A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

opposition
see Terms of Movement

Osgood-Schlatter Disease
A common knee disorder in teenage boys, results from the chronic avulsion of the tibial tubercle, a bony prominence on the tibia.
Symptoms include knee pain with range of motion, especially against resistance. Knee pain is often worse after prolonged physical activity.

osteitis
Inflammation of bone

osteochondritis dissecans
A type of osteochondritis in which articular cartilage and associated bone becomes partially or totally detached to form joint loose bodies. Affects mainly the knee, ankle, and elbow joints.

osteomalacia
A condition marked by softening of the bones (due to impaired mineralisation, with excess accumulation of osteoid), with pain, tenderness, muscular weakness, anorexia and loss of weight, resulting from deficiency of vitamin D and calcium.

osteomyelitis
Inflammation of bone caused by a pyogenic organism. It may remain localised or may spread through the bone to involve the marrow, cortex, cancellous tissue and periosteum.

osteoporosis
A reduction in the amount of bone mass, leading to fractures after minimal trauma.