Injuries and Their Significance Practice Questions

Q: What does the term 'Falanga' refer to?

Hitting the feet with a stick. **Explanation:** **Falanga** (also known as *falaka* or *bastinado*) is a form of torture involving repeated strikes to the soles of the feet using a blunt object, such as a stick, rod, or cable. **Why Option B is correct:** In forensic medicine, Falanga is categorized under **custodial torture**. The soles of the feet are targeted because they contain a dense network of nerves and vessels protected by a thick layer of subcutaneous fat. While it causes excruciating pain and can lead to "closed compartment syndrome," it often leaves minimal external marks (like bruising or lacerations) once the initial swelling subsides, making it difficult to prove in court. **Why other options are incorrect:** * **Option A (Pulling of hair):** This is known as **Trichotorture**. It can lead to traumatic alopecia or subgaleal hematomas but is distinct from Falanga. * **Option C (Application of electric current):** This refers to **Electro-torture**. A common specific method is the use of a 'Picana' (an electric prod). * **Option D (Sitting in an abnormal position):** This refers to **Positional Torture**. Examples include the 'Telephono' (hitting both ears) or 'Strapado' (suspension by the arms), but not Falanga. **High-Yield Clinical Pearls for NEET-PG:** * **Diagnostic Sign:** Chronic Falanga can lead to **aponeurotic fibromatosis** or myofascial pain syndrome. * **Imaging:** MRI or Ultrasound of the soles may show thickening of the plantar fascia and loss of the normal heel fat pad architecture. * **Other Custodial Terms:** * *Telephono:* Slapping the ears (may cause tympanic membrane rupture). * *Dry Submarining:* Suffocation using a plastic bag. * *Wet Submarining:* Near-drowning in contaminated water.

Q: Which among the following sites is involved in an "underminer's fracture"?

Cervical spine. **Explanation:** The **Underminer’s fracture** is a specific type of injury involving the **cervical spine**. It is typically seen in pedestrians involved in road traffic accidents (RTA). When a vehicle strikes a pedestrian, the impact often causes the victim to be thrown onto the bonnet or the ground. The mechanism involves a sudden, forceful hyperextension or hyperflexion of the neck, leading to fractures of the cervical vertebrae (most commonly C2 or the "axis"). It is named so because the force "undermines" the stability of the spinal column. **Analysis of Options:** * **Cervical Spine (Correct):** This is the classic site for underminer's fractures due to the high mobility and vulnerability of the neck during rapid deceleration or impact in pedestrian accidents. * **Skull (Incorrect):** While skull fractures (like Pond, Ring, or Diastatic fractures) are common in RTAs, they are not referred to as underminer’s fractures. * **Pelvis (Incorrect):** Pelvic fractures in RTAs are usually "crush" injuries or "open-book" fractures resulting from direct lateral or anteroposterior impact. * **Mandible (Incorrect):** Mandibular fractures are common in physical assaults or chin-first falls but do not involve the mechanism described for underminer's injuries. **High-Yield Clinical Pearls for NEET-PG:** * **Bumper Fracture:** A fracture of the upper tibia/fibula caused by the direct impact of a vehicle's bumper. * **Fender Fracture:** A fracture of the lateral tibial plateau. * **Run-over Injuries:** Characterized by "flaying" of the skin (avulsion) and internal organ crushing without significant external marks. * **Whiplash Injury:** A soft tissue injury of the cervical spine common in rear-end collisions, distinct from the bony fracture seen in "underminer's."

Q: A lathi can cause all of the following injuries, except:

