Arab Orthopaedic Board MCQs - Part 27

Which of the following radiologic terms describes a line passing through the two triradiate cartilages, in the pelvis of a child?

Which of the following conditions results from a deficiency in the osteoclastic cell brush border and has a failure of remodeling?

Which of the following conditions when present serves best as a recipient zone for a metastatic focus?

The disease that becomes chronic over the years with continuous flare ups and later with the possible development of squammous cell carcinoma at the lesion site, would be:

Which of the following conditions is least associated with a Compartment syndrome?

Which of the following Cardinal findings or evaluations is least reliable in a patient bound to have a Compartment syndrome?

A patient following a Spine fracture, develops bradycardia with hypotension. The term that best describes his condition would be:

Following an axial compression force, a patient is noted to have a fracture of all arches of the atlas. This is best described as a:

Injuries of the spine leading to paralysis without Radiologic evidence of a fracture and in the past were known to occur in:

A lesion in bone, that often remains quiescent for years and may be followed by a flare up; and on X-rays resembles an Osteoid Osteoma, would be a:

Which of the following reflexes, when present, signifies that the patient is past the stage of spinal shock:

Which of the following fractures of the spine has been most commonly the result of a seat belt injury?

The two most important factors in predicting outcome in patients with Legg-Calvé- Perthes disease were found to be:

Which of the following was found to be the strongest predictor of functional outcome one year after total knee arthroplasty?

Which of the following syndromes is most frequently associated with radial deficiency and thumb hypoplasia?

In hematogenous osteomyelitis of long bones, a single pathogenic organism is almost always recovered from the bone. Which of the following is most commonly isolated in adults?

Which of the following is the most important epidemiological factor in predicting the development of posttraumatic adult respiratory distress syndrome?

Of the following imaging modalities, which was shown to have the best diagnostic accuracy for detection of a loose acetabular component?

Which of the following answers is correct concerning very small asymptomatic stage-I osteonecrotic lesions of the hip?

In a comparison of the clinical results of bone-patellar tendon-bone and double- looped hamstring tendon grafts in reconstruction of the anterior cruciate ligament, what was the most frequently reported symptom in patients treated with the bone-patellar tendon bone graft:

Which of the following is the best indication for including arthrodesis as an adjunct to decompressive surgery for lumbar spinal stenosis?

Absence of which clinical sign or signs most reliably rules out the need to perform radiographic external rotation stress examination of the ankle following isolated fibular fracture?

Spontaneous resolution of asymptomatic osteonecrosis of the femoral head was found to be associated with:

A seventy-year-old woman fell on her outstretched left hand and sustained an extraarticular fracture of the distal part of the radius. Using local anesthesia, you perform a successful, anatomical reduction and immobilize the fracture in a plaster cast. Under what circumstance would you perform a Kirschner wire osteosynthesis?

Regarding Legg-Calvé-Perthes disease and thrombosis, which of the following statements is correct?

A fifty-year-old woman presented with pain and tenderness at the radial styloid of the left wrist of one month’s duration. The pain was aggravated when the thumb was clasped in the palm and the wrist was forced into ulnar deviation. A diagnosis of de Quervain disease was made. The most effective initial treatment of this condition was found to be:

Which branch of the axillary nerve lies closest to the inferior portion of the glenoid rim and is therefore most vulnerable to damage during surgery involving the inferior aspect of the shoulder capsule?

Demineralized bone matrix contains all of the following except:

The elbow has both static and dynamic stabilizers against valgus torque. Muscle- splitting approaches to the medial aspect of the elbow have been developed to help maintain the dynamic stabilizing function of the flexor pronator mass when the medial ulnar collateral ligament is being reconstructed. On the basis of biomechanical studies, which structures are the primary static and dynamic stabilizers, respectively?

All of the following patients might be reasonable candidates for a proximal femoral valgus-producing intertrochanteric osteotomy, EXCEPT:

The optimal method for diagnosing osteonecrosis in asymptomatic patients is:

Which of the following represents the most likely change in the gap detection threshold six weeks after a carpal tunnel release?

Which of the following factors is the most important when selecting a patient with high-grade metaphyseal osteosarcoma of the knee for a partial epiphyseal preservation?

The major disadvantage of the technique of lengthening of long bones over an intramedullary nail is:

Rotator cuff repair in patients fifty years of age and younger is associated with long term improvement in which of the following clinical parameters?

If an os acromiale is obscured on the optimal single radiographic view, it can be detected on which of the following combinations of radiographic views of the shoulder?

The factor most likely to be associated with a poor long-term outcome following proximal row carpectomy is:

Which of the following molecules is a marker of chondrocyte dedifferentiation following human autologous chondrocyte transplantation?

Which of the following factors is the main reason for loss of elbow and forearm strength following radial head resection because of a comminuted fracture of the radial head?

Which of the following medications, when given intra-articularly, has been shown to be most effective in reducing postoperative pain following anterior cruciate ligament reconstruction?

Which of the following restrictions was found to be the most important in preventing early dislocation following total hip arthroplasty?

When patients with lower-extremity sarcoma were treated with limb-salvage surgery combined with high-dose postoperative external beam radiation therapy, they were noted to have:

You make a diagnosis of posterior dislocation of the shoulder in a male patient within twenty-four hours after the injury. Radiographs show a small humeral head defect. All of the following statements are true, except:

Which of the following is considered to be the gold-standard suturing technique for meniscal repair?

Following total hip arthroplasty with a metalon-metal articulation, hypersensitivity reactions to wear and repassivation products may develop in some patients. If hypersensitivity is established as the cause of bursa formation, pain, or bone resorption, a surgeon should consider:

Which factor is least associated with patient satisfaction following surgical repair of the rotator cuff?

When liquid gentamicin is added to cement, all but one of the following statements are true:

The effect of bisphosphonates in patients undergoing total hip and knee arthroplasty is best described as follows:

When a young patient with “cam-type” femoroacetabular impingement is treated with surgical resection of the head-neck junction, how much bone can be safely resected without significantly weakening the femoral neck?

In a comparison of computed tomography and plain radiography for the assessment of periacetabular osteolysis following total hip arthroplasty, it was found that computed tomography has: