Joint Biomechanics
A 42-year-old office worker presents with chronic low back pain exacerbated by prolonged sitting. His spine surgeon discusses the biomechanics of disc loading and how different postures affect intradiscal pressure. The patient asks about ergonomic modifications to reduce disc stress. Regarding intervertebral disc pressures and loading:
Mark each as TRUE or FALSE
Nachemson's classic studies demonstrated that intradiscal pressure varies significantly with posture...
Sitting produces higher disc pressure than standing because the lumbar lordosis is reduced or revers...
Intradiscal pressure is highest when lying supine and lowest during flexion-lifting activities; sitt...
The healthy intervertebral disc distributes load through hydrostatic pressurization of the nucleus p...
Ergonomic recommendations to reduce disc pressure include maintaining lumbar lordosis (lumbar suppor...
Answer the questions to see explanations
Click T (True) or F (False) for each option