Underdiagnosis and Undertreatment of Osteoporosis: The Battle to Be Won.

CONTEXT: An expert opinion perspective on why osteoporosis is underdiagnosed and undertreated.
OBJECTIVE: To highlight the potential reasons for why osteoporosis is undertreated.
DESIGN: Literature review from PubMed, Plos One, and Science Direct search engines from 1900-2015 under terms: sub-trochanteric and atypical femur fractures, bisphosphonate clinical trial and bisphosphonate review articles, and treatment/under treatment of osteoporosis, as well as personal experience.
SETTING: Careful and objective review. PATIENTS: Derived from reviews.
INTERVENTIONS: Bisphosphonates. OUTCOMES: Atypical sub-trochanteric femur fractures.
RESULTS: Atypical sub-trochanteric femur fractures occur in both bisphosphonate and non-bisphosphonate users; and, bisphosphonate utilization has declined in temporal relationship with the reporting of these fractures associated with bisphosphonate use. There is no causality in this association and the benefit/risk ratio of bisphosphonates reducing all fracture risk vs the potential for the development of an atypical sub-trochanteric femur fracture is exceedingly in favor of bisphosphonate use in higher risk populations.
CONCLUSIONS: Treatments for osteoporosis should not be stopped (e.g. the "drug-holidays") in higher risk patients since the basic pathophysiology of osteoporosis continues; and, the evidence linking bisphosphonate use to causing atypical sub-trochanteric femur fractures is non-existent.