Arab Orthopaedic Board MCQs - Part 19

The most frequent site of Ewing’s sarcoma of the spine would be, in which of the following regions:

Which of the following lesions are known to metastasize to the spine in children:

Plain radiographs of thoracic spine in a child with back pain shows thin and absent pedicles in adjacent regions, and widening of the intervertebral foramen, and scoliosis with rotation. Your most likely presumptive diagnosis would be:

A child is noted to have a large head, short neck; dwarfism; kyphoscoliosis; hepatosplenomegaly; cardiac valvular abnormalities; coronary artery disease; severe mental retardation; prone to respiratory infections; pulmonary hypertension; usually die before 10 years of age from respiratory and cardiac failure, would be:

Congenital muscular torticollis may occur in all the following conditions except:

The presence of calcified deposits delineating the nucleus pulposus on a lateral radiograph of the cervical spine and the presence of torticollis and may be associated with fever is best treated by:

A combination of ligamentous laxity and congenital abnormalities of the craniovertebral junction (50%) predisposes children with Down syndrome to atlantoaxial and occipitocervical instability. Should one decide to operate and stabilize this instability, what should the surgeon least expect:

A 5 year old boy with a short, broad neck; low hairline; and restricted cervical motion would be most likely to be diagnosed as:

Aplasia and hypoplasia of the odontoid occur routinely in a variety of skeletal dysplasias, and occurs most notably in:

A radiographic measurement based on ossification of the iliac apophysis, in scoliosis would be:

The degree of rotation in an idiopathic scoliotic curve would be:

Progression of a curve formation following fusion in a child for scoliotic correction, is known as a:

Adams forward-bending test is most useful in:

In the thoracic spine the scoliometer is used to assess:

Lateral trunk shift in scoliosis is measured by:

Under normal circumstances, the vertebral artery can be compromised with rotation, thus collapsing the contralateral vertebral artery. The amount of rotation would be:

Compression of the subclavian artery may arise from all with the exception of:

Arm pain, cold limb, supraclavicular region pain, and paresthesias is suggestive of:

The nerve supply of the deltoid muscle would be:

Wrist extension is predominantly mediated by the extensor carpi ulnaris and radialis which is supplied by which of the following nerve roots:

A positive test elicited during acute cervical flexion that produces a sudden electrical tingling or shocks down the spine and/or extremities is:

A test used with the patient in the sitting position, and the examiner instructs the patient to place his hand over his head – thus keeping his arm in abduction is known as:

Low back pain radiating in the buttock, thigh, calf, and foot that does not originate from the lumbosacral plexus and/or from disc herniation and pain is made worse with activity such as prolonged sitting and walking is caused by a

The pyriformis muscle obtains its nerve supply from:

In the piriformis syndrome, the examination confirming its presence is when:

A test used to confirm the presence of lumbar discopathy, would be:

All the following are known to cause spinal stenosis, Except:

Which of the following is most important, which when divided or resected would allow maximum seating of the femoral head within the acetabulum, following reduction of a high riding DDH:

In what way does femoral shortening ease best the reduction of a high riding hip in DDH:

Should a flat acetabulum be present in patients with DDH (2-5years), the best surgical management would be:

An eight year old male with a Herring B/C hip is best treated with:

In Legg-Calve’-Perthes disease ending with a Stulberg IV deformity is most likely to:

To distinguish between both hips being involved in patients with Gaucher’s disease and Legg Perthes (LCP) disease is that:

Any child presenting with severe back pain involving the whole spine prior to the age 6 years should be investigated for:

An osteoid osteoma when located in the spine results in scoliosis that occurs at the wrong time and place. When so, the nidus is found in the:

The organism that most likely results in discitis is:

Following traumatic dislocation of the patella, the structure when injured would Most likely result in recurrent patella dislocation is:

In adolescents, the most likely mechanism of injury to the lumbosacral spine, that could lead to a spondylolysis, would be:

In acquired flat foot in an adult the tendon that is usually involved would be:

The parents of a 13 year old boy known to have tuberculosis, notice swelling in upper right buttocks. He was presumed to have migration of the abcess posteriorly. This would be through which path:

A ten year old boy presented with low back pain. Plain xrays revealed flattening of the vertebral bodies at level L2 and L4. Your first diagnosis would be:

When a Margeryl transarticular screw is inserted between C1-2 and is slightly long and passes anterior through the C1 facet, may lead to a unilateral deviation of the tongue. Which of the following nerves is injured:

During anterior spinal surgery, the left vertebral artery was injured. Should the artery be ligated, it is associated with what incidence of brain stem infarction:

During anterior spinal surgery when the esophagus is injured and detected 48 hours postoperatively the mortality risk is estimated to be:

Which of the following cervical vertebrae, the pedicle is of sufficient diameter to allow the insertion of a pedicle screw:

The differential diagnosis of most bone tumors is derived from which of the following:

Patients with osteoid osteomas are known to have pain the explanation given, would be:

With which of the following lesions is osteoid osteoma similar on pathologic evaluation:

Telangiectatic osteosarcoma is most commonly confused with:

A focus of mature compact (cortical) bone within the cancellous bone is known to occur in: