Orthopaedics 10 MCQs - 1

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1. A 22-year-old medical student was slightly intoxicated and fell onto his extended wrist while his forearm was pronated. He has pain and a clicking sensation on the ulnar side of his wrist. X-rays and nerve conduction studies are normal. The most likely diagnosis is?

Scapholunate dissociation.

Triangular fibrocartilage complex (TFCC) tear.

Piso-triquetral subluxation.

Extensor carpi ulnaris (ECU) subluxation.

2. A 26-year-old builder underwent an L4–L5 discectomy 12 months ago. He continues to experience pain in his right leg. Systemically he is well in himself. Gadolinium enhanced MRI scans showed enhancement adjacent to the right L5 root. There is no fluid collection. What is the most likely diagnosis?

L4–L5 discitis.

Recurrent right L4–L5 disc herniation.

Schwannoma of the right L5 root.

Right L5 perineural fibrosis.

3. All of the following contribute to the wrist and hand deformity in rheumatoid arthritis except?

Volar subluxation of the extensor carpi ulnaris (ECU).

Radio-scapho-capitate ligament failure.

Scaphoid extension.

Supination of the carpus on the forearm.

4. Avulsion of which ligament off its humeral insertion has historically been associated with recurrent instability and may require open repair?

Inferior glenohumeral.

Middle glenohumeral.

Superior glenohumeral.

Coracohumeral.

5. What is the predominant source of femoral head perfusion?

Lateral circumflex artery.

Descending branch of lateral circumflex artery.

Medial circumflex artery.

Obturator artery.

6. Which of the following is considered to be the primary stabilizer of knee to external rotation?

Anterior cruciate ligament (ACL).

Posterior cruciate ligament (PCL).

Medial collateral ligament (MCL).

Lateral collateral ligament (LCL).

7. A 27-year-old banker injures his foot and sustains a displaced divergent Lisfranc fracture-dislocation. The optimal management would consist of?

Closed or open reduction and combined screw and K-wire stabilization.

Closed or open reduction and screw stabilization.

Closed or open reduction and K-wire stabilization.

A bridging external fixator.

8. All of the following are features of giant cell tumour of bone except?

The most common site in the axial skeleton is the sacrum.

Located in an eccentric position along the long axis of a bone.

Cross the physis.

Metastasize to lung.

9. Which of the following is the most sensitive clinical sign for detection of developmental dysplasia of the hip (DDH) in a baby aged 6 months?

Barlow’s test

Ortolani’s test.

Limited hip abduction in flexion.

Asymmetric skin folds in the thighs.

10. Which of the following is not true of tibialis posterior tendon dysfunction?

It is associated with the ‘too many toes’ sign.

It has been classified by Johnson and Strom.

Operative treatment may involve a medial displacement calcaneal osteotomy.

A University of Colarado Biomechanics Laboratory orthosis is often effective treatment.

Orthopaedics 10 MCQs – 1

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