Do i need to go hospital if my knee buckled and then you fell on it?

It depends on the severity of your injury.

If you are able to walk on your knee without pain, swelling, or bruising, then you may not need to go to the hospital. However, if you are experiencing any of the following symptoms, then it is important to see a doctor or go to the hospital:

- Severe pain

- Swelling

- Bruising

- Difficulty walking

- Deformity of the knee

- Inability to bear weight on the knee

- Popping or clicking sound at the time of injury

- Fever

If you are unsure about the severity of your injury, it is always best to err on the side of caution and seek medical attention. A doctor will be able to evaluate your injury and determine if you need further treatment.