Flashcards on Ear Reconstruction and Microtia Surgery
Ear Reconstruction & Microtia Surgery: A Student Guide
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Techniques and Approaches for Ear Reconstruction
263 cards
Card 1
Question: What early surgical techniques were used for auricle reconstruction historically (before the 20th century)?
Answer: A cheek flap for the earlobe (Susruta Samhita), retroauricular flaps described by Tagliacozzi (1597), and an advancement flap for the middle third of
Card 2
Question: When did the systematic development of repairs for congenital auricular defects, such as prominent ear, begin?
Answer: In the late 19th century, surgeons began addressing congenital defects, particularly prominent auricles.
Card 3
Question: What did Gillies do in 1920, and why was it significant for auricle reconstruction?
Answer: In 1920, Gillies implanted carved costal cartilage under the mastoid skin and later separated it using a cervical flap – marking the beginning of the
Card 4
Question: What problems emerged with the use of maternal ear cartilage in Gillies' reconstructions (1937)?
Answer: The implanted maternal cartilage progressively resorbed, leading to non-permanent results.
Card 5
Question: What was Tanzer's (1959) crucial contribution to ear reconstruction?
Answer: Tanzer used autogenous costal cartilage carved as a solid block; his results were durable over time and represented a breakthrough.
Card 6
Question: Why did alloplastic materials (e.g., silicone, polyethylene, Medpor) fail in auricle reconstruction?
Answer: Alloplasts had a high incidence of extrusion and infection (sinus tract, exposure), leading to failure or the need for implant removal.
Card 7
Question: How did Cronin attempt to minimize the extrusion of silicone frameworks, and with what result?
Answer: Cronin covered alloplastic frameworks with fascia lata or galea/fascia, which temporarily reduced extrusions, but ultimately these alloplasts often ex
Card 8
Question: What is meant by a 'prefabricated' cartilage framework, and who first applied this idea?
Answer: A prefabricated framework involves creating a framework from small bone/cartilage particles within a mold banked in tissue before definitive reconstru
Card 9
Question: What were the problems with Young and Peer's 'diced cartilage' method for framework prefabrication?
Answer: The final framework was inconsistent: fibrotic tissue contracted around numerous cartilage islands, deforming the resulting shape and leading to a fla
Card 10
Question: What are the main challenges of the current tissue engineering approach for ear framework creation?
Answer: 1) Obtaining a sufficient number of chondrocytes from a small sample (requiring ~25–50 million cells/mL and a mold volume of ~5 cc). 2) Ensuring that