Comparison of Bone Microarchitecture Analysed by HRpQCT and pQCT in Pathologies With Bone Loss and/or Muscle Loss

"Xtreme CT® device is a high resolution peripheral quantitative computed tomography (HR-pQCT) used to measure bone density and quantify the bone architecture to 3D at the extremities of the human body.~For the study, the device will be used to assess bone density and microarchitecture at the forearm and shin for a systemic effect. In rheumatoid arthritis, bone density and microarchitecture will also be measured at the metacarpophalangeal."

Peripheral Quantitative Computed Tomography (pQCT) will be performed and measure bone and muscle parameters.

The Lunar Dual Energy X-ray Absorptiometry (DEXA) is a third generation multi-captor DEXA device that allow short duration measurements. It measures Bone Mineral Density (BMD) at the spine and the femoral neck.