Osteoporosis is characterized most commonly by -a) Fracture vertebrab) Backache c) Bowing of legsd) Abdominal pain
ab
a
ad
bc
Clinical features of osteoporosis 

Osteoporosis is an asymptomatic disorder unless complications (predominantly fractures) occur.
Most common symptom of osteoporosis is back pain secondary to vertebral compression fracture.
Dorso-lumbar spine is the most frequent site.
Other common sites of fracture are lower end radius (Colle's fracture) and fracture neck femur.