The Fosamax facade is starting to crumble
02, 03 09, 20:49 Filed in: Medical
After years of hints that all the bisphosphonates (medications used for osteoporosis) caused jaw osteonecrosis (destruction of the jaw bone after dental work), a new article shows that the risk of jaw osteonecrosis when the person gets dental surgery who has been on Fosamax is one in 23, or around 4%, 1600 times higher than the 0.0005-0.0025% Merk “estimated” in 2007.
While 4% may not seem like a big number, it seems a lot more problematic when realizing how devastating jaw osteonecrosis can be. The jaw bone near the surgery breaks down, leaving a broken jaw, and it can continue to expand. Any attempt to bridge the gap will cause further destruction, as drilling into the bisphosphonate saturated bone will only trigger more breakdown. With no known way to remove the bisphosphonate from the bone once it’s in there, all the dentist can do is watch helplessly as the jaw falls apart. Hyperbaric oxygen therapy is the only treatment that has shown any promise in stemming the collapse and even that isn’t stunningly effective.
Understandably, dentists are reluctant to operate on people who may be at risk due to the devastating effects on the patient, and are also reluctant to report it happening due to the devastating effects on their reputation and office. So, the condition is dramatically under-reported. Even with less loaded conditions, 90% are never reported.
Of course, this is on top of the risk of erosions and cancer of the esophagus from these medications.
The companies making the bisphosphonates (Fosamax, Actonel, Boniva, Aredia, Zometa and Reclast) have been attempting to portray these medications as safe and effective for the treatment of osteoporosis as well as attempting to expand the market to include the treatment of osteopenia (milder bone loss). Clearly, if one in 23 of people on the oral form of these medications (the IV form is much worse) will have their jaw disintegrate if they get dental surgery, it’s not safe. Whether it’s effective is open to debate.
When trying to prove that putting their new chemical into people is a good idea, drug companies and the researchers that work for them have a lot of tricks to make the chemical that they’ve dumped a pile of money into producing look good enough to produce the serious return on investment they need. Drug companies like to use intermediate markers rather than outcomes since they are easier and cheaper to measure and easier to game than the real outcomes we care about. With cardiac disease, the outcome we’re concerned about is dying or having a hospitalization, while cholesterol or LDL levels are an intermediate marker that may not translate into the outcomes I mentioned. With bone loss, the real outcome is fractures, while an intermediate marker is bone density. By strapping a lead rod behind your leg, it can look denser to the machine, but it won’t do a thing to reduce fractures. While a medication may increase bone density (remember that density is mass per volume, so heavier bones), it may not actually make them stronger (they can be dense and brittle, or lighter but with just enough give to resist breaking: think glass compared to titanium).
While the drug companies have been doing their typical attempt to brush it all under the rug, they also engaged in their typical pastime of trying to get doctors to prescribe it to people for whom it isn’t indicated. As I discussed 18 months ago, the evidence doesn’t support the idea that this drug is beneficial for osteopenia. Perhaps the only thing that does support the idea is the money the drug companies spend on lunches for physicians so they can whisper these sweet nothings in their ears.
While 4% may not seem like a big number, it seems a lot more problematic when realizing how devastating jaw osteonecrosis can be. The jaw bone near the surgery breaks down, leaving a broken jaw, and it can continue to expand. Any attempt to bridge the gap will cause further destruction, as drilling into the bisphosphonate saturated bone will only trigger more breakdown. With no known way to remove the bisphosphonate from the bone once it’s in there, all the dentist can do is watch helplessly as the jaw falls apart. Hyperbaric oxygen therapy is the only treatment that has shown any promise in stemming the collapse and even that isn’t stunningly effective.
Understandably, dentists are reluctant to operate on people who may be at risk due to the devastating effects on the patient, and are also reluctant to report it happening due to the devastating effects on their reputation and office. So, the condition is dramatically under-reported. Even with less loaded conditions, 90% are never reported.
Of course, this is on top of the risk of erosions and cancer of the esophagus from these medications.
The companies making the bisphosphonates (Fosamax, Actonel, Boniva, Aredia, Zometa and Reclast) have been attempting to portray these medications as safe and effective for the treatment of osteoporosis as well as attempting to expand the market to include the treatment of osteopenia (milder bone loss). Clearly, if one in 23 of people on the oral form of these medications (the IV form is much worse) will have their jaw disintegrate if they get dental surgery, it’s not safe. Whether it’s effective is open to debate.
When trying to prove that putting their new chemical into people is a good idea, drug companies and the researchers that work for them have a lot of tricks to make the chemical that they’ve dumped a pile of money into producing look good enough to produce the serious return on investment they need. Drug companies like to use intermediate markers rather than outcomes since they are easier and cheaper to measure and easier to game than the real outcomes we care about. With cardiac disease, the outcome we’re concerned about is dying or having a hospitalization, while cholesterol or LDL levels are an intermediate marker that may not translate into the outcomes I mentioned. With bone loss, the real outcome is fractures, while an intermediate marker is bone density. By strapping a lead rod behind your leg, it can look denser to the machine, but it won’t do a thing to reduce fractures. While a medication may increase bone density (remember that density is mass per volume, so heavier bones), it may not actually make them stronger (they can be dense and brittle, or lighter but with just enough give to resist breaking: think glass compared to titanium).
While the drug companies have been doing their typical attempt to brush it all under the rug, they also engaged in their typical pastime of trying to get doctors to prescribe it to people for whom it isn’t indicated. As I discussed 18 months ago, the evidence doesn’t support the idea that this drug is beneficial for osteopenia. Perhaps the only thing that does support the idea is the money the drug companies spend on lunches for physicians so they can whisper these sweet nothings in their ears.
