When a crash cut still hurts, glass may be hiding inside

Guidance from an emergency physician and a wound care clinician

Shattered windows and flying debris can leave glass or other bits in a wound during a crash. A tiny piece can stay behind even when the skin on top looks clean. One sign is a sharp pain that stays in one exact spot when you press or move the area. A leftover piece can also bother a nerve or slow healing. Still, some sore wounds have no glass in them at all. A doctor needs to examine yours. [1, 2]

Point to the spot that hurts

Tell your doctor if glass broke near you and where you were cut. Show exactly where the pain still sits. Mention any tingling or trouble moving. Speak up if it feels like something is under the skin or if fluid is draining out. [1, 2]

The team can look inside the wound and check the nerves, tendons and blood flow nearby. X rays often help spot glass. An ultrasound can help find a small piece. It can also clear up an X ray that came back negative or unclear. No test catches every fragment. [1, 2]

Taking it out or leaving it in

Your doctor will weigh the size and spot of the object against the chance of harming nearby tissue while removing it. Some pieces are best taken out. Others may be left and watched when removal would do more harm. Ask if the wound needs cleaning and whether stitches make sense. Find out if your tetanus protection is up to date. Do not dig into the wound with tweezers or a needle. [1, 3]

Signs it's time to go back

Get care soon for redness that spreads, fever, pus or swelling that gets worse. New numbness or trouble moving a finger, arm or leg also needs a prompt visit. A deep wound that won’t stop bleeding is an emergency. [1, 3]

Questions about glass and your wound

  1. Could my pain come from glass, or from a hurt nerve or tendon?
  2. Would an X ray or ultrasound change what we do?
  3. If a piece stays in, what signs should bring me back?

Mark the sore spot before your visit

Before your exam, mark the exact tender spot on a photo or a simple body drawing. [1]

Sources and further reading

  1. 1American Academy of Family Physicians, foreign bodies in the skin
  2. 2American College of Emergency Physicians, foreign body localization
  3. 3Centers for Disease Control and Prevention, wound management to prevent tetanus

This overview draws on emergency and wound care for general education. Never probe a deep wound on your own. Your doctor can weigh imaging, safe removal and the risks of leaving a piece in place.

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