Do the MRI findings of compression deformity at L1‑L2 with STIR (Short Tau Inversion Recovery) hyperintense marrow edema, increased intervertebral disc signal, and grade 1‑2 retrolisthesis indicate a vertebral compression fracture?

Yes, these MRI findings indicate vertebral compression fractures at L1-L2.

The combination of compression deformity, STIR hyperintense marrow edema, and increased disc signal at L1-L2 are diagnostic hallmarks of acute vertebral compression fractures. 1

Key Diagnostic Features Present

The MRI findings you describe contain the classic triad that confirms fracture:

• Compression deformity: Direct structural evidence of vertebral body collapse
• STIR hyperintense marrow edema: This is the most sensitive marker for acute fracture, consistently demonstrating prominent signal abnormalities at fracture sites from less than 24 hours to 8 weeks old 1
• Increased intervertebral disc signal: Indicates acute injury with associated edema extending into the disc space

The STIR sequence is specifically designed to detect bone marrow edema and provides superior contrast between normal and abnormal marrow compared to standard spin-echo sequences. Signal abnormalities on STIR extend to the outer cortical margin in fractures and exceed the size of corresponding radiographic findings in all cases 1.

Additional Supporting Features

Your findings also include:

• Paravertebral edema: This adjacent soft tissue edema is characteristic of acute fracture and represents extension of the inflammatory response beyond the vertebral body
• Grade 1-2 retrolisthesis: This malalignment at L1-L2 is consistent with structural instability from the compression fracture
• Type 1 (edematous) endplate changes: These STIR hyperintense reactive changes at L1-L2 represent the acute inflammatory phase associated with fracture

Distinguishing Acute from Chronic Changes

The report describes both acute and chronic findings:

• Acute fracture at L1-L2: STIR hyperintense edema indicates this is recent (typically resolves within 1-3 months) 2
• Chronic changes at L4-L5: The combination of mild type 1 edematous changes AND type 2 fatty changes suggests older, healing degenerative disease rather than acute fracture

Clinical Implications

Based on the 2018 ACR guidelines 2 and 2025 NASS guidelines 3, these findings warrant:

1. Immediate assessment for "red flags": Rule out malignancy, infection, or neurologic compromise
2. Correlation with symptom duration: Acute fractures (<6 weeks) with persistent pain may benefit from vertebral augmentation
3. Evaluation for underlying osteoporosis: This appears to be an osteoporotic fracture pattern given the advanced degenerative changes and absence of described features suggesting malignancy (no pedicle involvement, no soft tissue mass mentioned) 4

Common Pitfall to Avoid

Do not confuse the advanced degenerative endplate changes (Modic type 1) with malignancy. Benign osteoporotic fractures show STIR signal intensity ratios >2.5, while malignant fractures show ratios <2.0 5. The presence of degenerative changes at multiple levels (L1-L2 and L4-L5) and the pattern described favor benign osteoporotic etiology.

The retrolisthesis and structural deformity indicate this is not merely degenerative endplate disease but represents true vertebral body failure—a compression fracture requiring appropriate management per osteoporotic fracture protocols 2, 3.