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Nail Puncture Wound Through a Rubber-Soled Shoe: Should We Take Every Patient to the Operating Room? JFAS: September 22, 2021
Nail puncture wounds through rubber-soled shoes, when presenting acutely, have a deceivingly benign appearance. High index of suspicion for a retained rubber piece should be maintained by the physician. This study investigates whether preoperative ultrasound examination can rule out a foreign body and reduce the need for surgery. It is a retrospective cohort of 125 patients with deep nail puncture wounds through a rubber-soled shoe, who underwent surgical exploration between 2008 and 2018. All patients had a preoperative ultrasound examination for detection of a rubber foreign body. The patients’ median age was 29, and 112 (89.6%) were males. Median time of presentation was 1 day, but there were patients who presented up to 90 days after injury (mean 5.1 ± 15.6 days). Foreign bodies, ranging 1-4 mm in diameter, were surgically removed in 37 (29.6%) patients. Only 16 of these patients had a positive preoperative ultrasound examination, corresponding to sensitivity of 43.2%. Specificity of the ultrasound examination was 95%. Ultrasound examination has low sensitivity for detection of foreign bodies following a puncture wound of the foot. This is attributable to the small size of the foreign bodies in this scenario and to the complexity of sonography in this location. We conclude that ultrasound cannot be used to rule out foreign body in the foot, and should not be relied on when deciding to avoid surgery. Nevertheless, it can be a helpful adjunct preoperatively, as an assessment of the foreign body size and location.
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