Plastic and Reconstructive Surgery Practice Questions

Q: Which of the following is NOT a feature of a meshed skin graft?

Better cosmetic appearance. **Explanation:** A **meshed skin graft** is a split-thickness skin graft (STSG) that has been passed through a mesher to create multiple small incisions (fenestrations). This allows the graft to be expanded to cover a larger surface area. **Why "Better cosmetic appearance" is the correct answer (NOT a feature):** Meshed grafts result in a characteristic **"fish-net" or "checkerboard" appearance** once healed. Because the gaps between the skin bridges heal by secondary intention (epithelialization), the texture and color match are inferior compared to sheet grafts. Therefore, they are generally avoided on aesthetically sensitive areas like the face or hands. **Analysis of Incorrect Options:** * **A. Fenestrations allow for egress of wound fluid:** This is a primary advantage. The holes prevent the accumulation of blood (hematoma) or serum (seroma) under the graft, which are the most common causes of graft failure. * **C. Good contour matching:** Because the mesh is flexible and "stretchy," it conforms better to irregular, concave, or convex wound beds compared to a stiff sheet graft. * **D. Large surface area can be covered:** Meshing allows expansion ratios (e.g., 1.5:1, 3:1, or even 6:1), making it ideal for massive burns where donor skin is limited. **High-Yield Clinical Pearls for NEET-PG:** * **Gold Standard for Burns:** Meshed STSG is the preferred method for extensive burn injuries. * **Graft Take:** The most critical factor for graft survival is **vascularization** (plasmatic imbibition → inosculation → capillary ingrowth). * **Sheet Grafts:** These provide the best cosmetic results and are used for the face, neck, and hands but carry a higher risk of seroma formation. * **Storage:** Skin grafts can be stored in saline-soaked gauze at **4°C** for up to 2 weeks.

Q: Which of the following is the ideal time for the repair of cleft palate?

9-12 months. **Explanation:** The primary goal of cleft palate repair (Palatoplasty) is to facilitate **normal speech development**. The timing is a delicate balance between allowing for maxillary growth and intervening before the child begins to develop complex speech patterns. **1. Why 9-12 months is correct:** Speech development typically begins around 12 months of age. Repairing the palate between **9 and 12 months** ensures a functional velopharyngeal mechanism is in place before the child starts articulating sounds. This prevents compensatory speech habits (like glottal stops) that are difficult to correct later. Modern surgical techniques and anesthesia safety have shifted the standard toward this earlier window. **2. Why the other options are incorrect:** * **18-24 months (Option D):** While previously common, this is now considered late. Delaying surgery beyond 18 months significantly increases the risk of permanent speech defects and hypernasality. * **2-3 years & 5-6 years (Options B & C):** These are far too late for primary repair. At these ages, the child has already established speech patterns, and surgery would likely require extensive secondary speech therapy. However, 5-6 years is often the age for secondary procedures like alveolar bone grafting. **High-Yield Clinical Pearls for NEET-PG:** * **Rule of 10s:** Used for **Cleft Lip** repair (10 weeks old, 10 lbs weight, 10 g/dL Hemoglobin). * **Cleft Lip Repair Timing:** Usually 3–6 months. * **Cleft Palate Repair Timing:** Usually 9–12 months (latest by 18 months). * **Most Common Type:** Isolated cleft palate is more common in females; cleft lip (with or without palate) is more common in males. * **Feeding:** Use specialized bottles (e.g., Haberman feeder); breastfeeding is often difficult due to the inability to create negative pressure.

Q: Which of the following congenital anomalies is more common in occurrence: isolated cleft palate, isolated cleft lip, or cleft lip and palate?

