Mini attempt e classes

🦷 TMJ (Temporomandibular Joint) – Quick High-Yield Notes 📍 What is TMJ? A hinge + gliding type synovial joint between mandibular condyle and temporal bone. --- 📌 Important Points (Exam + Clinical) ✅ Type of joint: Synovial, bicondylar, modified hinge ✅ Articular surfaces: Mandibular condyle + Mandibular fossa of temporal bone ✅ Articular disc: Fibrocartilage disc dividing joint into upper (gliding) & lower (hinge) compartments ✅ Movements: • Opening & closing of mouth • Protrusion & retraction • Side-to-side grinding --- 🧠 Muscles Involved • Opening: Lateral pterygoid • Closing: Masseter, Temporalis, Medial pterygoid • Protrusion: Lateral + Medial pterygoid • Retraction: Posterior fibers of temporalis --- 🔌 Nerve Supply Auriculotemporal nerve Masseteric nerve (branch of V3) --- 🩸 Blood Supply Maxillary artery Superficial temporal artery --- ⚠️ Clinical Points • Clicking sound = Disc displacement • Pain near ear = TMJ dysfunction • Trismus = Spasm of muscles of mastication