Musckuloskeletal MCQs

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Musckuloskeletal MCQs
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Aneurysmal Bone Cyst (ABC)
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Aneurysmal Bone Cyst (ABC)
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Respect epiphyseal plate
soap-bubble
Almost invesible cortex
Thin internal trabeculations
Expansile lesion
No periosteal reaction except in case of fracture
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Doughnut sign in scintigraphy
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• Aneurysmal Bone cyst
• Occur secondary to fibrous dysplasia
• Can present with scoliosis
• May contain fluid-fluid level at MRI
• Contain calcified matrix
• Doughnut sign at scintigraphy is pathognomonic

(v )
(v )
(v )
(X )
(X )
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Multiple Myeloma
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Mulyiple osteolytic Punched-out lesion
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Mulyiple osteolytic Punched-out lesion
Absence of perilesional sclerosis
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Complicated by pathological fracture
Associated with osteopenia
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PET PET-CT
coronal view
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• Regarding Multiple Myeloma
• It is the commonest 1ry neoplasm of bone
• Generalised osteopenia is a recognised
  appearance
• Scintigraphy over-estimates disaese
  extent
• Lesions becomes scleotic following
  chemotherapy
• Vertebral pedicle destruction is an
  early event

(v )
(v ) in 15
(X ) under estimates
(v ) also following radiotherapy
(X )
(Ref Grainger and Allison pp1913-1915,Daenhartppp
121-122, Chapman 2003pp575-576)
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Rheumatoid arthritis
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Joint deformity
Periarticular osteopenia
Narrowing of the joint spaces
Soft tissue swelling
Joint instability due to ligament rupture
Articular erosion
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High ridding of the humerus
Lateral erosion of the clavicle
Marginal erosion
Narrowing of the glenohumoral joint
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Erosion of the MTP
Lateral deviation of toes , Hammer toes
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ligamentous destruction can result in
atlantoaxial impaction
Erosion of Odontoid process
Pannus proliferation directly compresses the
spinal cord.
Erosion of facet joints
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• Erosion of the lateral 3rd of the clavicle is
  seen in the following
• Rheumatoid arthritis
• Ankylosing spondylitis
• Langerhans cell histiocytosis
• Hypoparathyroidism
• Multiple myeloma

(v )
(X )
(X )
(X ) Hyperparathyroidism
(v )
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Concerning Malignant Bone Lesions
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• Concerning Malignant bone lesion
• Chordoma is most common in the thoracolumbar
  spine
• Fibrosarcoma is the commonest tumour 2ry to
  pagets disease
• Adamantinoma occursin the tibia in over 90 of
  cases
• Angiosarcoma has a soap bubble appearance at
  radiography
• Chondroblastoma are typically found in the
  diaphysis

(X ) 90 in basisphenoid and sacrum
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Sacral Chordoma
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Basisphenoid Chordoma
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• Concerning Malignant bone lesion
• Chordoma os most common in the thoracolumbar
  spine
• Fibrosarcoma is the commonest tumour 2ry to
  pagets disease
• Adamantinoma occurs in the tibia in over 90 of
  cases
• Angiosarcoma has a soap bubble appearance at
  radiography
• Chondroblastoma are typically found in the
  diaphysis

(X ) 90 in basisphenoid and sacrum
(v )
(v )
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Adamantinoma
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• Concerning Malignant bone lesion
• Chordoma os most common in the thoracolumbar
  spine
• Fibrosarcoma is the commonest tumour 2ry to
  pagets disease
• Adamantinoma occursin the tibia in over 90 of
  cases
• Angiosarcoma has a soap bubble appearance at
  radiography
• Chondroblastoma are typically found in the
  diaphysis

(X ) 90 in basisphenoid and sacrum
(v )
(v )
(v)
(X ) they are epiphyseal lesions
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Chondroblastoma
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Thank you