**Question:** Type of cartilage seen at temporo-mandibular joint is -

A. Hyaline cartilage
B. Elastic cartilage
C. Fibrocartilage
D. Glycocalyx

**Core Concept:**
The temporomandibular joint (TMJ) is a synovial joint located between the mandibular condyle and the temporal bone, allowing for jaw movement. The TMJ has a unique structure compared to other joints in the body due to the presence of a disc and the articulating surfaces. The type of cartilage found at the TMJ is crucial for understanding its function and pathology.

**Why the Correct Answer is Right:**
The correct answer is C. Fibrocartilage because it is the type of cartilage found in the TMJ. Fibrocartilage consists of dense collagen fibers, which provide strength and stability to the joint. The fibrocartilage in the TMJ is called the disc, which acts as a cushion between the mandibular condyle and the temporal bone. This unique cartilage type allows for the smooth, stable movement required for jaw function.

**Why Each Wrong Option is Incorrect:**
A. Hyaline cartilage is the type found in other synovial joints but not in the TMJ due to its stability requirements.
B. Elastic cartilage is found in structures that require flexibility, like the Eustachian tube, not the TMJ.
D. Glycocalyx is a thin, gel-like substance on cell surfaces, not a type of cartilage found in joints.

**Clinical Pearl:**
Understanding the specific type of cartilage found in the TMJ is crucial for understanding joint function and recognizing potential pathologies. An abnormal TMJ can lead to temporomandibular joint disorder (TMD), which affects jaw movement and causes pain. Knowing the correct type of cartilage in the TMJ can help diagnose and treat TMD effectively.