominal cavity did not change, postoperatively (P>0.05). Significant changes in @entity1513 , @entity1515 , and AFL were observed (P<0.01). The abdominal cavity volume (ACV) increased by an average of 652mL. The change in ACV was significantly correlated with the changes in @entity1513 (r=0.453, P=0.014), @entity1515 (r=0.42, P=0.023), and AFL (r=0.388, P=0.037). CONCLUSION: The increased ACV after correction of thoracolumbar @entity1513 was quantitatively confirmed by this study. Thus, the improvement in digestive function after correction of thoracolumbar @entity1513 secondary to @entity1691 , which has been previously documented, may be because of an increase in ACV. Moreover, spine surgeons should be aware of the potential risk for the development of @entity532 caused by the lengthening of longitudinal diameter of the abdominal cavity. LEVEL OF EVIDENCE: 3.
