Hand injury from pneumatic needle gun
Rodolfo Mendes Queiroz, Fred Bernardes Filho
The Pan African Medical Journal. 2018;29:46. doi:10.11604/pamj.2018.29.46.14638

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Hand injury from pneumatic needle gun

Cite this: The Pan African Medical Journal. 2018;29:46. doi:10.11604/pamj.2018.29.46.14638

Received: 18/12/2017 - Accepted: 04/01/2018 - Published: 18/01/2018

Key words: Hand injuries, occupational risks, occupational health

© Rodolfo Mendes Queiroz et al. The Pan African Medical Journal - ISSN 1937-8688. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Available online at: http://www.panafrican-med-journal.com/content/article/29/46/full

Corresponding author: Fred Bernardes Filho, Dermatology Division, Department of Medical Clinics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil (f9filho@gmail.com)


Hand injury from pneumatic needle gun

Rodolfo Mendes Queiroz1,2, Fred Bernardes Filho3,&

 

1Department of Radiology and Imaging, Santa Casa da Misericórdia of Avaré, Avaré, São Paulo, Brazil, 2CENTROMED Diagnóstico por Imagem, Avaré, São Paulo, Brazil, 3Dermatology Division, Department of Medical Clinics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil

 

 

&Corresponding author
Fred Bernardes Filho, Dermatology Division, Department of Medical Clinics, Ribeirão Preto Medical School, University of São Paulo, Ribeirão Preto, Brazil

 

 

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A 37-year-old male complained of pain and swelling of his left hand for 7 days. He was a woodworker and reported that he was using a pneumatic needle gun when the pain began. The patient claimed to have seen a scorpion in the workplace and he believed to have suffered a sting. Initially he sought an emergency room, where hydrocortisone and ketoprofen were administered, and loratadine was prescribed. Because it does not show improvement with seven days of loratadine, he sought the dermatology service. On physical examination, heat, redness and swelling of whole left hand was observed. Dermoscopy with a handheld dermoscope (DermLite II Pro 3Gen) showed a single puncture wound over volar surface of the third left metacarpal. Hand X-ray revealed a foreign body in soft tissue of third left metacarpal. The diagnosis of hand injury from pneumatic needle gun was made. Foreign body was identified and removed. Intravenous antibiotics were administered pre-operatively and oral antibiotics continued post-operatively. Nail gun injuries commonly occur related to improper use by the operator and not following occupational health and safety requirements for operating a nail gun. The amount of energy required to cause serious injury is fairly low: penetration of the skin occurs with projectile velocities of 150 feet per second, whereas bony fractures may occur with projectile velocities of 195 feet per second. Mechanisms of nail gun injury include direct penetration, shrapnel wounds from exploding cartridges and high-pressure injection injuries from the compressed air used to activate the gun. Assessment of a patient with a puncture wound and suspected foreign body begins with a careful history and physical examination.

 

 

Figure 1: a metal density focus is noted in soft tissue of third left metacarpal; no fracture/dislocation is noted

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 


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Hand injuries
Occupational risks
Occupational health

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