Undetected Wooden Foreign Object in Imaging Studies
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By
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Ryan Ajgaonkar
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Terry J. S. Lund
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Nilam J. Soni
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September 9, 2026
Clinical Scorecard: Undetected Wooden Foreign Object in Imaging Studies
At a Glance
Category | Detail |
|---|---|
Condition | Retained Wooden Foreign Body |
Key Mechanisms | Point-of-care ultrasound identifies wooden foreign bodies through echogenicity and acoustic shadowing. |
Target Population | Patients with suspected retained non-metallic foreign bodies, particularly those with foot injuries. |
Care Setting | Emergency or outpatient care settings where imaging studies are performed. |
Key Highlights
Wooden foreign bodies are undetectable in 86% of patients using CT.
Ultrasound is the preferred imaging modality for detecting wooden foreign bodies.
MRI has limited sensitivity for identifying retained wood.
Point-of-care ultrasound can identify wooden foreign bodies measuring 2.0–2.5 mm.
Surgical exploration may be necessary if imaging does not confirm the presence of a foreign body.
Guideline-Based Recommendations
Diagnosis
Consider point-of-care ultrasound for suspected retained non-metallic foreign bodies.
Management
Use ultrasound to guide further management and potential surgical intervention.
Monitoring & Follow-up
Monitor for signs of infection and cellulitis post-injury.
Risks
Inadequate imaging may lead to delayed diagnosis and treatment of retained foreign bodies.
Patient & Prescribing Data
Patients with foot injuries and suspected foreign body retention.
Oral antibiotics may be effective following surgical removal of the foreign body.
Clinical Best Practices
Utilize ultrasound as the first-line imaging modality for suspected wooden foreign bodies.
Perform surgical exploration if imaging studies are inconclusive and clinical suspicion remains high.
Related Resources & Content
IWGDF/IDSA Guidelines on the Diagnosis and Treatment of Diabetes-Related Foot Infections, 2023 -- Guidelines
MDSpire News — Unexpected Finds After Routine Procedures, 2023 -- Article
Retinal Physician — Update on the Management of Intraocular Foreign Bodies, 2017 -- Article
Detection of radiolucent wooden foreign bodies: diagnostic insights for computed tomography imaging, 2025 -- Article
An investigation of cortical bone thickness assessment via CT imaging in patients with metal implants
European Radiology — Integrating Virtual Monoenergetic Imaging with Iterative Metal Artifact Reduction in First-Generation Photon-Counting CT for Patients with Dental Implants
IWGDF/IDSA Guidelines on the Diagnosis and Treatment of Diabetes-Related Foot Infections
Retinopathy, Neuropathy, and Foot Care: Standards of Care in Diabetes—2026 | Diabetes Care | American Diabetes Association
Wood in the Wound: Detecting an Intra-Articular Wooden Foreign Body on Ultrasound - PMC
CT and MRI findings of intraorbital wooden foreign bodies - ScienceDirect
Detection of radiolucent wooden foreign bodies: diagnostic insights for computed tomography imaging - PMC
Based on findings from:
Wooden foreign body missed on imaging
Ryan Ajgaonkar, Terry J. S. Lund, Nilam J. Soni. Journal Of Hospital Medicine, 2026.
https://shmpublications.onlinelibrary.wiley.com/doi/10.1002/jhm.70472
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