How do doctors decide if you need a knee replacement?

Knee pain can gradually change how you walk, perform work, exercise, and do your daily activities. Rest often eases pain. Chronic joint pain can point to joint damage. Most knee problems resolve with the help of non-surgical treatments. When they don’t, your doctor may recommend a knee replacement. In most cases, the decision comes down to other treatments no longer working.

Doctors take into consideration a number of issues such as the causes and severity of your symptoms, the results of your physical examination, imaging studies, and the impact of the condition on your daily functioning. Knowing how the decision is made helps you ask better questions and feel more in control.

Causes of knee joint pain

Ageing is not the only factor that causes joint damage. Several conditions can damage knee joint and are as following:

• Osteoarthritis
• Rheumatoid arthritis
• Injuries
• Overuse
• Gout
• Bursitis
• Tendon problems
•  Infection

You need a knee replacement: Deciding Factors

Here’s what your doctor weighs when deciding on a knee replacement.

Symptoms you are Experiencing

First, your doctor identifies the nature of your symptoms by inquiring into the site, severity, frequency, and pattern of pain. Prolonged pain that affects your daily activities requires careful evaluation. Pain may occur when you walk, climb stairs, stand, or even get out of a chair. You may get pain at night or pain after activity.

Stiffness, swelling, loss of movement, and instability are some other symptoms that your doctor can evaluate.

How much pain is Affecting your daily life?

The way that you function every day matters a lot. Sometimes two patients have very similar X-rays but very different degrees of difficulty. Your physician may inquire whether or not you can walk easily, climb stairs, dress yourself, stand for long periods of time, and perform household and work-related tasks. If knee pain stops you doing what matters most, it plays its part in the recommendation of surgery.

The purpose of knee replacement surgery in this scenario is to improve the way that you function and decrease pain.

What does a physical examination show?

Through the physical exams the doctor comes to know the functionality of your knee. Your doctor will check flexibility, swelling, pain, knee alignment, instability, and muscle strength. The doctor will ask you to move your knee and will observe the movement. The way you move and any change in the alignment give an indication of where the symptoms arise from and the extent of the condition.

What are the test results?

Imaging also plays a vital role in the diagnosis process. X-rays will reveal signs related to advanced arthritis, which include joint space narrowing, bone changes, and misalignment.

If your doctor requires further imaging, an MRI may be performed in order to get a clear picture of soft tissue structures and possibly to investigate other reasons for the symptoms.

The results of imaging tests alone can’t determine your condition. For instance, you may have major changes in your X-ray picture and no significant symptoms. Someone else may have pain with a clear X-ray.

Outcomes of previously tried treatments

Joint replacement is usually a last resort for physicians following other, less-invasive forms of treatment. These may depend on the cause of the problem and could include physiotherapy, exercise, weight loss if applicable, pain medication, adjustment of physical activities, the use of assistive devices for walking, and/or injections. 

The treatment will depend on your particular circumstances. Many people find these methods effective and don’t need surgery. Knee replacement is only considered if these treatments stop working.

Is knee damage severe?

Knee replacement is usually considered when osteoarthritis has caused severe joint damage. Arthritis can gradually wear down the cartilage that cushions the bones and supports smooth movement. In some cases, arthroscopic knee surgery may be considered to evaluate or treat certain knee joint conditions, depending on the underlying problem and clinical assessment.

With the degeneration of the cartilage, it causes pain and stiffness in the joints, and doctors assess the level of degeneration based on the symptoms and examination. What matters is why the joint is damaged.

It can be osteoarthritis, inflammatory arthritis, or some other conditions.

Does your overall health allow surgery?

As this procedure involves major surgery, your general condition must also be reviewed by your physician. There may be other factors such as diseases or previous surgeries that your doctor may take into consideration during your consultation.

Some health problems that might have an impact on surgery must be identified before surgery. Blood tests or a heart check may be needed first. This helps your team plan surgery and lower avoidable risks.

Does your age determine whether you need a knee replacement?

Age is not the deciding factor for the need for knee replacement. Doctors place more weight on the signs, joint condition, functional impairments, general health, and the potential benefits from the procedure.

People of any age can have knee replacement surgery. It would be based on your personal situation rather than a particular age limit. Your knee condition and its impact on your activities may be more significant than just your age.

The bottom line

Knee replacement surgery is typically recommended when there is a combination of conditions like chronic pain, joint deterioration, decreased movement or functionality, and failure to improve using the right nonsurgical treatments. No single test or symptom decides you need a knee replacement. Your doctor uses your medical background, your exam findings, imaging studies, your reaction to treatment, and your goals.

When you experience knee pain that affects your daily activities, see an orthopedic doctor for a personalized evaluation. It will determine whether to keep going with nonsurgical treatment, additional investigation, or knee surgery.