Incised wound. **Explanation:** The core concept here is the distinction between **blunt force** and **sharp force** trauma. A lathi is a heavy, blunt wooden stick. It produces injuries through impact and compression rather than slicing. **1. Why "Incised Wound" is the correct answer (The Exception):** An **incised wound** is caused by a sharp-edged weapon (like a knife or scalpel) that slices through the skin and underlying tissues. Since a lathi lacks a sharp cutting edge, it cannot produce a true incised wound. **2. Analysis of Incorrect Options:** * **Contusion (Bruise):** This is the most common injury caused by a lathi. The blunt impact ruptures small capillaries under the skin without breaking the surface. A lathi often produces "tramline bruises" (two parallel lines of hemorrhage with central clearing). * **Fissured Fracture:** Blunt force from a lathi, especially on the skull, can cause a linear or fissured fracture where the bone cracks along a line due to the mechanical stress of the impact. * **Incised-looking Lacerated Wound:** This is a high-yield concept. When a lathi strikes an area where the skin is stretched over a bony prominence (e.g., scalp, shin, or forehead), the skin is crushed and split. Because the edges may appear clean and linear, it mimics an incised wound. However, microscopic examination will show crushed hair follicles and tissue bridges, confirming it is a laceration. **Clinical Pearls for NEET-PG:** * **Tramline Bruises:** Pathognomonic for impact from a long, cylindrical object like a lathi or ruler. * **Tissue Bridges:** The presence of nerves, vessels, and fibers crossing the gap is the hallmark of a **laceration**, distinguishing it from an incised wound. * **Lathi Blows:** Usually result in injuries categorized as "hurt" or "grievous hurt" depending on the site and severity (fractures).

Q: A 'patterned' abrasion is a variety of which type of abrasion?

Pressure abrasion. **Explanation:** **1. Why Pressure Abrasion is Correct:** A **pressure abrasion** (also known as a crushing or impact abrasion) occurs when an object is pressed vertically onto the skin with sufficient force to crush the epidermal layers without significant lateral movement. Because the force is perpendicular, the skin retains the exact imprint of the offending object. This makes it a **'patterned' injury**, providing crucial forensic evidence regarding the shape, size, and surface characteristics of the weapon (e.g., tire marks, radiator grille patterns, or the weave of a fabric). **2. Why Other Options are Incorrect:** * **Linear Abrasion (A):** Also known as a scratch, this is caused by a sharp-pointed object (like a needle or nail) passing across the skin. While it shows directionality, it does not replicate the "pattern" of a broad object. * **Sliding Abrasion (C):** Also called grazes or brush burns, these occur when the skin slides against a rough surface (e.g., road rash). These are characterized by "epithelial tags" that indicate the direction of force, but the friction usually destroys the specific pattern of the surface. * **Superficial Bruise (D):** A bruise (contusion) is an infiltration of blood into the subcutaneous tissues due to the rupture of capillaries. While some bruises can be patterned (e.g., "beating" marks), a bruise is not a type of abrasion (which is a surface epithelial injury). **Clinical Pearls for NEET-PG:** * **Post-mortem vs. Ante-mortem:** Pressure abrasions can be produced after death (e.g., during rough handling), but they will lack the vital reaction (redness/scabbing) seen in ante-mortem injuries. * **Graze Direction:** In sliding abrasions, the **epithelial tags** are found at the *end* of the wound, pointing towards the direction from which the force came. * **Ligature Mark:** A ligature mark in hanging or strangulation is a classic example of a **patterned pressure abrasion**.

Q: An incised wound on the genitalia is commonly associated with which of the following?

Homicides. **Explanation:** **Correct Answer: C. Homicides** Incised wounds on the genitalia are almost exclusively **homicidal** in nature. In forensic pathology, these are categorized as **"Injuries of Revenge"** or **"Crimes of Passion."** They are typically motivated by extreme jealousy, sexual frustration, or infidelity. The act of emasculation (removal of the penis/testes) or mutilation of female genitalia is a symbolic attempt to "de-sexualize" or punish the victim. **Why other options are incorrect:** * **Accidents:** The anatomical location of the genitalia is well-protected by the thighs and clothing. Accidental incised wounds are extremely rare unless involving specific industrial machinery or "toilet seat" injuries in children, which are usually lacerations, not clean incised wounds. * **Suicides:** While self-mutilation can occur in individuals with severe psychosis or gender dysphoria, it is statistically rare compared to homicidal cases. Suicidal incised wounds are typically found on "sites of election" like the wrists or throat. * **Postmortem artifact:** While animals (like rodents) may attack soft tissues postmortem, these produce ragged edges and loss of tissue rather than clean-cut incised wounds. **High-Yield Clinical Pearls for NEET-PG:** * **Emasculation:** The total removal of male external genitalia. If done by the victim themselves, it is often associated with Koro syndrome or schizophrenia. * **Fabricated Wounds:** These are superficial, multiple, and parallel, but are rarely found on the genitalia; they are common on reachable areas like the forehead or arms. * **Defense Wounds:** Always look for these on the palms and ulnar borders of the forearms in cases of homicidal incised wounds to confirm a struggle.

