About this video
Last updated: 9 October 2026
The video says an inward collapse of the knee during sport, a valgus movement, is an indicator of MCL strain. Athletes often feel a sharp inner knee pain, followed later by swelling or a sense of looseness when they pivot, the video says.
Key points
- It says this movement places sudden tension on the inner knee ligament.
- The video mentions rest and strengthening for mild strains.
- It says that if the knee continues to feel unstable or pain flares with cutting movement, that often indicates a deeper strain or involvement of the meniscus or the ACL.
Questions this video answers
What are the signs of an MCL strain in sport?
The video says athletes often feel a sharp inner knee pain, followed later by swelling or a sense of looseness when they pivot. It names an inward collapse of the knee, called a valgus movement, as an indicator.
When might an MCL strain involve other parts of the knee?
The video says that if the knee continues to feel unstable, or pain flares with cutting movement, that often indicates a deeper strain or involvement of neighbouring structures such as the meniscus or the ACL.




