Soft Tissue Injuries Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for Soft Tissue Injuries. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Soft Tissue Injuries Indian Medical PG Question 1: Most common site of myositis ossificans ?
- A. Shoulder
- B. Wrist
- C. Quadriceps/Thigh (Correct Answer)
- D. Elbow
Soft Tissue Injuries Explanation: ***Quadriceps/Thigh***
- The **quadriceps and thigh** muscles are frequently affected due to their common involvement in sports injuries and trauma.
- This region is prone to **hematoma formation** after contusions, which can predispose to ectopic bone formation.
*Shoulder*
- While the shoulder can be affected by myositis ossificans, it is **less common** than the quadriceps.
- Traumatic myositis ossificans in the shoulder typically involves the **deltoid muscle**.
*Wrist*
- Myositis ossificans of the **wrist is rare** and usually occurs after severe trauma or crush injuries.
- The small muscle mass and limited direct trauma to the wrist muscles make it an **unlikely primary site**.
*Elbow*
- Myositis ossificans can occur around the elbow, particularly in the **brachialis muscle**, often following dislocations or fractures.
- However, the elbow is still **less commonly affected overall** compared to the large muscle groups of the thigh.
Soft Tissue Injuries Indian Medical PG Question 2: Which of the following is/are characteristic features of chronic inflammation?
- A. Infiltration of neutrophils
- B. Tissue fibrosis and lymphocyte infiltration (Correct Answer)
- C. Increased blood flow (hyperemia)
- D. Presence of fluid accumulation (edema) in tissues
Soft Tissue Injuries Explanation: ***Tissue fibrosis and lymphocyte infiltration***
- **Chronic inflammation** is characterized by the persistent presence of lymphocytes, plasma cells, and macrophages as the predominant inflammatory cells [1].
- **Tissue fibrosis** (scarring) and destruction are hallmarks of chronic inflammation as the body attempts to repair ongoing damage, often leading to loss of organ function [1].
*Infiltration of neutrophils*
- **Neutrophils** are the primary inflammatory cells seen in **acute inflammation**, being the first responders to injury or infection [2].
- Their presence typically signifies an active, recent inflammatory process, usually resolving within hours to days.
*Increased blood flow (hyperemia)*
- **Hyperemia** is a classic sign of **acute inflammation**, contributing to the **redness and warmth** observed at the site.
- While some vascular changes can persist in chronic inflammation, pronounced and primary hyperemia is characteristic of the acute phase.
*Presence of fluid accumulation (edema) in tissues*
- **Edema** primarily results from increased vascular permeability, a key feature of **acute inflammation**, causing swelling [2].
- While some edema may be present in chronic inflammation due to persistent vascular leakage, it is a dominant feature of acute inflammatory responses.
**References:**
[1] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Inflammation and Repair, pp. 109-110.
[2] Kumar V, Abbas AK, et al.. Robbins and Cotran Pathologic Basis of Disease. 9th ed. Inflammation and Repair, pp. 103-104.
Soft Tissue Injuries Indian Medical PG Question 3: Histology of Myositis ossificans most closely mimics which of the following?
- A. Giant Cell Tumor
- B. Ewing's tumor
- C. Osteochondroma
- D. Osteosarcoma (Correct Answer)
Soft Tissue Injuries Explanation: ***Osteosarcoma***
- Histologically, myositis ossificans can mimic **osteosarcoma**, as both conditions show features of **ossification and bone formation** [1].
- **Age** and **location** may also help differentiate, but careful histological examination reveals similarities.
*Osteochondroma*
- Characterized by a **cartilaginous cap** overlying the bone, which is not present in myositis ossificans [2].
- Usually develops in patients with a **pedunculated or sessile base**, rather than the heterogeneous ossification seen in myositis ossificans.
*Ewing's tumour*
- This is a **malignant round cell tumor** that predominantly affects children and young adults, with specific **translocation** genetic features.
- Histologically, it shows a **small, blue cell appearance**, distinct from the fibroblastic reaction and bone formation seen in myositis ossificans.
*GCT*
- Granulosa cell tumors (GCT) are primarily **gynecological**, with no significant **bony changes** as seen in myositis ossificans.