Cleft lip and palate. **Explanation:** The distribution of orofacial clefts follows a specific epidemiological pattern. **Cleft lip with or without cleft palate (CL±P)** is etiologically distinct from **isolated cleft palate (CP)**. Among these, the combination of **Cleft Lip and Palate (CLP)** is the most frequent presentation. **Why Option C is Correct:** Statistically, approximately **45-50%** of cases present as combined Cleft Lip and Palate. Isolated Cleft Palate accounts for about **30%**, and isolated Cleft Lip is the least common at approximately **20-25%**. This occurs because the embryological fusion of the primary palate (lip and premaxilla) and the secondary palate (hard and soft palate) are closely timed; a significant insult during primary palate formation often persists to affect the secondary palate. **Why Other Options are Incorrect:** * **Option A (Cleft Palate only):** While common, it occurs in roughly 1 in 1,500–2,000 births. It is more frequently associated with syndromic presentations (e.g., Pierre Robin Sequence) compared to CLP. * **Option B (Cleft Lip only):** This is the rarest of the three main types. It results from the failure of the maxillary process to fuse with the medial nasal process. * **Option D:** The occurrences are not equal; there is a clear hierarchy in frequency (CLP > CP > CL). **High-Yield Clinical Pearls for NEET-PG:** * **Gender Predilection:** Cleft Lip (+/- Palate) is more common in **males**, whereas isolated Cleft Palate is more common in **females**. * **Laterality:** Isolated cleft lip is most commonly **unilateral** and occurs more frequently on the **left side**. * **Rule of 10s (for Cheiloplasty):** 10 weeks of age, 10 lbs weight, and 10 g/dL Hemoglobin. * **Surgical Timing:** Cleft lip repair (Cheiloplasty) is usually done at **3 months**; Cleft palate repair (Palatoplasty) is done at **6–12 months** (before significant speech development).

Q: Potts puffy tumor occurs as a complication of which sinusitis?

Frontal. **Explanation:** **Pott’s Puffy Tumor** is a rare but serious clinical entity characterized by **subperiosteal abscess** of the frontal bone associated with **osteomyelitis**. **Why Frontal Sinus is the Correct Answer:** The condition occurs as a direct complication of **acute or chronic frontal sinusitis**. The infection spreads from the frontal sinus to the frontal bone through two primary mechanisms: 1. **Venous Spread:** Through the thrombophlebitis of the diploic veins (Breschet’s veins) that drain the sinus mucosa. 2. **Direct Extension:** Through the thin posterior or anterior table of the frontal sinus. This leads to a localized, fluctuant, "puffy" swelling on the forehead, which is the hallmark of the disease. **Why Other Options are Incorrect:** * **Sphenoid Sinus:** Infections here typically lead to cavernous sinus thrombosis or orbital apex syndrome due to its deep anatomical location, rather than a forehead swelling. * **Ethmoid Sinus:** Complications usually involve the orbit (e.g., orbital cellulitis or subperiosteal abscess of the lamina papyracea) rather than the frontal bone. **High-Yield Clinical Pearls for NEET-PG:** * **Eponym:** Named after Sir Percivall Pott (1760). * **Clinical Presentation:** Forehead swelling, headache, fever, and rhinorrhea. * **Imaging of Choice:** **Contrast-enhanced CT** (to see bone destruction) and **MRI** (to rule out intracranial complications like epidural abscess or meningitis). * **Management:** Requires emergency IV antibiotics and surgical drainage (often via Frontal Sinotomy or FESS). * **Most Common Organism:** *Streptococcus* species, *Staphylococcus*, and anaerobes.

Q: In cleft lip operations, when are all the stitches typically removed?

4th day. **Explanation:** The primary goal of suture removal in facial plastic surgery, particularly in pediatric cases like cleft lip repair, is to balance **wound tensile strength** against the risk of **permanent suture marks** (railroad scarring). **1. Why the 4th day is correct:** The facial skin has an excellent blood supply, which promotes rapid healing. In cleft lip surgery (e.g., Millard’s rotation-advancement flap), skin sutures are typically removed between the **3rd and 5th postoperative days** (average 4th day). Removing them early prevents the epithelialization of the suture tracts, which causes permanent scarring. By day 4, the wound has sufficient initial fibrin glue and early collagen deposition to remain apposed, provided the deeper muscle layers (Orbicularis oris) were repaired securely. **2. Analysis of Incorrect Options:** * **2nd day (Option A):** This is too early. The wound has not gained enough tensile strength to withstand the tension of facial expressions or crying, leading to a high risk of wound dehiscence. * **10th and 14th days (Options C & D):** These are standard timings for sutures on the trunk or limbs where healing is slower. On the face, leaving sutures for more than 7 days leads to "cross-hatching" or "railroad track" scars, which are aesthetically unacceptable in reconstructive surgery. **High-Yield Clinical Pearls for NEET-PG:** * **Rule of 10s:** Criteria for cleft lip surgery: 10 weeks of age, 10 lbs weight, and 10 g/dL Hemoglobin. * **Muscle Repair:** The most critical step in cleft lip repair is the reconstruction of the **Orbicularis oris** muscle to restore function and philtrum shape. * **Suture Material:** Usually, 6-0 or 7-0 non-absorbable monofilament (like Prolene) is used for the skin and removed early, or fast-absorbing gut is used to avoid the trauma of suture removal in infants.

