Knee injuries after a car crash: stability comes first
An orthopedic knee specialist and a physical therapist on a steady knee and safe walking
In a collision, your knee can slam into the dashboard or twist as your body shifts. The pain may come from bone, a ligament, cartilage or several of these at once. An orthopedic knee specialist examines the injury and decides what needs protecting. Once the diagnosis and limits are clear, a physical therapist helps you rebuild walking and strength. [1, 2]
Explain what your knee can and can't do
Show your doctor where it hurts. Say whether the swelling came on fast or later. Does the knee buckle, catch, lock or refuse to straighten? Can you put weight on it? Get a prompt exam if the knee looks misshapen, won’t hold you up or can’t bend or straighten normally. Being able to move it a little doesn’t prove it’s only bruised. [1]
Ask which injuries were ruled out
Ask whether the team looked for a fracture or an injury to a ligament, the kneecap or the meniscus. The meniscus is a cushion of cartilage inside the knee. An X ray checks the bones. If the exam suggests a soft tissue injury, other imaging may be considered. Ask what the first test answered and what is still unknown. [1, 2]
Does the knee stay unstable or lock up? Book a follow up visit, even if the first images showed no fracture. If you got a brace or crutches, ask for a clear rule on how much weight the leg can take. Ask someone to show you how to use them. Advice like “use as needed” may be too vague if the knee gives out on stairs. [1, 2]
Find out if the brace stays on while you sleep or bathe and when you can start exercises. Stick to the plan for your own injury. [2]
Watch the leg below the knee
Call your care team promptly if pain or swelling keeps growing or your foot turns cold or changes color. Do the same for loss of feeling or new weakness. A knee that is red and warm, along with a fever, also needs medical care. Report any new swelling, pain or color change in the calf. Don’t write it off as part of a sore knee. [1, 2]
Before you go back to work or driving, think through ordinary movements. Those include getting in and out of a chair, climbing steps and braking hard. Ask your doctor which tasks are safe now and what will show the knee is ready for more. Recovery means a stable leg you can trust. A lower pain score is only part of it. [1, 2]
- Which part of my knee is injured, and what is still being checked?
- How much weight can I put on this leg?
- When should a wobbly or swollen knee bring me back?
Test the knee during one daily task
Pick one daily task and note whether the knee buckles, locks or won’t straighten while you do it. Get prompt care if you can’t put weight on the leg or the joint looks deformed. [1]
Sources and further reading
General information from orthopedic and physical therapy viewpoints. Get a prompt medical exam for a knee that looks deformed or can’t bear weight. New signs of a blood flow or nerve problem need the same quick care.
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