Trauma Practice Questions

Q: What is the common term for Medial epicondylitis?

Golfer's elbow. **Explanation:** **Medial epicondylitis**, commonly known as **Golfer's elbow**, is an overuse injury characterized by inflammation and micro-tearing at the common flexor origin on the medial epicondyle of the humerus. It primarily involves the **Pronator teres** and **Flexor carpi radialis** muscles. The condition results from repetitive wrist flexion and forearm pronation, common in golfers, pitchers, and manual laborers. **Analysis of Options:** * **Option A (Correct):** Golfer's elbow is the clinical eponym for medial epicondylitis. * **Option B (Incorrect):** **Tennis elbow** refers to **Lateral epicondylitis**, involving the common extensor origin (specifically the *Extensor Carpi Radialis Brevis*). * **Option C (Incorrect):** Elbow dislocation is a traumatic joint disruption, most commonly occurring in a posterior direction. * **Option D (Incorrect):** Ligament sprain refers to a stretch or tear of ligaments (like the Ulnar Collateral Ligament), which is a distinct pathology from the tendinopathy seen in epicondylitis. **Clinical Pearls for NEET-PG:** * **Clinical Test:** Pain is elicited by **resisted wrist flexion** and forearm pronation. * **Nerve Involvement:** The **Ulnar nerve** runs in the cubital tunnel posterior to the medial epicondyle; chronic medial epicondylitis can sometimes lead to ulnar neuropathy. * **Treatment:** Primarily conservative (Rest, NSAIDs, eccentric strengthening). Corticosteroid injections are reserved for refractory cases. * **Mnemonic:** **M**edial = **M**anual/Flexion (**G**olfer); **L**ateral = **L**ift/Extension (**T**ennis).

Q: What are the clinical manifestations of Klumpke's paralysis?

Intrinsic hand muscle weakness. **Explanation:** Klumpke’s paralysis is a lower brachial plexus injury involving the **C8 and T1** nerve roots. It typically occurs due to hyperabduction of the arm (e.g., a person falling from a height and clutching a tree branch or during a breech delivery). 1. **Why the correct answer is right:** The T1 nerve root provides the primary motor supply to the **intrinsic muscles of the hand** (interossei, thenar, and hypothenar muscles) via the ulnar and median nerves. Damage to these roots leads to profound weakness and atrophy of these muscles, resulting in a characteristic **"Claw Hand"** deformity (hyperextension at the MCP joints and flexion at the IP joints) due to the unopposed action of long extensors and flexors. 2. **Why the incorrect options are wrong:** * **Option A & C:** "Waiter’s tip" deformity (arm adducted, internally rotated, elbow extended, and wrist flexed) is the hallmark of **Erb’s Palsy**, which involves the upper brachial plexus (**C5-C6**). * **Option D:** Isolated elbow extension is not a specific clinical sign for either palsy; in Erb’s, the elbow is extended due to paralysis of the Biceps (C5-C6), but it is accompanied by other postural changes. **High-Yield Clinical Pearls for NEET-PG:** * **Horner’s Syndrome:** Often associated with Klumpke’s paralysis if the T1 root is avulsed proximal to the sympathetic chain (miosis, ptosis, and anhidrosis). * **Sensory Loss:** Occurs along the ulnar aspect of the forearm and hand (medial border). * **Erb’s vs. Klumpke’s:** Erb’s is much more common and involves the "Police officer's tip" position, whereas Klumpke’s is rarer and focuses on distal hand disability.

Q: The mechanism of injury of a transverse fracture of the medial malleolus most commonly results from which of the following forces?

Direct force. **Explanation:** In ankle fractures, the orientation of the fracture line on the malleolus is a direct indicator of the mechanism of injury, based on the **Lauge-Hansen classification**. 1. **Why "Direct Force" is correct:** A **transverse fracture** of the medial malleolus typically occurs due to a **direct blow** to the bone or, more commonly in a clinical context, as an **avulsion injury**. When an abduction or external rotation force is applied, the deltoid ligament pulls on the medial malleolus, "snapping" it transversely. However, among the provided options, a pure transverse fracture line (without associated fibular involvement) is classically associated with direct trauma or avulsion. 2. **Why other options are incorrect:** * **Adduction Force (B):** This produces a **vertical or oblique fracture** of the medial malleolus. As the talus shifts medially, it "pushes" against the medial malleolus, causing a vertical shear fracture. * **Abduction (A) and External Rotation (C) Forces:** These forces typically result in a **transverse avulsion fracture** of the medial malleolus *associated* with a high or spiral fracture of the fibula (e.g., Pott’s fracture). If the question implies an isolated transverse fracture without syndesmotic injury, direct force is the most straightforward mechanism. **Clinical Pearls for NEET-PG:** * **Vertical Fracture of Medial Malleolus:** Think **Adduction** (Sander-Lauge: Supination-Adduction). * **Transverse Fracture of Medial Malleolus:** Think **Avulsion** (Abduction/External Rotation) or **Direct Force**. * **Pott’s Fracture:** Bimalleolar fracture caused by abduction-external rotation. * **Cotton’s Fracture:** Trimalleolar fracture (Medial, Lateral, and Posterior malleolus). * **Maisonneuve Fracture:** Proximal fibular fracture associated with a medial malleolar avulsion or deltoid ligament tear; always palpate the proximal fibula in ankle injuries.