Q: A full thickness graft can be obtained from all of the following sites, EXCEPT:

Knee. **Explanation:** The core principle of selecting a donor site for a **Full Thickness Skin Graft (FTSG)** is to choose areas with thin, mobile skin and minimal subcutaneous fat, which allows for better "take" (revascularization) and primary closure of the donor site. **Why "Knee" is the correct answer:** The skin over the knee is thick, subjected to constant mechanical stress, and lacks the necessary laxity for primary closure after harvesting a full-thickness piece. Furthermore, the knee is a common site for **Split Thickness Skin Grafts (STSG)**, where only the epidermis and a portion of the dermis are harvested using a dermatome. FTSGs are rarely, if ever, taken from weight-bearing or high-friction joint surfaces like the knee. **Analysis of incorrect options:** * **Eyelids:** This is the thinnest skin in the body. It is an ideal donor site for FTSG when repairing defects in the contralateral eyelid or delicate facial areas. * **Postauricular skin:** This is the **most common** donor site for FTSGs used in facial reconstruction because the color match is excellent, the skin is thin, and the scar is hidden in the sulcus. * **Supraclavicular skin:** This site provides a large surface area of thin skin with a good color match for head and neck defects. **High-Yield Clinical Pearls for NEET-PG:** * **FTSG (Wolfe’s Graft):** Includes epidermis and the *entire* dermis. It undergoes less secondary contraction than STSG, making it superior for cosmetic areas. * **Primary Closure:** Unlike STSG donor sites (which heal by epithelialization), FTSG donor sites **must** be closed primarily with sutures. * **Common Donor Sites:** Postauricular (best for face), Supraclavicular, Inguinal crease (for large grafts), and Prepuce. * **Take of Graft:** FTSGs are more demanding; they require a well-vascularized bed and are more prone to failure than STSGs.

Q: A Z-plasty is performed in which of the following conditions?

High frenal attachment. **Explanation:** **Z-plasty** is a versatile plastic surgery technique involving the transposition of two triangular flaps. Its primary functions are to **increase the length of a scar/tissue** in a specific direction and to change the direction of a scar to align with relaxed skin tension lines. **1. Why "High Frenal Attachment" is correct:** A high labial frenum attachment (where the frenum is attached near the crest of the alveolar ridge or interdental papilla) can cause a diastema, gingival recession, or interfere with denture stability. A **Frenectomy** or **Frenoplasty** is required to reposition it. Z-plasty is the preferred technique for frenoplasty because it effectively **increases the vertical length** of the frenum, thereby "lowering" the attachment point and relieving the tension that was pulling on the gingival margin. **2. Why the other options are incorrect:** * **Shallow/Deep Sulcus:** These conditions relate to the depth of the vestibule. Management usually involves **Vestibuloplasty** (e.g., Clark’s or Kazanjian’s technique) to increase the depth for denture retention, rather than a Z-plasty which is designed for linear lengthening and tension release. * **Low Frenal Attachment:** This is considered a normal anatomical position where the frenum is attached well away from the gingival margin. It does not require surgical intervention. **Clinical Pearls for NEET-PG:** * **The "60-degree" Rule:** The standard Z-plasty uses 60° angles, which results in a theoretical **75% increase in length**. * **Gain in Length:** Larger angles provide more length (e.g., 90° gives 120% gain), but the flaps become harder to transpose. * **Other Indications:** Z-plasty is high-yield for treating **linear burn contractures**, releasing webbed necks (Turner syndrome), and correcting "trap-door" deformities.

