Musculoskeletal Flashcards

1
Q

Most common cause of dwarfism

A

Achondroplasia

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2
Q

Most common cause of lethal skeletal dysplasia

A

Thanatophoric dwarfism

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3
Q

Most common arthritide

A

Osteoarthritis/ Degenerative Joint Disease

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4
Q

Most common site of osteochondrial lesion (osteochondritis dissecans)

A

Medial epidondyle of the knee

2nd MC - dome of talus
3rd MC - Capitellum of the elbow

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5
Q

Most common cause of disuse osteoporosis

A

Post-fracture

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6
Q

Most common cause of osteomalacia

A

Renal osteodystrophy

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7
Q

Most common disease in which osteosclerosis is seen

A

Renal osteodystrophy

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8
Q

Most common presentation of renal osteodystrophy

A

Osteopenia

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9
Q

Most common cause of hyperparathyroidism

A

Renal disease

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10
Q

Most common type of meniscal tear

A

Oblique tear

extending to the inferior surface of the medial meniscus

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11
Q

Most common torn ankle ligament

A

Anterior talofibular ligament

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12
Q

Most common shoulder dislocation

A

Anterior dislocation

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13
Q

Most common spine infection in adults

A

Staphylococcus aureus

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14
Q

Most common neoplastic condition involving the adult spine

A

Vertebral metastases

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15
Q

Most common spinal cord tumor in adults

A

Ependymoma

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16
Q

Most common spinal cord tumor in children

A

Astrocytoma

17
Q

Most common intradural tumor in the thoracic region

A

Meningioma

18
Q

Most common intraspinal mass

A

Schwannoma

19
Q

Most common non-CNS tumor with the highest infiltration rate of the meninges

A

Leukemia

20
Q

Second most common extradural mass

A

Neoplasm

21
Q

Most common site for root avulsion in the spinal canal

A

Cervical spine

22
Q

Most common cause of central canal and lateral recess stenosis

A

Degenerative disease of the facets with bony hypertrophy that encroaches the central canal

23
Q

Most common cause of neuroforaminal stenosis

A

Degenerative joint disease of the facet with bony hypertrophy

24
Q

Most common cause of of encroachment of the lateral recesses

A

Hypertrophy of the superior articular facet from degenerative joint disease

25
Q

Most common pattern of joint space loss in osteodegenerative arthritis

A

Superior migration

26
Q

Most common cervical spine segment involved in osteodegenerative arthritis

A

Intervertebral disc C5-C8

2nd MC - C6 -C7

27
Q

Most common segment of degenerative anterior spondylolisthesis

A

L4-L5 in older women

28
Q

Most common malignant primary bone tumor in children

A

Osteosarcoma

29
Q

Most common malignant soft tissue neoplasm in adults

A

Malignant fibrous histiocytoma (fibrosarcoma)

2nd MC - Liposarcoma

30
Q

Most common rotator cuff tear see on MRI

A

Rim rent tear

31
Q

Most common benign lytic lesion of the phalenges

A

Enchondroma

32
Q

Most common from of Langerhans cell histiocytosis

A

Eosinophilic Granuloma

33
Q

Most common bone lesion

A

Nonossifying fibroma