Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for Future Trends in Computer-Assisted Orthopaedics. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Question 1: What is the best imaging modality for detecting early osteomyelitis?
- A. CT scan
- B. X-ray
- C. MRI (Correct Answer)
- D. Bone scintigraphy
Future Trends in Computer-Assisted Orthopaedics Explanation: ***MRI***
- **Magnetic Resonance Imaging (MRI)** is considered the **gold standard** for detecting early osteomyelitis due to its excellent soft tissue contrast and ability to visualize **bone marrow edema**, which is an early sign of infection.
- It can identify changes within **3-5 days** of infection onset, much earlier than other modalities.
*CT scan*
- While useful for showing **bone destruction**, cortical integrity, and sequestra, **CT scans** are less sensitive than MRI for detecting early marrow edema.
- Its ability to diagnose osteomyelitis is usually delayed until significant **bony changes** have occurred, typically around 1-2 weeks.
*X-ray*
- **Plain radiographs** are often the initial imaging study but are **insensitive** for early osteomyelitis, showing changes only after 10-14 days or more.
- Early findings on X-rays can be subtle, such as **periosteal elevation** or **soft tissue swelling**, but frank bone destruction is a late finding.
*Bone scintigraphy*
- **Bone scintigraphy** (e.g., technetium-99m) is sensitive for detecting increased bone turnover associated with infection but lacks **specificity**, as it can be positive in other conditions like trauma or tumors.
- While it can detect changes earlier than X-rays, typically within 2-3 days, it cannot clearly differentiate infection from other processes, and its spatial resolution is poor compared to MRI.
Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Question 2: What is the condition commonly known as jumper's knee?
- A. Inflammation of the patellar tendon at its insertion on the patella.
- B. Tendinopathy of the quadriceps tendon.
- C. Injury to the hamstring tendon.
- D. Patellar tendonitis due to overuse of the patellar tendon. (Correct Answer)
Future Trends in Computer-Assisted Orthopaedics Explanation: ***Patellar tendonitis due to overuse of the patellar tendon.***
- **Jumper's knee** is the common term for **patellar tendonitis**, which specifically refers to inflammation of the patellar tendon.
- This condition is frequently caused by **overuse**, especially in activities involving repetitive jumping and landing.
*Inflammation of the patellar tendon at its insertion on the patella.*
- While jumper's knee does involve inflammation of the patellar tendon, it is more commonly at its insertion on the **tibial tubercle** or specifically its origin at the **inferior pole of the patella**, not necessarily at the patella itself.
- This option is less precise as it describes only one aspect of the condition without mentioning the critical role of overuse.
*Tendinopathy of the quadriceps tendon.*
- **Tendinopathy of the quadriceps tendon** is a distinct condition affecting the tendon above the patella, known as **quadriceps tendinopathy**.
- It presents with pain proximal to the patella, differentiating it from jumper's knee, which involves the tendon distal to the patella.
*Injury to the hamstring tendon.*
- An **injury to the hamstring tendon** would cause pain and symptoms on the posterior aspect of the knee or thigh.
- This is completely unrelated to jumper's knee, which is characterized by anterior knee pain.
Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Question 3: Who is often referred to as the father of joint replacement surgery?
- A. Sir John Manning
- B. Sir John Charnley (Correct Answer)
- C. Dr. Ignacio Ponseti
- D. Sir John Girdlestone
Future Trends in Computer-Assisted Orthopaedics Explanation: ***Sir John Charnley***
- **Sir John Charnley** is widely recognized as the **father of modern hip replacement surgery** due to his pioneering work in developing low-friction arthroplasty in the 1960s.
- He introduced concepts such as **bone cement fixation**, **aseptic operating environments**, and the use of **ultra-high molecular weight polyethylene** as a bearing surface.
*Sir John Manning*
- While significant in medical history, **Sir John Manning** is not associated with the development of joint replacement surgery.
- His contributions do not primarily lie in orthopedic surgery innovations.
*Dr. Ignacio Ponseti*
- **Dr. Ignacio Ponseti** is renowned for developing the **Ponseti method** for the treatment of **clubfoot**, a non-surgical technique involving manipulation and casting.
- His work focuses on pediatric orthopedics and congenital deformities rather than joint replacement.
*Sir John Girdlestone*
- **Sir John Girdlestone** is known for the **Girdlestone arthroplasty**, a salvage procedure involving the **excision of the femoral head** to treat severe hip infections or failed hip replacements.
- This procedure aims to create a pseudoarthrosis rather than replacing the joint, distinguishing it from modern joint replacement.
Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Question 4: Gold standard investigation for breast carcinoma screening in a patient with silicone breast implants
- A. Mammography
- B. CT scan
- C. USG
- D. MRI (Correct Answer)
Future Trends in Computer-Assisted Orthopaedics Explanation: ***MRI***
- **MRI** is considered the **gold standard** for breast cancer screening in patients with silicone breast implants due to its superior ability to visualize breast tissue through the implant and detect subtle lesions.
