Facial Plastic and Reconstructive Surgery — MCQs
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Ashley's flap is:
Which technique of facial fracture treatment involves purely closed reduction?
What is commonly referred to as a Tripod fracture?
Facial Plastic and Reconstructive Surgery Indian Medical PG Practice Questions and MCQs
Question 11: Ashley's flap is:
- A. Palatal rotation flap. (Correct Answer)
- B. Buccal pedicle flap.
- C. Buccal free flap.
- D. Palatal free flap.
Explanation: **Explanation:** **Ashley’s flap** is a specialized **palatal rotation flap** used primarily in the surgical management of **choanal atresia**. 1. **Why the correct answer is right:** The flap is designed by elevating the mucoperiosteum of the hard palate. It is rotated posteriorly to cover the raw area created after the excision of the atretic plate (the bony or membranous obstruction in the posterior nasal aperture). By providing epithelial coverage to the newly created opening, it prevents postoperative scarring and restenosis, which are common complications in choanal atresia repair. 2. **Why the incorrect options are wrong:** * **Buccal pedicle/free flaps:** These involve the inner cheek mucosa. While buccal flaps (like the Su-Tanz flap) are used for oral defects or cleft palate repairs, they are not the "Ashley flap" used for choanal atresia. * **Palatal free flap:** A free flap requires microvascular anastomosis. Ashley’s flap is a pedicled rotation flap, meaning it remains attached to its blood supply (the greater palatine artery) during transposition. **High-Yield Clinical Pearls for NEET-PG:** * **Choanal Atresia:** Most common congenital anomaly of the nose. 50% are associated with **CHARGE syndrome** (Coloboma, Heart defects, Atresia choanae, Retarded growth, Genitourinary anomalies, Ear anomalies). * **Diagnosis:** Failure to pass a 6F or 8F catheter through the nose into the nasopharynx. **CT scan** is the gold standard investigation. * **Surgical Approaches:** Transnasal (common in neonates) and Transpalatal (where Ashley’s flap is utilized). * **Other Palatal Flaps:** The **Island flap** (based on the greater palatine artery) is another high-yield term often confused with Ashley's; both utilize the palate's robust blood supply.
Question 12: Which technique of facial fracture treatment involves purely closed reduction?
- A. Application of miniplates
- B. Dynamic compression plating
- C. Maxillo-mandibular fixation (Correct Answer)
- D. Use of wire osteosynthesis across fracture site
Explanation: **Explanation:** The management of facial fractures is broadly categorized into **Closed Reduction** (non-surgical manipulation without direct visualization of the bone) and **Open Reduction with Internal Fixation (ORIF)** (surgical exposure of the fracture site). **Why Maxillo-mandibular fixation (MMF) is correct:** MMF (also known as intermaxillary fixation) involves stabilizing the fracture by wiring the upper and lower teeth together using arch bars or eyelet wires. This technique relies on the patient’s own occlusion to align the bone fragments. Because the fracture site is not surgically opened and no hardware is placed directly onto the bone, it is considered a **purely closed reduction** technique. **Why the other options are incorrect:** * **A & B (Miniplates and Dynamic Compression Plating):** These are forms of **Rigid Internal Fixation**. They require a surgical incision to expose the bone and the application of screws and plates directly across the fracture line. * **D (Wire Osteosynthesis):** While an older technique, it involves drilling holes into the bone ends and "sewing" them together with stainless steel wire. This requires surgical exposure (Open Reduction). **Clinical Pearls for NEET-PG:** * **Gold Standard:** ORIF with miniplates is currently the gold standard for most displaced facial fractures as it allows for early mobilization. * **MMF Duration:** When used as primary treatment, MMF is typically maintained for 4–6 weeks. * **Gunning Splints:** Used for MMF in **edentulous** (toothless) patients. * **Indications for Closed Reduction:** Minimally displaced fractures, fractures in children (to avoid damaging permanent tooth buds), or when the patient is medically unfit for surgery.
Question 13: What is commonly referred to as a Tripod fracture?
- A. Zygomatic fracture (Correct Answer)
- B. Maxillary fracture
- C. Mandibular fracture
- D. Temporal fracture
Explanation: A **Tripod fracture**, also known as a **Zygomaticomaxillary Complex (ZMC) fracture**, is one of the most common facial fractures encountered in clinical practice. It is called a "tripod" fracture because it involves the disruption of the three primary attachments of the zygoma to the rest of the facial skeleton. ### Why Zygomatic fracture is correct: The term refers to the separation of the zygomatic bone at its three major suture lines: 1. **Zygomaticofrontal suture** (superiorly) 2. **Zygomaticotemporal suture** (laterally at the zygomatic arch) 3. **Zygomaticomaxillary suture** (inferiorly, involving the infraorbital rim and the anterior/lateral walls of the maxillary sinus) *Note: Modern anatomy often refers to this as a "quadripod" fracture as it also involves the sphenozygomatic suture.* ### Why other options are incorrect: * **Maxillary fracture:** These are typically classified under the **Le Fort classification** (I, II, and III). While a ZMC fracture involves the maxilla, a pure maxillary fracture does not follow the tripod pattern. * **Mandibular fracture:** These are classified by anatomical location (symphysis, body, angle, ramus, condyle) and do not involve the zygomatic complex. * **Temporal fracture:** These involve the petrous or squamous portions of the temporal bone and are usually associated with base of skull trauma and hearing loss, not malar flattening. ### High-Yield Clinical Pearls for NEET-PG: * **Clinical Presentation:** Flattening of the cheek (malar prominence), infraorbital nerve anesthesia (numbness of the upper lip/cheek), and trismus (due to impingement on the coronoid process of the mandible). * **Radiology:** The **Water’s View** (occipitomental) is the best conventional X-ray to visualize ZMC fractures. Look for the "hanging drop" sign if the orbital floor is involved. * **Complication:** Diplopia may occur due to entrapment of the inferior rectus muscle or orbital fat.
Practice by Chapter
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Otoplasty
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