Knee Injury After Car Accident: Loss of Temperature Sensation Explained

Knee loss of temperature sensation due to car accident injury?

I previously sustained a knee injury from a car accident and had an X-ray taken.
The emergency physician indicated that there was no bone damage.
It has been over three months, and I experience pressure and pain in my knee, but I cannot sense temperature changes.
What should I do about this?

Amber, 20~29 year old female. Ask Date: 2020/03/04

Dr. Shi Guozheng reply Orthopedics

After a knee joint contusion, it is possible that the superficial nerves in the skin have been injured, which can lead to sensory abnormalities in the skin.
It is advisable to continue monitoring the condition, as sometimes recovery may occur gradually over six months to a year.
Additionally, taking medications that promote blood circulation or active vitamin B12 may aid in nerve repair.
These options may provide some benefit, so it is worth trying.

Reply Date: 2020/03/04

More Info

After a car accident, it is not uncommon to experience various symptoms related to knee injuries, especially when there is a history of trauma. In your case, the loss of temperature sensation in the knee, despite having normal pressure and pain sensations, can be attributed to nerve damage or irritation that may have occurred during the injury.
When the skin or underlying tissues are injured, the sensory nerves that transmit information about temperature can be affected. This can lead to a condition known as "sensory neuropathy," where the affected area may not respond to temperature changes as it normally would. The fact that you have pressure and pain sensations indicates that some nerve pathways are intact, but the specific pathways responsible for temperature sensation may have been compromised.
This type of nerve damage is often temporary, and many patients experience gradual recovery over time. It is not unusual for sensory nerves to take longer to heal than other types of tissues. In some cases, full recovery can take several months to a year. During this healing process, it is essential to monitor your symptoms and maintain communication with your healthcare provider.

To help facilitate recovery, there are several strategies you can consider:
1. Physical Therapy: Engaging in physical therapy can help improve mobility and strengthen the muscles around the knee. A physical therapist can also provide exercises that promote nerve healing and improve overall function.

2. Medication: Some medications, such as those that promote blood circulation or vitamin B12 supplements, may aid in nerve repair. Vitamin B12 is particularly important for nerve health, and deficiencies can lead to neurological symptoms.

3. Gentle Activity: While it may be tempting to avoid using the knee due to discomfort, gentle and gradual movement can help stimulate blood flow and promote healing. Activities like walking or cycling on a stationary bike can be beneficial.

4. Monitoring Symptoms: Keep track of any changes in your symptoms, including the return of temperature sensation or any new symptoms that may arise. If you notice worsening pain, swelling, or other concerning signs, it is crucial to seek medical attention promptly.

5. Follow-Up Appointments: Regular follow-ups with your healthcare provider or orthopedic specialist are essential. They can assess the healing process and determine if further imaging or interventions are necessary.

In conclusion, while the loss of temperature sensation in your knee after a car accident can be concerning, it is often a temporary issue related to nerve damage. With appropriate care, monitoring, and rehabilitation, many individuals experience significant improvement over time. If you have ongoing concerns or if your symptoms change, do not hesitate to reach out to your healthcare provider for further evaluation and guidance.

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