- It offers **high sensitivity** in detecting both implant rupture and early malignancies, often providing better clarity than mammography in augmented breasts where implants can obscure tissue.
*Mammography*
- While a standard screening tool, **mammography** can be limited in patients with silicone implants because the implants can **obscure adjacent breast tissue**, making detection of small masses challenging.
- Special views (e.g., **Eklund views**) can be used, but sensitivity is still reduced compared to MRI in augmented breasts.
*CT scan*
- **CT scans** are not routinely used for primary breast cancer screening due to their use of **ionizing radiation** and lower sensitivity for detecting early breast lesions compared to MRI.
- CT is more commonly used for **staging** advanced cancers or evaluating complex masses detected by other modalities.
*USG*
- **Ultrasound (USG)** is a valuable complementary tool, especially for evaluating palpable lumps or clarifying findings from mammography, but it is **operator-dependent** and has a lower overall sensitivity for general screening compared to MRI.
- It is particularly useful for differentiating between **cystic and solid masses** and detecting implant ruptures but is not the gold standard for comprehensive screening in augmented breasts.
Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Question 5: In which of the following situations is breast conservation surgery not indicated?
- A. SLE
- B. Large pendular breast
- C. Diffuse microcalcification
- D. All of the options (Correct Answer)
Future Trends in Computer-Assisted Orthopaedics Explanation: ***All of the options***
- All listed scenarios—**large pendular breast**, **SLE**, and **diffuse microcalcification**—represent situations where breast conservation surgery is generally contraindicated or challenging.
- Their presence often necessitates alternative treatment approaches, such as mastectomy, to achieve optimal oncologic and cosmetic outcomes.
*Large pendular breast*
- While not an absolute contraindication, a **very large or pendulous breast** can make it difficult to achieve a satisfactory cosmetic outcome after breast conservation surgery.
- The disproportionate breast size post-lumpectomy may lead to significant **asymmetry**, requiring further reconstructive procedures.
*SLE*
- Patients with **Systemic Lupus Erythematosus (SLE)** are at an increased risk of complications from radiation therapy, a mandatory component of breast conservation surgery.
- They tend to experience more severe and prolonged **acute and chronic skin reactions** to radiation, which can significantly impair healing and quality of life.
*Diffuse microcalcification*
- **Diffuse microcalcification** within the breast can indicate widespread in situ carcinoma (e.g., DCIS) or an invasive carcinoma with extensive intraductal component.
- In such cases, achieving **clear surgical margins** with breast conservation surgery can be challenging and often leads to multiple re-excisions or an increased risk of local recurrence.
Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Question 6: All of the following are indications for open reduction and internal fixation (ORIF) of fractures EXCEPT:
- A. Multiple trauma
- B. Stable closed fracture (Correct Answer)
- C. Compound fracture
- D. Intra-articular fracture
Future Trends in Computer-Assisted Orthopaedics Explanation: ***Stable closed fracture***
- A **stable closed fracture** typically does not require surgical intervention with ORIF as it can usually be managed non-surgically with casting or bracing.
- The goal of ORIF is to achieve **anatomic reduction and rigid fixation**, which is not necessary for stable fractures that maintain alignment.
*Multiple trauma*
- In patients with **multiple trauma**, early stabilization of long bone fractures using ORIF can help reduce pain, prevent further injury, and facilitate patient mobilization.
- This approach aims to reduce the risk of complications such as **ARDS (acute respiratory distress syndrome)** and fat embolism for critically ill patients.
*Compound fracture*
- **Compound (open) fractures** involve a break in the skin, exposing the bone to the external environment, and are a classic indication for surgical management.
- ORIF in these cases helps to achieve **stabilization** after debridement, crucial for preventing infection and promoting bone healing.
*Intra-articular fracture*
- **Intra-articular fractures** involve the joint surface, and accurate anatomical reduction is critical to prevent post-traumatic arthritis and preserve joint function.
- ORIF provides the precise reduction and stable fixation needed to restore the **joint congruity**.
Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Question 7: Which technique is considered the best for evaluating bone regeneration after periodontal surgery?
- A. Intraoral Periapical radiography
- B. Orthopantomogram
- C. Digital subtraction radiography
- D. Cone Beam Computed Tomography (Correct Answer)
Future Trends in Computer-Assisted Orthopaedics Explanation: ***Cone Beam Computed Tomography***
- **CBCT** offers a three-dimensional view, which is superior for assessing **bone density, volume**, and the precise morphology of bone regeneration.
- It allows for detailed analysis of defects and regeneration without the superimposition of anatomical structures, which is a limitation of 2D radiographs.
*Intraoral Periapical radiography*
- **Periapical radiographs** provide only a two-dimensional image and are poor at differentiating between **bony infill** and soft tissue.
- They are limited by projection geometry and cannot accurately represent **bone volume** or complex defects.
