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What is pcl injury?
The posterior cruciate ligament limits backward movement of the shin bone. Injury can follow a fall on a bent knee, a dashboard impact, or hyperflexion and may be managed with rehabilitation or surgery depending on severity.
The same label can behave differently from one person to the next. The timing, location, type of symptoms, injury mechanism, and response to movement help distinguish a local tissue problem from referred pain, nerve involvement, or a pattern that should be evaluated elsewhere first.
How pcl injury may show up
People do not need every sign below to fit this pattern. They are useful clues to discuss during an evaluation, especially when paired with what changes the symptom and what activity has become difficult.
- pain behind or inside the knee
- swelling after impact
- instability on slopes or stairs
- difficulty decelerating
Why it can start or persist
A contributor is not always a single cause. Tissue capacity, recovery, the size of a recent load change, and the mechanics of the task can overlap. For pcl injury, the history commonly examines:
- 1direct force to the shin
- 2fall on a flexed knee
- 3multi-ligament trauma
How the pattern is examined
An assessment begins with the story, then tests the findings that can change a decision. For this presentation, that usually means looking at the items below and comparing them with the demands of work, daily life, or sport.
Imaging can be useful when the history or examination indicates it, but a scan is not a substitute for matching the finding to symptoms, function, and the clinical screen.
Clinically reviewed
Reviewed by Dr. Tamara Lovelace, DC, DACBSP, ICCSP, Chiropractic Sports Doctor and clinic director, on August 25, 2026.
This page explains what we look at and what care can involve. It is not a diagnosis, and it cannot replace an examination. Bring the problem in and a provider will tell you what is going on.
