Osteoporotic Hip Fracture 

Background:

Mode of Injury (MOI) = Trauma – Usually falls.

Pain mechanism = Nociceptive local / Nociceptive referred.
Pathomechanics =  Myogenic.

A condition in which reabsorption by osteoclasts outpaces bone deposition by osteoblasts.  A fracture usually occurs due to a reduction in bone mass density (BMD). This can increase the brittleness of the bone. Increased brittleness is due to a decrease in the rate of protein synthesising collagen fibres (collagen gives bone its tensile strength).

A decreased bone mass is usually due to the loss of calcium in the bone matrix.

A decrease in BMD can be due to:
Endocrine dysfunction
Dietary deficiency
Medication use

Osteoporosis can lead to fragility fractures (low trauma fractures). Approx. 10% of the bone is remodelled yearly in healthy patients, however patients who suffer from osteoporosis, there is a lack of remodelling.

The majority of the weight travels through the hips and knees if can result in increased pressure in those areas.
There are 2 types of osteoporosis:
Primary = No known cause – calcium imbalance.
Secondary = Secondary to diseases such as hyperthyroidism, diabetes, chronic alcohol use or prolonged medication use.