2 doctors weighed in:
What causes the pain with an anterior cruciate ligament (acl) injury?
2 doctors weighed in

Dr. Bernard Bach Jr
Orthopedic Surgery
In brief: Meniscal tears.
You may have associated meniscal tears, that can be responsible for the pain.
Or, the swelling of the knee itself, can be causing the pain.

In brief: Meniscal tears.
You may have associated meniscal tears, that can be responsible for the pain.
Or, the swelling of the knee itself, can be causing the pain.
Dr. Bernard Bach Jr
Dr. Bernard Bach Jr
Thank
Dr. Robert Purchase
Orthopedic Surgery
In brief: Instability
In the acute phase, the rupture ligament will hurt.
Additionally, the knee will fill with blood right after the injury. This hurts. Finally, there are often associated injuries, eg meniscus tears or bone bruises, that hurt. After the acute pain resolves, people with an acl deficient knee are limited by the subtle instability which can be felt as soreness or as instability.

In brief: Instability
In the acute phase, the rupture ligament will hurt.
Additionally, the knee will fill with blood right after the injury. This hurts. Finally, there are often associated injuries, eg meniscus tears or bone bruises, that hurt. After the acute pain resolves, people with an acl deficient knee are limited by the subtle instability which can be felt as soreness or as instability.
Dr. Robert Purchase
Dr. Robert Purchase
Thank
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