*Orthopantomogram*
- An **OPG** provides a panoramic view but suffers from significant **magnification, distortion**, and superimposition of structures.
- It is not precise enough for the detailed assessment required to evaluate **bone regeneration** after periodontal surgery.
*Digital subtraction radiography*
- **Digital subtraction radiography** can detect subtle changes in bone mineral content by subtracting two images taken at different times.
- While useful for showing small changes, it is still a **2D technique** and does not provide information on **bone volume** or the three-dimensional architecture of the regenerated bone.
Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Question 8: Best investigation to detect rupture of silicone breast implants is-
- A. Mammography
- B. X-ray
- C. MRI (Correct Answer)
- D. USG
Future Trends in Computer-Assisted Orthopaedics Explanation: ***MRI***
- **Magnetic Resonance Imaging (MRI)** is considered the **gold standard** for detecting silicone breast implant ruptures due to its superior soft tissue contrast and ability to differentiate silicone from other tissues.
- It can accurately identify both **intracapsular** (linguine sign) and **extracapsular** ruptures, as well as associated silicone granulomas.
*Mammography*
- While useful for breast cancer screening, **mammography** has limited sensitivity for detecting silicone implant ruptures, especially subtle ones.
- It can show indirect signs like implant contour abnormalities or increased implant density but is often inconclusive for rupture diagnosis.
*X-ray*
- **X-rays** provide very little information regarding the integrity of silicone breast implants because silicone is radiolucent and does not show up clearly on standard radiographs.
- Its utility is primarily for detecting calcifications or foreign bodies, not implant rupture.
*USG*
- **Ultrasound (USG)** can be a useful initial screening tool for detecting implant ruptures, showing signs like the **"stepladder sign"** for intracapsular rupture or anechoic collections (silicone outside the capsule).
- However, its accuracy is highly operator-dependent, and it may miss subtle ruptures or be limited by poor visualization due to scar tissue, making MRI a more definitive choice.
Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Question 9: Vacuum assisted closure is contraindicated in which of the following conditions -
- A. Chronic osteomyelitis
- B. Large amount of necrotic tissue with eschar (Correct Answer)
- C. Abdominal wound
- D. Surgical wound dehiscence
Future Trends in Computer-Assisted Orthopaedics Explanation: ***Large amount of necrotic tissue with eschar***
- The presence of a large amount of **necrotic tissue** and **eschar** is a contraindication for VAC therapy because it prevents effective contact between the foam and viable tissue, impairing wound healing.
- Eschar acts as a physical barrier, trapping bacteria and hindering the proper function of negative pressure by preventing uniform pressure distribution and fluid removal from the wound bed.
*Chronic osteomyelitis*
- While chronic osteomyelitis can be challenging, VAC therapy can sometimes be used as an **adjunctive treatment** after surgical debridement to manage the wound and promote granulation tissue formation.
- It helps in controlling infection and closing the wound by removing exudates, reducing edema, and improving blood flow.
*Abdominal wound*
- VAC therapy is commonly used for **abdominal wounds**, especially after damage control surgery or in cases of open abdomen management.
- It facilitates closure by promoting granulation, reducing edema, and protecting the abdominal contents.
*Surgical wound dehiscence*
- **Surgical wound dehiscence** is a common indication for VAC therapy, as it helps to manage the open wound, promote granulation tissue, and prepare the wound for eventual secondary closure or grafting.
- VAC therapy reduces surgical site infections, removes exudates, and enhances tissue perfusion, leading to better wound healing outcomes.
Future Trends in Computer-Assisted Orthopaedics Indian Medical PG Question 10: What does the given image show?
- A. Doyen's periosteal elevator (Correct Answer)
- B. Cobb's spinal elevator
- C. Leksell's rongeur
- D. Key periosteal elevator
Future Trends in Computer-Assisted Orthopaedics Explanation: ***Doyen's periosteal elevator***
- This instrument is characterized by its **curved, spoon-like working end** and solid handle, designed for **elevating the periosteum** from bone.
- Doyen's elevator comes in various sizes and angles, but the distinct hook-like curve is a key identifying feature, distinguishing it from other elevators.
*Cobb's spinal elevator*
- Cobb's elevator typically has a **flat, broad, and slightly curved blade** with a rounded or tapered tip, suitable for dissecting along bony surfaces, particularly in spinal surgery.
- Its design prioritizes broad, even separation of tissue layers, contrasting with the more acute curve of the Doyen's.
*Leksell's rongeur*
- A rongeur is a biting instrument used for **gnawing away bone or tough tissue**, characterized by hinged jaws with sharp, cup-shaped ends.
- The image clearly shows a single-piece instrument without hinged jaws, ruling out a rongeur.
*Key periosteal elevator*
- The Key elevator typically features a **broader, more rounded or slightly angled tip** and a flat, somewhat spatula-like working end, used for general periosteal elevation.
- While also a periosteal elevator, its working end does not exhibit the characteristic deep, hook-like curve seen in the Doyen's elevator.
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