Radiographic anatomy of the sacrospinalis muscle

Area of Science:

• Radiology
• Anatomy

Background:

• The sacrospinalis muscle, a deep back muscle, plays a role in spinal stability.
• Understanding its radiographic appearance is crucial for anatomical reference.

Purpose of the Study:

• To describe the visibility and course of the sacrospinalis muscle's lateral margin on supine abdominal radiographs.
• To correlate plain film findings with computed tomography (CT) imaging.

Main Methods:

• Retrospective analysis of 100 supine abdominal radiographs.
• Identification and tracing of the sacrospinalis muscle's lateral margin.
• Correlation with CT scans where available.

Main Results:

• The lateral margin of the sacrospinalis muscle was identified in 24% of the abdominal radiographs.
• The muscle's lateral margin demonstrated an oblique course, contrasting with the psoas muscle.
• Radiographic findings were consistent with CT observations.

Conclusions:

• The lateral margin of the sacrospinalis muscle is a discernible feature on supine abdominal radiographs.
• Its oblique orientation provides an anatomical landmark distinct from the psoas muscle.
• This finding aids in the interpretation of abdominal imaging and anatomical correlation.