- Histologically, GCTs show **multinucleated giant cells** and are associated with **subarticular bone lesions**, unlike the heterotopic ossification seen in myositis ossificans.
**References:**
[1] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Osteoarticular And Connective Tissue Disease, pp. 673-674.
[2] Cross SS. Underwood's Pathology: A Clinical Approach. 6th ed. Common Clinical Problems From Osteoarticular And Connective Tissue Disease, pp. 672-673.
Soft Tissue Injuries Indian Medical PG Question 4: Ulnar nerve injury results in:
- A. Pointing index
- B. Ape thumb deformity
- C. Clawing of fingers (Correct Answer)
- D. Wrist drop
Soft Tissue Injuries Explanation: ***Clawing of fingers***
- An ulnar nerve injury, particularly at the elbow, often leads to **paralysis of the interossei muscles** and the **medial two lumbricals**. [1]
- This results in **hyperextension at the metacarpophalangeal joints** and **flexion at the interphalangeal joints** of the 4th and 5th fingers (and sometimes 3rd), creating the characteristic claw hand deformity. [1]
*Pointing index*
- **Pointing index**, also known as the **sign of benediction** or **preacher's hand**, occurs with **high median nerve lesions** affecting the lateral lumbricals and flexor digitorum superficialis.
- The patient is unable to flex the index and middle fingers, especially when attempting to make a fist.
*Ape thumb deformity*
- **Ape thumb deformity** is caused by a **median nerve injury**, specifically affecting the **thenar muscles** (abductor pollicis brevis, opponens pollicis, and superficial head of flexor pollicis brevis).
- This paralysis leads to the thumb being pulled laterally and into the same plane as the other fingers, losing its ability to oppose.
*Wrist drop*
- **Wrist drop** is a classic sign of **radial nerve injury**, which paralyzes the **extensor muscles of the wrist and fingers**.
- This prevents the patient from extending their wrist and metacarpophalangeal joints.
Soft Tissue Injuries Indian Medical PG Question 5: A football player experienced a twist in the ankle and knee. Clinically, no bone injury was appreciated. The examiner is performing the test shown in the image. Which test is this?
- A. Posterior drawer for PCL
- B. McMurray
- C. Lachman (Correct Answer)
- D. Anterior drawer for ACL
Soft Tissue Injuries Explanation: ***Lachman***
- The image shows the examiner holding the distal thigh and proximal tibia, with the knee flexed at a **20-30 degree angle**, applying an **anterior translational force** to the tibia. This specific maneuver is characteristic of the Lachman test.
- The Lachman test is highly sensitive for detecting **anterior cruciate ligament (ACL) tears**, particularly in acute injuries, due to the reduced hamstring spasm compared to the anterior drawer test.
*Posterior drawer for PCL*
- The posterior drawer test involves flexing the knee to **90 degrees** and applying a **posterior force** to the tibia to assess the integrity of the **posterior cruciate ligament (PCL)**.
- The position of the knee in the image (flexed at a shallower angle) and the direction of the applied force (anteriorly towards the femur) do not match the technique for a posterior drawer test.
*McMurray*
- The McMurray test is performed to evaluate **meniscal tears** by flexing, extending, and rotating the knee while applying a varus or valgus stress.
- The maneuver in the image, involving direct anterior translation of the tibia with the knee in slight flexion, is not consistent with the McMurray test.
*Anterior drawer for ACL*
- While also testing the **ACL**, the anterior drawer test typically involves flexing the knee to **90 degrees** and sitting on the foot, then pulling the tibia anteriorly.
- The knee flexion angle in the image is much shallower than 90 degrees, making it inconsistent with the standard anterior drawer test.
Soft Tissue Injuries Indian Medical PG Question 6: A 45-year-old woman presents with severe shoulder pain after a fall, and examination reveals a dislocated shoulder. What is the initial management?
- A. Sling and swathe immobilization
- B. Open reduction
- C. Closed reduction (Correct Answer)
- D. MRI of the shoulder
Soft Tissue Injuries Explanation: ***Closed reduction***
- **Closed reduction** is the initial and preferred treatment for an anterior shoulder dislocation, aiming to restore the humeral head to the glenoid cavity **without surgical incision**.
