Trismus and neck fibrosis after head and neck radiotherapy come on slowly enough that neither the patient nor the clinician notices the month it happened. By the time someone measures, there is nothing to compare the number with, and the conversation becomes an argument about whether this is how the patient always was.
Maximal interincisal opening takes ten seconds with a ruler or a disposable gauge, and cervical rotation and extension take not much longer. Record all three before radiotherapy begins, and again at every survivorship visit. A fall from 45 mm to 33 mm is a clinical event with a date attached; 33 mm on its own is a number nobody can act on.
The reason this matters more than it used to is that the interventions in today's review are all easier earlier. Stretching and mobility work, microcurrent, pentoxifylline-tocopherol - none of them reverses established dense fibrosis well. A baseline is what turns fibrosis from something discovered into something tracked.
- Maximal interincisal opening in millimetres, recorded before radiotherapy and at every follow-up
- Add cervical rotation and extension; neck fibrosis is often the earlier complaint
- A trend matters more than a threshold - record the value even when it is normal
- Give the patient their own baseline number so they can notice the change too
- Refer to therapy on a documented fall, not on the impression that things are tighter
Why it matters
Without a baseline, radiation fibrosis is only diagnosed once it is established, which is when treatment works least well.
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