Osteonecrosis & Osteochondrosis Flashcards
- Insidious disorder leading to destruction of viable periarticular epiphyseal and subchondral bone
- Other name of this condition
- Incidence
- Sex
1, Osteonecrosis
2. Avascular Necrosis
3. 20,000 persons/year
4. Male Predominance
- A condition which a degeneration followed by reossification of non fused epiphyses
- Condition affecting _______.
- Best known variant
- Osteochondrosis
- Children
- Osgood Schlatter Disease
Potential Etiologic Factors for Osteonecrosis
- Traumatic- post ORIF of femoral neck fx
- Non-traumatic
- refers to thebone scintrigraphypattern where there is increased uptake peripherally with a photopenic center.
- This appearance may be seen in a number of cystic lesions including:
- Doughnut sign/lesion
- aneurysmal bone cyst
- giant cell tumor
- simple bone cyst
AVN of the femoral head epiphysis
Legg-Calve Perthes Disease
AVN of the lunate
Kienbock’s Disease
Post traumatic AVN of the vertebral body
Kummell Disease
AVN of the metatarsal head (most common 2nd)
Freiberg’s Disease
AVN of the tarsal navicular
Kohler’s Disease/ Muller-Weiss Syndrome
spontaneous osteonecrosis of the knee
SONK or Ahlback Disease
AVN of the humeral head
Hass Disease
AVN of the talus
Dias Disease
AVN of the medial epicondyle
Adam’s Disease
AVN of distal radial epiphysis
Madelung Disease
AVN of the calcaneus
Sever Disease
AVN of the distal pole of the patella
Sinding-Larsen-Johansson Disease
AVN of pahlangeal epiphysis
Theeman Disease
AVN of the scaphoid
Preiser Disease
AVN of the vertebral end plates
Scheurmann’s Disease
idiopathic AVN of the femoral head in adult
Chandler Disease
AVN of the medial malleolus
Breck’s Disease
