Injection laryngoplasty uses:
**Core Concept**
Injection laryngoplasty is a minimally invasive procedure used to treat vocal cord paralysis or weakness, where injectable materials are used to alter the vocal cord's position and improve voice quality. This technique is often employed as an alternative to more invasive surgeries.
**Why the Correct Answer is Right**
The procedure involves injecting a substance, typically a gel-like material or a hydrogel, into the vocal cord to alter its position and tension. This helps to improve voice quality by enhancing vocal cord closure and reducing vocal fatigue. The injectable material is usually absorbed by the body over time, making the procedure reversible.
**Why Each Wrong Option is Incorrect**
**Option A:** This option is incorrect because it does not specify a material used in injection laryngoplasty. While some materials might be used in other medical procedures, they are not typically used in injection laryngoplasty.
**Option B:** This option is incorrect because it does not accurately describe the primary purpose of injection laryngoplasty. While vocal cord paralysis can cause breathing difficulties, the primary goal of the procedure is to improve voice quality.
**Option C:** This option is incorrect because it does not accurately describe the type of material used in injection laryngoplasty. While some injectable materials might be used in other medical procedures, they are not typically used in injection laryngoplasty.
**Clinical Pearl / High-Yield Fact**
Injection laryngoplasty is often used to treat unilateral vocal cord paralysis, where one vocal cord is weakened or paralyzed, leading to voice quality issues. This procedure can provide significant improvements in voice quality and is often less invasive than traditional surgical options.
**Correct Answer:** C. Collagen.