Sudden knee pain, unable to bend, and painful upon pressing.

May 13, 2023 Source: Cainiu Health

Dr. Lin Yunfei

Introduction

Sudden knee pain, inability to bend, and tenderness upon pressing may be caused by ligament strain, osteoarthritis, meniscus injury, or other reasons, and treatment should be selected based on the underlying cause. Besides the above-mentioned causes, bone spurs (osteophytes) could also be responsible. Patients should ensure adequate rest, avoid strenuous exercise, and seek timely medical attention at a hospital if symptoms become severe.

Generally, sudden knee pain with an inability to bend the knee and tenderness upon pressing may be caused by ligament strain, osteoarthritis, meniscus injury, or other reasons. A detailed analysis is as follows:

1. Ligament Strain

If the knee joint is excessively twisted during physical activity, it can overstretch the ligaments surrounding the knee, causing significant injury. This often results in symptoms such as pain, swelling, and restricted movement. These symptoms can be improved under medical guidance through methods such as local ice application, compression bandaging, and immobilization with a brace.

2. Osteoarthritis

When osteoarthritis develops in the knee joint, excessive inflammatory stimulation can cause pain and swelling, leading to stiffness in the affected joint. Patients may feel unable to bend the knee, and movement may become limited due to pain. Treatment may include medications such as glucosamine hydrochloride capsules, ibuprofen sustained-release capsules, or acetaminophen tablets, taken under a doctor's guidance.

3. Meniscus Injury

The meniscus can be damaged when the knee experiences rotational force or heavy compression, resulting in severe knee pain, significant swelling, and a sense of instability while walking. Medications such as ibuprofen tablets, diclofenac sodium sustained-release tablets, or meloxicam capsules may be used according to medical advice.

In addition to the above causes, similar symptoms may also result from bone spurs, rheumatoid arthritis, gouty arthritis, or other conditions. Patients should ensure adequate rest, avoid strenuous exercise, and seek timely medical attention at a hospital if symptoms become severe.

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