C
Core strength
Core strength is the strength and balance of the trunk and hip muscles.
Coronal plane
The coronal plane is an anatomical vertical plane that divides the body into belly and back sections.
Corticosteroid
Corticosteroids are substances originally derived from the adrenal gland, and which function to reduce inflammation. Modern corticosteroids are commercially synthesised.
Cortisone
Cortisone is a steroid-based medication.
Cortisone injection
Injections of 'cortisone' may be given into the knee joint and inflamed areas of the knee to quieten inflammation.
CPM
CPM is an abbreviation for 'continuous passive motion'.
CPM machine
A CPM machine is a device fitted to the leg, usually after surgery, to keep the limb slowly bending and straightening. CPM stands for Continuous Passive Motion. Page updated January 2024 by Dr Sheila Strover (Clinical Editor)
Crabmeat cartilage
Crabmeat cartilage is joint cartilage that has broken down into fibrillated white fronds that resemble crab meat.
Crepitus
Crepitus (in the knees) is a fine crunching noise, usually on bending the knee from standing. Page updated June 2024 by Dr Sheila Strover (Clinical Editor)
Cross trainer
The cross trainer is a commonly-used piece of rehabilitation exercise equipment.