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Picture-frame vertebra is a radiologic descriptor where the vertebral body appears denser at its periphery with a relatively radiolucent (less dense) center, giving it the appearance of a picture frame on anteroposterior (AP) spinal X-rays.
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Radiologic Features:
| Feature | Description |
|---|---|
| Sclerotic vertebral body margins | Four denser edges of the vertebra on AP view |
| Lucent central body | Relative osteopenia in the trabecular (central) bone |
| Shape resembles a picture frame | Sclerosis outlines a square or rectangular central radiolucency |
!["Picture frame" appearance of vertebral bodies on lateral lumbar spine view. As result of resorption processes, vertebral bodies show an overall increase in radiolucency and a thin and well-demarcated cortical rim.
Quantitative imaging techniques for the assessment of osteoporosis and sarcopenia - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Picture-frame-appearance-of-vertebral-bodies-on-lateral-lumbar-spine-view-As-result-of_fig1_323418554 [accessed 4 Aug, 2022]](attachment:3d8860af-4900-4c4e-8f8e-7b1855945971:9e93da77-17d1-4769-bfeb-bbcb75ffbe3b.png)
"Picture frame" appearance of vertebral bodies on lateral lumbar spine view. As result of resorption processes, vertebral bodies show an overall increase in radiolucency and a thin and well-demarcated cortical rim.
Quantitative imaging techniques for the assessment of osteoporosis and sarcopenia - Scientific Figure on ResearchGate. Available from: https://www.researchgate.net/figure/Picture-frame-appearance-of-vertebral-bodies-on-lateral-lumbar-spine-view-As-result-of_fig1_323418554 [accessed 4 Aug, 2022]
Paget disease (bone): Excessive disorganized bone remodeling causes cortical thickening and trabecular coarsening → picture-frame vertebra
This pattern arises due to excessive bone remodeling, particularly from increased cortical (peripheral) bone deposition and central trabecular bone resorption. It reflects a high-turnover metabolic bone process where new bone formation occurs predominantly at the margins.
Other possible associations:
| Condition | Notes |
|---|---|
| ‣ | May mimic in advanced cases (due to alternating sclerosis and resorption) |
| Osteopetrosis | Typically shows diffuse sclerosis, but may rarely resemble the appearance |
| Sickle cell disease | Can show endplate changes but more commonly H-shaped vertebrae |
Distinguishing from Other Vertebral Signs:
| Radiologic Sign | Key Feature | Association |
|---|---|---|
| Picture-frame vertebra | Peripheral sclerosis | Paget disease |
| Rugger-jersey spine | Endplate sclerosis | CKD–MBD (secondary hyperparathyroidism) |
| Sandwich vertebra | Sclerotic endplates | Osteopetrosis |
| Codfish vertebra | Central endplate concavity | Osteoporosis, sickle cell, CKD |
| H-shaped vertebra | Central endplate infarction | Sickle cell disease |
| Vertebra plana | Flattened vertebral body | LCH, trauma, infection |