NASA Human Research Program Investigators' Workshop 2012 sess241.pdf Tuesday, February 14, 2012 BONE :00 p.m. Tanglewood Chairs: Jean Sibonga Tom Lang 3:00 p.m. Hargens A. R. Chiang S. B. Sayson J. V. Parazynski S. E. Chang D. G. Garfin S. R. Lotz J. C. Mechanism of Post-Flight Herniation of Intervertebral Discs [#4002] Herniated intervertebral discs are frequent in space crew members after return to Earth. Pre- and post-flight imaging, functional testing, pain questionnaires of ISS crews will ascertain mechanisms of degeneration and injury to spinal structures. 3:15 p.m. Bloomfield S. A. Macias B. R. Lima F. Shirazi-Fard Y. Swift J. M. Hogan H. A. Wiggs M. P. Fluckey J. D. Greene E. S. Allen M. R. Cunningham D. A. Yuen E. Camp K. Braby L. A. Simulating Lunar Surface Missions: Partial Weightbearing and Low Dose/High Energy Radiation Impact on Bone Loss [#4234] Mice exposed to partial weightbearing (1/6G) and modeled galactic cosmic radiation (300 MeV 28Si) or reference x-ray radiation in acute or fractionated doses exhibit loss of bone. Effects of radiation on bone mass vary by weightbearing status and type of radiation. 3:30 p.m. Spatz J. M. Fields E. E. Yu E. W. Divieti Pajevic P. Bouxsein M. L. Sibonga J. D. Zwart S. R. Smith S. M. Retrospective Study of Serum Sclerostin Measurements in Bed Rest Subjects [#4048] Key words: bone loss, sclerostin, disuse, bed rest, immobilization, bone density. 3:45 p.m. Hanson A. M. Rice A. J. Wilt G. L. Gilkey K. G. Grodsinsky C. M. Cavanagh P. R. Monitoring Mechanical Stimulus to Bone in Simulated Lunar and Martian Activities [#4233] Subjects performed activities in simulated martian and lunar gravities to test an activity monitoring system (AMS) which has application in exercise prescription and activity recognition. 4:00 p.m. Qin Y-X. Cheng J. Bi L. Pritz M. Ferreri S. Rubin C. Lin W. Quantitative Ultrasound Bone Diagnosis and Guided Therapy for Fracture Healing [#4225] To evaluate the efficacy of a scanning confocal acoustic navigation (SCAN) system for bone quality and fracture assessment in interested region; and to test guided ultrasound in acceleration of fracture healing in a hindlimb suspension model. 4:15 p.m. DISCUSSION