Regional osteopenia describes a localized or regional decrease in bone mineral density.
Pathology
Etiology
-
disuse osteopenia (usually aggressive osteoporosis with pseudopermeative pattern)
- immobilization of fractures
- paralyzed segments
- bone and joint infections
-
complex regional pain syndrome (a.k.a. Sudeck atrophy / reflex sympathetic dystrophy syndrome)
- post-traumatic
- post-infective states
- myocardial infarction
- calcific tendinitis
- cervical spondylosis
- infection
- early infectious invasion of the synovium 2
- early osteomyelitis
- tuberculosis
- transient osteoporosis of the hip
- regional migratory osteoporosis
- erosive arthritis, e.g. rheumatoid arthritis
- lytic phase of Paget disease
- early bone infarct
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