- This procedure should be performed promptly to minimize pain, muscle spasm, and the risk of **neurovascular compromise** in the affected limb.
*Sling and swathe immobilization*
- While immobilization is required *after* a successful reduction, it is not the *initial* management for a dislocated shoulder itself.
- Immobilization *without* prior reduction would leave the shoulder dislocated, leading to ongoing pain and potential long-term complications.
*Open reduction*
- **Open reduction**, which involves surgical incision, is generally reserved for cases where **closed reduction fails** or if there are associated complex injuries, such as significant fractures not amenable to closed management.
- It is not the initial treatment strategy for an uncomplicated shoulder dislocation.
*MRI of the shoulder*
- An **MRI** may be indicated to evaluate associated soft tissue injuries (e.g., **rotator cuff tears**, **labral tears**) *after* the shoulder has been reduced and initial radiographs have been obtained.
- It is not part of the immediate management for pain relief and joint repositioning in an acute dislocation.
Soft Tissue Injuries Indian Medical PG Question 7: What is the Essex-Lopresti lesion in the upper limb?
- A. Isolated radial head fracture without soft tissue involvement
- B. Radial shaft
- C. Comminuted radial head fracture with interosseous membrane disruption and DRUJ instability (Correct Answer)
- D. Radial shaft and radio-ulnar joint fracture
Soft Tissue Injuries Explanation: ***Comminuted radial head fracture with interosseous membrane disruption and DRUJ instability***
- The Essex-Lopresti lesion is a severe injury characterized by a **comminuted radial head fracture**, **disruption of the interosseous membrane** (IOM), and eventual **distal radioulnar joint (DRUJ) instability**.
- This complex injury can lead to significant **forearm instability**, pain, and loss of function due to the disruption of the forearm's longitudinal stability.
*Isolated radial head fracture without soft tissue involvement*
- This describes a less severe injury, typically classified as a **Mason type I or II radial head fracture**, where the soft tissue structures like the interosseous membrane and DRUJ are intact.
- An isolated radial head fracture lacks the characteristic **longitudinal instability** of the Essex-Lopresti lesion, which is critical for its diagnosis.
*Radial shaft*
- A radial shaft fracture involves the **diaphysis of the radius** and is a different type of injury that does not inherently include a radial head fracture or interosseous membrane disruption as seen in Essex-Lopresti.
- While a radial shaft fracture can occur, it's typically a **more localized injury** to the shaft itself and does not define the systemic instability of an Essex-Lopresti lesion.
*Radial shaft and radio-ulnar joint fracture*
- This description is vague and does not specifically capture the key components of an Essex-Lopresti injury which include the **radial head fracture**, **interosseous membrane disruption**, and resultant **DRUJ instability**.
- A fracture of the radio-ulnar joint could refer to several different types of injuries but without mentioning the comminuted radial head fracture and interosseous membrane disruption, it misses the precise definition of an Essex-Lopresti lesion.
Soft Tissue Injuries Indian Medical PG Question 8: In which of the following conditions is the Kocher-Langenbeck approach for emergency acetabular fixation contraindicated?
- A. Morel - Lavallee lesion (Correct Answer)
- B. Progressive sciatic nerve injury
- C. Open fracture
- D. Recurrent dislocation despite closed reduction and traction
Soft Tissue Injuries Explanation: ***Morel - Lavallee lesion***
- A Morel-Lavallee lesion is a **closed degloving injury** where the skin and subcutaneous tissue are avulsed from the underlying fascia, creating a potential space that fills with hematoma, fat, and lymphatic fluid.
- The **Kocher-Langenbeck approach** involves significant soft tissue dissection, which increases the risk of **wound complications**, infection, and flap necrosis in an already compromised and devascularized soft tissue envelope found in a Morel-Lavallee lesion.
*Open fracture*
- An **open fracture** involves a break in the skin, exposing the fracture site, which significantly increases the risk of infection.
- While it presents a challenge, an open fracture is generally a **stronger indication for urgent surgical stabilization** to prevent further contamination and promote healing, rather than a contraindication to a specific surgical approach if it's the most appropriate for the fracture pattern.
