• A place where two or more bones meet. Think of it as a handshake between bones!
• Purpose: Increase body mobility.

🤔 Imagine: How would you drink your favorite soda without an elbow joint? Or make that epic free throw in basketball? It'd be impossible!

• Based on Joint Cavity
  • Do bones have a gap (space) between them? That's the joint cavity.
• Based on Shape or Tissue Connecting Bones
  • Shapes vary: Some allow multiple movements; some allow only a bit.

🌍 Real World Example: Think of door hinges. Some doors only open one way (like most of our bedroom doors). Some revolve in multiple directions (like the entrance of fancy hotels). Joints work similarly!

• Golden Rule: The more a joint moves, the less stable it usually is. It's like trading flexibility for stability.
• Risk Alert: More movement = Higher risk of getting hurt.

Factors Impacting Joint Stability 🛠️

• Bone Shape: Do they fit perfectly, like puzzle pieces?
• Contact Area: How much of the bone surfaces touch each other?
• Ligament Flexibility: Imagine ligaments as elastic bands. How far can they stretch?
• Soft Tissues: Muscles, tendons, joint capsules – they're all VIP guests at the joint party!