Arab Orthopaedic Board MCQs - Part 9

Quadriceps muscle relaxation during the stance phase “the arc of terminal extension,” occurs at:

During weight bearing on a flexed knee (15°), the quadriceps muscle force required to stabilize the knee is:

All the following are risk factors for limitation of motion of knee during ligamentoplasties, except:

A test performed by having the patient clench his or her thumb in a fist, followed by brisk deviation of the wrist ulnarly, elicits pain over the first dorsal compartment of the wrist, is known as the:

A number of factors have been implicated in the process in the development of osteonecrosis of the hip except:

Alcohol and corticosteroids most likely induce osteonecrosis of the hip by:

What should the “Kerboul angle” be in a patient with osteonecrosis of the hip, to favor a good prognosis:

The most accurate imaging for detection of acute discitis in a child, would be:

A 6 year old boy presents with acute pain in the cervical spine region. He was noted to have stiffness, and local tenderness in the cervical region and an elevated temperature (38.0 deg centigrade). Lab studies revealed, an increased sedimentation rate (35mm/1hr), and a WBC of 10000/ HPF, your most likely diagnosis would be:

All the following favor the diagnosis of scheuermanns disease, except:

Scheuermann’s disease of the thoracolumbar region has been associated has been associated mostly with which of the following conditions:

Which of the following benign tumors is most likely to lead to a gradual replacement of the vertebral body and gradual weakening and could precipitate a sudden collapse of the vertebral body and bleeding, initiating the onset of pain, in a child:

In children, the most common skeletal metastases to the spine, would be:

The most common soft tissue tumor to metastasize to the spine, in a child would be:

The primary blood supply for the femoral head, particularly the weight-bearing portion would be:

Which of the following anatomic variations in the proximal femur, is a risk factor for traumatic posterior hip dislocation:

Which of the following tendons have been reported to block reduction of a posterior dislocation of the hip:

The preferred approach to fix a fracture of the femoral head, when associated with a posterior dislocation, would be:

The factor that has contributed most (at the present date) to the increased rate of to tuberculosis is:

The most frequent bone to be involved with tuberculosis, would be:

In Tuberculosis, fusion of numerous epithelioid cells are believed to form:

Which of the following is most diagnostic of Tuberculosis:

Which of the following is not a cranial tong used in cervical traction:

While inserting the Halo screws in the region of the eyebrow, which of the following nerves could be injured:

What area of the skull is weakest for insertion of a Halo screw?

The “belly press test” “Napoleon sign” is used to evaluate which of the following muscles:

The “lift off test” is used to evaluate which of the following muscles:

Which of the following findings by MRI, when if present would indicate a poor prognostic sign for a successful repair of the subscapularis tendon?

Should a patient present to your clinic with anterior shoulder pain with a good range of motion. You also note that this patient has excessive external rotation on comparing one shoulder with the opposite side. Which of the following muscles are likely to be ruptured:

During the first 4 degrees of knee flexion, the patella tilts:

A 30 year old male presents to your clinic with worsening of his anterior knee pain following a lateral retinacular release. The most likely cause would be:

Which of the following muscles, while under normal function, contribute to 25% of the energy absorption on the lower extremity, during landing:

Patellar instability is most commonly associated with:

The sensation of knee collapsing or giving way in flexion is least caused by:

Free nerve endings have been associated with anterior knee pain. These are concentrated least in which of the following locations:

Which of the following structures is aneural in the knee?

Which of the following ligaments is the strongest in the knee:

In “Pavlik disease”, secondary to the use of a Pavlik hareness implies damage to which of the following anatomic locations:

The posterior sag test is used to evaluate which of the following structures:

Which of the following muscles about the knee has ligamentous extensions into the medial meniscus and is involved in moving the meniscus posteriorly during flexion:

Which of the following muscles about the knee, has extensions into the oblique popliteal ligament and adds to lateral capsular stability to the knee:

Should the posteromedial capsular structures of the knee be injured and torn, which of the following ligaments, would be at most risk for secondary injury?

Through which of the following ligaments does the knee rotate in its long axis during the screw home movement?

When the meniscofemoral segments of the knee alone are disrupted, which of the following structures would prevent anterior displacement of the tibia?

The iliotibial band extends from the iliac crest to the knee. In the knee region it attaches to all the following structures, except:

Which of the following muscles lies mostly intrarticular within the knee joint:

The ligament that extends from the the posteromedial wall of the intercondylar notch and attaches to the posterior horn of the lateral meniscus is known as the:

The fabellofibular ligament is an extension of which of the following tendons?

When the lateral collateral ligament and the posterolateral corner of the knee are torn, which of the following structures is most likely to be recruited to resist varus stress, while in extension?

When the lateral collateral ligament and the posterolateral corner of the knee are torn, which of the following structures is most likely to be recruited to resist varus stress, while beyond 45 degrees of flexion?