EM · Procedural & diagnostic ED skills
Foreign body removal in the emergency department
Also known as Foreign body removal · Soft tissue foreign body · Corneal foreign body · Aural foreign body · Nasal foreign body · Button battery removal · Rust ring removal · Splinter removal
Foreign body removal in the ED across the four anatomical compartments — the soft tissue FB (the wood splinter, the glass shard, the metal shaving, the needle), the ocular FB (the metallic rust ring, the conjunctival FB under the upper lid), the aural FB (the bead, the live insect, the cotton-bud tip, the button battery), and the nasal FB (where the button battery is a time-critical emergency). The technique spine — local anaesthetic, a sterile field, the right instrument (forceps, hook, needle), and a systematic wound exploration — is shared, but each compartment has its own equipment, its own pitfalls, and its own escalation trigger. The imaging logic is radio-opaque versus radiolucent: an X-ray for the metal and the glass, a high-frequency ultrasound for the wood and the plastic. The post-removal care is tetanus assessment, wound toilet, and antibiotics only for the contaminated, the bite, and the plantar puncture. The differential on every case is retained versus resolved — and the worst error is to discharge a patient with a residual fragment and a developing infection. ACEM-primary, globally tagged.
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Related topics
- Wound assessment and management
- Wound closure and suturing techniques
- Local anaesthesia and topical agents
- Foreign body ingestion and aspiration — coins, button batteries, magnets and the choking child
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Meet the patient
A 54-year-old insulin-dependent diabetic presents 48 hours after stepping on a wooden splinter barefoot in the garden. A 5 mm plantar puncture, surrounding erythema, warm and tender — but he can weight-bear, and he is afebrile. The registrar orders a plain X-ray of the foot, reads it as clear, and prepares to discharge.[2][8]
Stop. Wood is radiolucent — the clear film is falsely reassuring, and the retained splinter will declare itself days later as a necrotising soft-tissue infection. The history mandates a high-frequency ultrasound, not an X-ray.[2][9]
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- [1]Carneiro BC, Cruz IAN, Chemin RN, et al. Multimodality Imaging of Foreign Bodies: New Insights into Old Challenges Radiographics, 2020.PMID 33136481
- [2]Chaulagain U, Gyawali S, Pokhrel KM, et al. Missed Wooden Perineum Foreign Body Leading to Extensive Necrotizing Soft Tissue Infection: A Case Report Clin Case Rep, 2026.PMID 41550391
- [3]Xu P, Lim JK Managing corneal foreign body injuries in a primary eye care setting Clin Exp Optom, 2026.PMID 40174878
- [4]Ng SM, Leslie L, Tzang CC, et al. Antibiotic prophylaxis for corneal abrasion Cochrane Database Syst Rev, 2025.PMID 41017778
- [5]Ponnuvelu K, Saniasiaya J, Abdul Gani N Intriguing aural foreign body and algorithm of management of foreign body BMJ Case Rep, 2021.PMID 34400422
- [6]Morris S, Osborne MS, McDermott AL Will children ever learn? Removal of nasal and aural foreign bodies: a study of hospital episode statistics Ann R Coll Surg Engl, 2018.PMID 29968507
- [7]Heilig Y, Tsarfati Y, Gete M, et al. Long-term outcomes following nasal button battery foreign body injuries in children: a 10-year retrospective analysis of 45 patients Int J Pediatr Otorhinolaryngol, 2026.PMID 41985339
- [8]Chachad S, Kamat D Management of plantar puncture wounds in children Clin Pediatr (Phila), 2004.PMID 15094944
- [9]Osborne K, McLean TJ, Heiner JD, et al. Special Forces Medics Ability to Identify Wooden Foreign Bodies by Point-of-Care Ultrasound J Spec Oper Med, 2025.PMID 39621007