Test on Reconstruction of the Ear

Question 1: Minor losses in the upper third of the auricle are repaired by helical advancement or a preauricular flap.

A. Ano

B. Ne

Explanation: The study materials state that 'Usually, minor losses are confined to the rim and are repaired either by helical advancement, as previously described, or by a readily accessible preauricular flap.'

Question 2: According to Antia and Buch's helical advancement technique for reconstructing helical rim defects, what is a crucial step for the success of the procedure?

A. Placing a cartilage graft from the contralateral concha.

B. Totally freeing the entire helix from the scapha via an incision extending through the cartilage but not the skin on the ear’s back surface.

C. Utilizing thin-calibered tubes constructed from retroauricular skin.

D. Anchoring the cartilage graft to the cartilaginous remnant of the helical root with a suture.

Explanation: The study materials state that the success of the helical advancement technique, as described by Antia and Buch, depends first upon totally freeing the entire helix from the scapha via an incision in the helical sulcus which extends through the cartilage but not through the skin on the ear’s back surface. The other options describe different reconstruction methods or specific steps not primarily associated with the Antia and Buch helical advancement technique.

Question 3: In the Brent and Byrd method for secondary ear reconstruction, the sculpted autogenous rib cartilage graft is typically placed several weeks after the excision of the auricular scar area.

A. Ano

B. Ne

Explanation: Brent and Byrd's method for secondary ear reconstruction involves immediately placing a sculpted autogenous rib cartilage graft after the excision of the entire auricular scar area.

Question 4: According to the study materials, which of the following are appropriate repair strategies for constricted ears, depending on the severity of the deformity?

A. Excising overhanging tissue when helical lidding is the main defect and height discrepancy is minimal.

B. Augmenting cartilage height by modifying ipsilateral ear cartilage or employing contralateral conchal cartilage grafts for moderate height discrepancies.

C. Using the cartilage lid as a 'banner flap' to increase ear height.

D. Only adding skin to correct the deformity, even for severe constriction.

Explanation: The study materials state that if helical lidding is the main defect and height discrepancy is minimal, the overhanging tissue can merely be excised. For moderate height discrepancies, augmentation of the cartilage height by modifying the ipsilateral ear cartilage or employing contralateral conchal cartilage grafts is used. The cartilage lid can also be used as a 'banner flap' to increase ear height. However, for severe constriction producing a height difference of 1.5 cm, both skin and cartilage must be added, not just skin.

Question 5: A custom splint is not used to correct the helical fold in neonates with lop ear.

A. Ano

B. Ne

Explanation: Figure 7.27 (B) clearly states that a 'Custom splint [is] used to correct helical fold' in a neonate with lop ear.