Q: What percentage of carboxyhemoglobin (COHb) can cause death?

82%. **Explanation:** Carbon monoxide (CO) has an affinity for hemoglobin that is 200–300 times greater than oxygen, forming **Carboxyhemoglobin (COHb)**. This shifts the oxygen-dissociation curve to the left, leading to cellular hypoxia. 1. **Why 82% is Correct:** In forensic toxicology and pathology (Reddy’s *The Essentials of Forensic Medicine and Toxicology*), it is established that while symptoms begin at lower levels, a COHb concentration of **80% or more** is generally considered fatal. Specifically, **82%** is cited in standard textbooks as the threshold where death is inevitable due to total respiratory failure and systemic anoxia. 2. **Analysis of Incorrect Options:** * **70% & 75%:** At these levels (60–75%), a person will experience severe confusion, seizures, and coma. While potentially fatal if exposure continues, they are often considered the "critical" range rather than the definitive lethal threshold used in forensic examinations. * **80%:** While 80% is the general benchmark for fatality, in a multiple-choice format where 82% is provided, 82% is the more precise "textbook" value indicating the upper limit of saturation found in post-mortem cases. **High-Yield Clinical Pearls for NEET-PG:** * **Cherry Red Discoloration:** The most characteristic post-mortem finding of CO poisoning (seen in skin, mucous membranes, and blood). * **CT/MRI Finding:** Bilateral necrosis of the **Globus Pallidus** is a classic sign of CO poisoning. * **Treatment:** 100% Oxygen (reduces half-life of COHb from 5 hours to 80 minutes) or Hyperbaric Oxygen. * **Rule of Thumb:** 30% COHb = Severe headache/dizziness; 50% = Confusion/Syncope; >80% = Death.

Question 1

What does the term 'Falanga' refer to?

Accepted Answer

Hitting the feet with a stick

Answer

Pulling of hair

Answer

Application of electric current

Answer

Sitting in an abnormal position

Question 2

Suicidal cut wounds are characterised by which of the following?

Accepted Answer

All of the above

Answer

The direction of the wound

Answer

Location over accessible parts of the body

Answer

Use of small weapons

Question 3

Hesitation cuts are typically seen in which type of wounds?

Accepted Answer

Self-inflicted wounds

Answer

Homicidal wounds

Answer

Defense wounds

Answer

Accidental wounds

Question 4

Presence of soot in air passages indicates what?

Accepted Answer

Ante-mortem burns

Answer

Post-mortem burns

Answer

Ante-mortem hanging

Answer

Post-mortem hanging

Question 5

Which among the following sites is involved in an "underminer's fracture"?

Accepted Answer

Cervical spine

Answer

Skull

Answer

Pelvis

Answer

Mandible

Question 6

Damage produced by a bullet is in direct proportion to its:

Accepted Answer

Weight

Answer

Size

Answer

Shape

Answer

Velocity

Question 7

A lathi can cause all of the following injuries, except:

Accepted Answer

Incised wound

Answer

Fissured fracture

Answer

Contusion

Answer

Incised looking lacerated wound

Question 8

A 'patterned' abrasion is a variety of which type of abrasion?

Accepted Answer

Pressure abrasion

Answer

Linear abrasion

Answer

Sliding abrasion

Answer

Superficial bruise

Question 9

An incised wound on the genitalia is commonly associated with which of the following?

Accepted Answer

Homicides

Answer

Accidents

Answer

Suicides

Answer

Postmortem artifact

Question 10

What percentage of carboxyhemoglobin (COHb) can cause death?

Accepted Answer

82%

Answer

70%

Answer

75%

Answer

80%

Injuries and Their Significance — MCQs

Injuries and Their Significance — MCQs

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