On 2014 Mar 06, David Keller commented:

An osteoporosis patient may express excessive anxiety about the risks of jaw osteonecrosis and atypical brittleness fractures ("porcelain bones"), rare harmful side-effects of prolonged bisphosphonate therapy, even though the patient may not yet be at risk. I agree that performing a DEXA scan every 2 to 3 years is probably excessive for medication-compliant patients with moderate risk of osteoporotic fracture, for whom such frequent scans are unlikely to result in a change in treatment. However, these scans can motivate a "change of treatment" if the patient has been surreptitiously skipping her bisphosphonate pills due to publicity about their potential side-effects, and she learns from her DEXA scan that her BMD has decreased as a result, placing her at even higher risk for a typical osteoporotic fracture.

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On 2014 Mar 06, David Keller commented:

An osteoporosis patient may express excessive anxiety about the risks of jaw osteonecrosis and atypical brittleness fractures ("porcelain bones"), rare harmful side-effects of prolonged bisphosphonate therapy, even though the patient may not yet be at risk. I agree that performing a DEXA scan every 2 to 3 years is probably excessive for medication-compliant patients with moderate risk of osteoporotic fracture, for whom such frequent scans are unlikely to result in a change in treatment. However, these scans can motivate a "change of treatment" if the patient has been surreptitiously skipping her bisphosphonate pills due to publicity about their potential side-effects, and she learns from her DEXA scan that her BMD has decreased as a result, placing her at even higher risk for a typical osteoporotic fracture.

To facilitate discussion, I respectfully request the person who found this comment "not helpful" to state their reason