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Sacral orientation and Scheuermann's kyphosis.

Smadar Peleg¹, Gali Dar², Nili Steinberg³

¹Department of Anatomy and Anthropology, Sackler Faculty of Medicine, Tel Aviv University, 69978 Ramat Aviv, Tel Aviv, Israel ; Department of Physical Therapy, Zefat Academic College, Jerusalem Street 11, P.O. Box 160, 13206 Zefat, Israel.

|March 3, 2016

Summary

This summary is machine-generated.

Individuals with Scheuermann

Keywords:

Kyphosis Lordosis Pelvic incidence Scheuermann’s kyphosis Spinal alignment

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Area of Science:

Orthopedics and skeletal biology.
Biomechanical analysis of spinal deformities.

Background:

Scheuermann's kyphosis is a spinal deformity characterized by excessive outward curvature.
The role of sacral anatomical orientation (SAO) in the development of spinal deformities is not fully understood.

Purpose of the Study:

To investigate the relationship between spinal alignment and sacral anatomical orientation (SAO) in skeletal populations.
To compare SAO values in individuals with Scheuermann's kyphosis to those with normal spinal alignment.

Main Methods:

Screened 2025 skeletons for Scheuermann's disease based on specific vertebral wedging criteria.
Measured SAO using a defined angle on 185 individuals with normal spines and 183 with Scheuermann's kyphosis.
Analyzed SAO differences between the two groups.

Main Results:

Identified 183 cases (9%) of Scheuermann's kyphosis among the screened skeletons.
Found that the sacrum was significantly more horizontally oriented in individuals with Scheuermann's kyphosis (SAO: 44.44° ± 9.7°) compared to controls (SAO: 50° ± 9.9°).
The difference in SAO between groups was statistically significant (p < 0.001).

Conclusions:

A horizontally oriented sacrum is associated with Scheuermann's kyphosis.
Altered spinal biomechanics resulting from a more horizontal sacrum may contribute to the development of Scheuermann's kyphosis.