# The Hole in the G7
**URL:** https://forum.fudiabetes.org/t/the-hole-in-the-g7/15906
**Category:** New T1/LADA
**Tags:** dexcom
**Created:** [March 2, 2026, 3:35pm UTC](https://forum.fudiabetes.org/t/the-hole-in-the-g7/15906 "2026-03-02T15:35:42Z")
**Posts on this page:** 4
**Page:** 1
### Author:  [@JOHN1951](https://forum.fudiabetes.org/u/JOHN1951)
#### Post date: [March 2, 2026, 3:35pm UTC](https://forum.fudiabetes.org/t/the-hole-in-the-g7/15906/1 "2026-03-02T15:35:43Z")
There have been numerous post regarding sensor wires coming up thru the hole.
My issue. , I researched it , what’s the hole for.
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### Author:  [@gftaylor](https://forum.fudiabetes.org/u/gftaylor)
#### Post date: [March 2, 2026, 3:54pm UTC](https://forum.fudiabetes.org/t/the-hole-in-the-g7/15906/2 "2026-03-02T15:54:28Z")
That hole is for the applicator needle that deploys the sensor wire under the skin. The needle then retracts and is supposed to leave the sensor wire in place. Sometimes when the needle retracts the sensor wire comes out with it, leaving the sensor wire in the air and an empty hole in your arm (or other chosen location).
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### Author:  [@allison](https://forum.fudiabetes.org/u/allison)
#### Post date: [March 2, 2026, 4:22pm UTC](https://forum.fudiabetes.org/t/the-hole-in-the-g7/15906/3 "2026-03-02T16:22:35Z")
@gftaylor answered your question, but for some more information: this is called “goosenecking.” It was a big problem for people last year but seems to have improved. If it happens to you, contact Dexcom and they will replace the sensor. (Sometimes they ask for the defective one back, so keep your inserter and sensor to be safe.)
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### Author:  [@JOHN1951](https://forum.fudiabetes.org/u/JOHN1951)
#### Post date: [March 2, 2026, 4:30pm UTC](https://forum.fudiabetes.org/t/the-hole-in-the-g7/15906/4 "2026-03-02T16:30:07Z")
Thanks