Why does prolonged immobilization after a bone fracture delay complete recovery more in adults compared to children?

💡 Explanation

In adults, bone remodeling depends heavily on mechanical loading to stimulate osteoblast activity. Immobilization reduces mechanotransduction, hindering bone remodeling and delaying recovery, because the piezoelectric signals are reduced. Therefore, remodeling is less efficient than in children, rather than increased osteoclast activity or cartilage content being the primary factor.

• If a patient consistently maintains high urine pH while taking calcium supplements, which consequence affecting kidney stone formation is most likely?
• Why does bariatric surgery often cause type 2 diabetics to rapidly reduce or eliminate their need for insulin injections?
• An elderly patient with declining muscle mass undergoes intense aerobic training; which outcome becomes more likely as increased mitochondrial activity occurs?
• A patient with severe peripheral artery disease experiences increased blood viscosity in the lower limbs. Which mechanism explains why this increased viscosity diminishes the effectiveness of vasodilators?
• A patient takes a non-steroidal anti-inflammatory drug (NSAID) after a minor tissue injury. Which effect dominates regarding inflammation and pain modulation?
• Why does a patient with longstanding type 2 diabetes often require increasing insulin dosages to manage blood glucose levels, despite initially responding to lower doses?