I am in the same situation ... researching and studying my options for treatment of my osteopenia. I was on Fosamax long-term. Throughout the past 15 years I have had four doctors retire. I believe I may have been on Fosamax too long. I was not aware of the need to take a vacation from the use or being taken off of the drugs after X number of years. Research indicates that rare but serious Fosamax femur fractures are associated with long-term use. ... Furthermore, the Fosamax femur fractures occurred in patients who had been taking Fosamax for an average of five or more years. Well, I was one of those who had the femur fractures. One of the fractures occurred last year because I fell on a broken sidewalk in September, 2018. I fractured my right leg, pelvis and hip... I had an IM Nailing.On August 28th,2019, After 51 weeks...I had to have that IM Nailing surgery redone because the wrong size rod was used. When I was nearly finished with my physical therapy for the re-nailing it was discovered that I had a stress fracture in my left femur. On November 13, I had surgery on the left leg. After the re-mailing in August my orthopedic doctor took me off of the Fosamax. I understand that it’s a difficult to find the best treatment.... I know there are three major treatments.... Of course all of which have side effects, not to mention the cost. I am still researching and will be meeting with an endocrinologist in the first quarter of 2020. This is just my story ...I’m not saying that everyone who takes Fosamax ,or other drugs in that same class of drugs, will have femur fractures... I’m just one that did.