compression fracturenoun [ C or U ]
uk/kəmˈpreʃ.ən ˌfræk.tʃər//kəmˈpreʃ.ən ˌfræk.tʃɚ/specializedin injury in which several of the bones in the back collapse:
a lumbar/spinal/vertebral compression fracture
The most common cause of compression fracture is osteoporosis, a thinning of the bone with age.