Q: Following nerve injury, at what rate does the injured nerve regenerate?

0.1 cm/day. **Explanation:** The correct answer is **0.1 cm/day (Option B)**. Following a peripheral nerve injury (specifically Seddon’s Axonotmesis or Sunderland’s Grade II-IV), the distal segment undergoes **Wallerian degeneration**. Once the debris is cleared, the proximal axon begins to sprout and regenerate along the preserved endoneurial tubes. In clinical practice, the standard accepted rate of axonal regeneration is approximately **1 mm per day**. Converting this to centimeters: * 1 mm = 0.1 cm * Therefore, the rate is **0.1 cm/day**. **Analysis of Incorrect Options:** * **Option A (0.001 cm/day):** This equals 0.01 mm/day, which is far too slow to be clinically significant. * **Option C (1 cm/day):** This equals 10 mm/day. This is an overestimation; while regeneration can occasionally reach 2-3 mm/day in proximal segments, 10 mm/day is physiologically impossible for human nerves. * **Option D (0.0001 cm/day):** This is an infinitesimal rate (0.001 mm/day) and does not represent biological growth. **High-Yield Clinical Pearls for NEET-PG:** 1. **Tinel’s Sign:** This is used to track regeneration. A positive Tinel’s sign (tingling on percussion) at a site distal to the injury indicates the presence of regenerating axonal sprouts. 2. **Order of Recovery:** Nerve recovery typically follows a specific sequence: **Sympathetic function → Pain → Temperature → Touch → Proprioception → Motor function.** 3. **Hoffmann-Tinel Sign:** If the distal point of tingling advances by roughly 1 mm/day, it indicates successful progression of regeneration. 4. **Factors:** Regeneration is faster in children and in proximal injuries compared to distal ones.

Question 1

Which of the following statements about eponymous fractures are true?

Accepted Answer

Pott's fracture is a trimalleolar ankle fracture.

Answer

Monteggia fracture is a fracture of the proximal third of the ulna with radial head dislocation.

Answer

Galeazzi fracture is a fracture of the distal third of the radius with dislocation of the distal radio-ulnar joint.

Answer

Colles fracture is a fracture at the cortico-cancellous junction of the distal end of the radius with dorsal tilt.

Question 2

What is an absolute contraindication for tooth extraction when related to a fracture line?

Accepted Answer

None of the above.

Answer

Tooth related to pericoronitis

Answer

Tooth interferes with reduction of fracture.

Answer

Avulsed tooth.

Question 3

What is the common term for Medial epicondylitis?

Accepted Answer

Golfer's elbow

Answer

Tennis elbow

Answer

Elbow dislocation

Answer

Ligament sprain

Question 4

Limb salvage primarily depends on which of the following factors?

Accepted Answer

Vascular injury

Answer

Skin cover

Answer

Bone injury

Answer

Nerve injury

Question 5

In which of the following clinical scenarios is a prosthesis at the head of the femur typically applied?

Accepted Answer

A 65-year-old male with a non-united fracture of the femoral neck.

Answer

A 40-year-old male with a fracture of the femoral head.

Answer

A 40-year-old male with a fracture of the femoral neck.

Answer

A 40-year-old male with a posterior dislocation of the hip.

Question 6

Which of the following represents Bumper's fracture?

Accepted Answer

Comminuted, depressed fracture of the lateral tibial condyle

Answer

Comminuted fracture of vertebral body

Answer

Comminuted intra-articular fracture of distal tibial end

Answer

Avulsion fracture of the base of 5th metatarsal

Question 7

What are the clinical manifestations of Klumpke's paralysis?

Accepted Answer

Intrinsic hand muscle weakness

Answer

Water-tip deformity

Answer

Elbow extended and wrist extended

Answer

Only elbow is extended

Question 8

The mechanism of injury of a transverse fracture of the medial malleolus most commonly results from which of the following forces?

Accepted Answer

Direct force

Answer

Abduction force

Answer

Adduction force

Answer

External rotation force

Question 9

Following nerve injury, at what rate does the injured nerve regenerate?

Accepted Answer

0.1 cm/day

Answer

0.001 cm/day

Answer

1 cm/day

Answer

0.0001 cm/day

Question 10

A 50-year-old female presents with pain in the left hip and inability to walk following a fall. On examination, there is tenderness in the Scaepa's triangle. What is the most likely diagnosis?

Accepted Answer

Intracapsular neck of femur fracture

Answer

Intertrochanteric fracture femur

Answer

Transervical fracture neck of femur

Answer

Ischial tuberosity fracture

Trauma — MCQs

Trauma — MCQs

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