Q: Which of the following is a method used for cleft lip repair?

Wardill's method. **Explanation:** The question asks for a method used for **cleft lip repair**. However, there is a critical distinction in surgical techniques between cleft lip and cleft palate. **Correct Answer Analysis:** * **Wardill’s method (Wardill-Kilner-Veau technique):** This is primarily a **V-Y pushback procedure** used for **Cleft Palate repair**, not cleft lip. In the context of standard surgical classification, if the question intends to identify a "cleft" surgery, Wardill's is a classic eponymous procedure for the palate. *(Note: In many competitive exams, if the options mix lip and palate repairs, it is crucial to distinguish the two. If the question specifically asks for lip repair and lists Wardill as the answer, it may be a technical error in the question source, as Wardill is the gold standard for palate).* **Analysis of Other Options (Cleft Lip Repairs):** * **A. Le Mesurier’s method:** A historical technique for cleft lip repair using a **rectangular flap** to provide length to the lip. * **B. Tennison’s method:** A **triangular flap** technique (Z-plasty principle) used for unilateral cleft lip repair. It is excellent for preserving the Cupid’s bow but can result in a scar that crosses the philtrum. * **C. Millard’s method:** The **Rotation-Advancement flap**. This is currently the **most commonly used** technique for unilateral cleft lip repair worldwide. It preserves the philtral dimple and places the scar along the natural philtral column. **High-Yield Clinical Pearls for NEET-PG:** * **Rule of 10s (for Cleft Lip surgery):** Surgery is usually performed at 10 weeks of age, 10 lbs weight, and 10 g/dL Hemoglobin. * **Cleft Palate Surgery:** Ideally performed between **6 to 12 months** (before the child starts speaking) to prevent speech defects. * **Common Palate Repairs:** Wardill-Kilner (V-Y pushback), von Langenbeck (bipedicled mucoperiosteal flaps), and Furlow’s (double-opposing Z-plasty).

Question 1

Which of the following is NOT a feature of a meshed skin graft?

Accepted Answer

Better cosmetic appearance

Answer

Fenestrations allow for egress of wound fluid

Answer

Good contour matching of the wound bed by the graft

Answer

Large surface area can be covered

Question 2

Which of the following is the ideal time for the repair of cleft palate?

Accepted Answer

9-12 months

Answer

2-3 years

Answer

5-6 years

Answer

18-24 months

Question 3

Which of the following congenital anomalies is more common in occurrence: isolated cleft palate, isolated cleft lip, or cleft lip and palate?

Accepted Answer

Cleft lip and palate

Answer

Cleft palate only

Answer

Cleft lip only

Answer

All of the above have equal occurrence

Question 4

Potts puffy tumor occurs as a complication of which sinusitis?

Accepted Answer

Frontal

Answer

Sphenoid

Answer

Ethmoid

Answer

None of the above

Question 5

What is the most common skeletal finding in cephalometric radiographs in a patient with a history of cleft palate and anterior crossbite?

Accepted Answer

Maxillary retrusion

Answer

Mandibular protrusion

Answer

Mandibular retrusion

Answer

Maxillary protrusion

Question 6

In cleft lip operations, when are all the stitches typically removed?

Accepted Answer

4th day

Answer

2nd day

Answer

10th day

Answer

14th day

Question 7

A full thickness graft can be obtained from all of the following sites, EXCEPT:

Accepted Answer

Knee

Answer

Eyelids

Answer

Postauricular skin

Answer

Supraclavicular skin

Question 8

Which of the following grafts is more resistant to infection and trauma?

Accepted Answer

Wolfe graft

Answer

Thiersch graft

Answer

Partial thickness graft

Answer

Both Partial thickness graft and Wolfe graft

Question 9

A Z-plasty is performed in which of the following conditions?

Accepted Answer

High frenal attachment

Answer

Shallow sulcus

Answer

Deep sulcus

Answer

Low frenal attachment

Question 10

Which of the following is a method used for cleft lip repair?

Accepted Answer

Wardill's method

Answer

Le mesurier's method

Answer

Tennison's method

Answer

Millard's method

Plastic and Reconstructive Surgery — MCQs

Plastic and Reconstructive Surgery — MCQs

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