RADIOFREQUENCY ECHOGRAPHIC MULTISPECTROMETRY (REMS) FOR THE ASSESSMENT OF BMD REDUCTION AFTER PROSTHETIC SURGERY: A CLINICAL CASE REPORT

Knee and hip arthroplasty represent common procedure in ortho paedics. However, the interaction between bone and implant need to be analysed. It has been well established that the bone around implant might be face to a decreased BMD mainly due to mechanical stress (i.e., stress shielding) of altered joint biomechanics and/or aseptic inflammatory reaction leading to periprosthetic bone resorption. For these reasons, monitoring the bone around an implant is mandatory to guarantee longevity of implant and rule out cause of pain. In recent years, the non-ionising REMS technology, through the analysis of the reference axial sites (lumbar spine and femoral neck), has been used to assess the bone health status and fracture risk prediction. However, REMSisable to analyse the bone health status even in the presence of prosthetic implants due to its capability to automatically discard artefacts. We report a clinical case of patient underwent to hip arthroplasty with the analysis of bilateral bone femoral neck through REMS technology.