Joints form where one bone connects to another bone, allowing the skeleton to move.
Knee, elbow, and finger joints are all examples of hinge joints.
kali9 / Getty Images
Joint Types
Ajointis formed by the joining of two or more bones together.

kali9 / Getty Images
These include hinge, ball and socket, planar, pivot, saddle, and ellipsoid joints.
What Is a Hinge Joint?
Examples of hinge joints include:
What is an example of a complex joint?
The knee is an example of a complex joint.
Complex joints are made from various articulation surfaces that work together.
Applying ice and using pain-relieving medications likenonsteroidal anti-inflammatory drugs (NSAIDs)can also help reduce pain.
Gupton M, Munjal A, Terreberry RR.Anatomy, Hinge Joints.
[Updated 2023 Jul 24].
In: StatPearls [Internet].
Treasure Island (FL): StatPearls Publishing; 2024 Jan-.
Available from: https://www.ncbi.nlm.nih.gov/books/NBK518967/
Boundless.
General Biology.38.12: Joints and Skeletal Movement - Types of Synovial Joints.
Juneja P, Munjal A, Hubbard JB.Anatomy, Joints.
[Updated 2024 Apr 21].
In: StatPearls [Internet].
Treasure Island (FL): StatPearls Publishing; 2024 Jan-.
Available from: https://www.ncbi.nlm.nih.gov/books/NBK507893/
Arthritis Foundation.Osteoarthritis.
2020;21(5):1690. doi:10.3390/ijms21051690