*Progressive sciatic nerve injury*
- **Progressive neurologic deficits**, including sciatic nerve injury, often necessitate urgent surgical intervention to decompress the nerve and prevent irreversible damage.
- This symptom emphasizes the **urgency of surgical stabilization** and internal fixation for the acetabular fracture, making it an indication for rather than a contraindication to the Kocher-Langenbeck approach if it provides optimal access.
*Recurrent dislocation despite closed reduction and traction*
- **Instability** of the hip joint despite conservative measures indicates a need for surgical intervention to achieve stable reduction and fixation of the acetabular fracture.
- This situation generally **supports the need for open reduction and internal fixation**, often via approaches like Kocher-Langenbeck, to restore joint congruity and stability, making it an indication, not a contraindication.
Soft Tissue Injuries Indian Medical PG Question 9: Most sensitive investigation for abdominal trauma in a hemodynamically stable patient is-
- A. Ultrasonography (FAST)
- B. Diagnostic peritoneal lavage (DPL)
- C. MRI (Magnetic Resonance Imaging)
- D. CT Scan (Computed Tomography) (Correct Answer)
Soft Tissue Injuries Explanation: ***CT Scan (Computed Tomography)***
- **CT scans** offer superior anatomical detail and can accurately detect organ damage, hemorrhage, and other injuries in **hemodynamically stable** patients with abdominal trauma.
- It is considered the **most sensitive** and specific imaging modality for evaluating blunt and penetrating abdominal trauma when the patient can tolerate the study.
*Ultrasonography (FAST)*
- While effective for detecting **free fluid** (blood) in specific abdominal areas, **Focused Assessment with Sonography for Trauma (FAST)** has lower sensitivity for solid organ injuries or bowel perforations.
- Its primary role is rapid assessment for **hemoperitoneum** to guide immediate management in unstable patients, not detailed injury characterization.
*Diagnostic peritoneal lavage (DPL)*
- **DPL** is an invasive procedure with high sensitivity for detecting **intraperitoneal bleeding**, but it does not identify specific organ injuries or retroperitoneal hemorrhage.
- It is rarely used in hemodynamically stable patients due to its invasiveness and the availability of more detailed imaging techniques.
*MRI (Magnetic Resonance Imaging)*
- **MRI** provides excellent soft tissue contrast but is typically too **time-consuming** and less accessible in urgent trauma settings compared to CT.
- It's generally not the first-line investigation for acute abdominal trauma due to motion artifacts and limited utility in detecting air or bone injuries.
Soft Tissue Injuries Indian Medical PG Question 10: A moving vehicle hits a pedestrian on his lateral aspect of the knee and causes a fracture. The fracture line is passing through the intercondylar eminence. Which of the following structures will most likely be injured
- A. Medial collateral ligament
- B. Medial meniscus
- C. Anterior cruciate ligament (Correct Answer)
- D. Lateral collateral ligament
Soft Tissue Injuries Explanation: ***Anterior cruciate ligament***
- A fracture of the **intercondylar eminence** typically involves the avulsion of the **tibial attachment** of the anterior cruciate ligament (ACL).
- The ACL's fibers attach to the **tibial intercondylar area**, making it highly susceptible to injury with a fracture in this region.
*Medial collateral ligament*
- The **medial collateral ligament** (MCL) originates from the medial femoral epicondyle and attaches to the medial tibia, primarily resisting valgus forces.
- While knee trauma can affect the MCL, a fracture of the intercondylar eminence specifically points to an injury involving a structure attached to that area.
*Medial meniscus*
- The **medial meniscus** is a C-shaped cartilage in the knee joint and can be injured by rotational forces or compression.
- Its injury is not directly linked to an intercondylar eminence fracture, although severe trauma can injure multiple structures.
*Lateral collateral ligament*
- The **lateral collateral ligament** (LCL) originates from the lateral femoral epicondyle and attaches to the fibular head, resisting varus forces.
- An injury to the LCL is less likely with an intercondylar eminence fracture, as the LCL does not attach to this specific tibial region.
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