Factors affecting joint flexibility and stability include the area difference between the two joint surfaces, the joint capsule, joint ligaments and muscles.
1. Area difference between the two joint surfaces: If the area difference is large, the range of motion is large. If the area difference is small, the range of motion is limited.
2. Joint capsule: If the joint capsule is thick and tense, joint flexibility is small. If the joint capsule is thin and loose, the flexibility of the joint is large and the stability is small.
3. Joint ligaments: if the ligaments are many and strong, the stability of the joint will be increased. With fewer and weaker ligaments, the joint becomes more flexible and less stable.
4. Muscles: If the muscles around the joint are large and strong, the stability of the joint is large. Fewer and weaker muscles result in less stability.
The above factors will affect the flexibility and stability of the joints. If you have any discomfort such as joint pain, it is recommended to go to the hospital in time.