When Is Knee Surgery Really Necessary?

Watch: घुटने की सर्जरी कब ज़रूरी है? | Knee Replacement का सच | Dr. Sumedh Sandanshiv | Sarvesh Mishra (~46 min)

This article summarizes the discussion in the episode. Medical treatment and surgery decisions should be made after an individual assessment by a qualified healthcare professional. It is not personal medical advice, diagnosis or a recommendation for or against surgery.

Knee Pain Is Common, But Does Every Knee Problem Need Surgery?

Knee pain is increasingly becoming a concern across different age groups. What was once commonly associated with older adults is now being discussed among younger people as well.

But one important question remains: when is knee replacement actually necessary?

Does every knee pain mean arthritis? Does walking or climbing stairs destroy the cartilage in your knees? Can gym injuries be prevented? How long does a knee replacement last? Can you cycle, swim or trek after surgery? And what role do weight, exercise, smoking, nutrition and mental health play in joint health?

These questions were discussed in depth on The Sarvesh Mishra Show with orthopaedic surgeon Dr. Sumedh Sandanshiv. The conversation goes beyond surgery. It explores how people can understand their bodies better, identify warning signs, seek appropriate medical advice and make informed decisions about knee treatment. Read the show explainer at What Is The Sarvesh Mishra Show?

What This Article Covers

• When is knee replacement necessary?
• What actually happens during knee replacement surgery?
• Does every knee pain mean arthritis?
• Why are younger people experiencing knee problems?
• Why can knee problems be common among women?
• Does walking or climbing stairs damage knee cartilage?
• What is a “weekend warrior” and why can it cause injuries?
• Can exercise protect your knees?
• How long can a knee replacement last?
• Can you cycle, swim or trek after knee replacement?
• What role does body weight play?
• Why is smoking a concern for bone healing?
• Are calcium supplements necessary?
• Why are physiotherapy and mindset important after surgery?
• Five principles for maintaining joint health

When Is Knee Replacement Really Necessary?

One of the most important discussions in the episode is that knee replacement should not automatically be considered for every person with knee pain.

According to Dr. Sandanshiv, the decision becomes particularly relevant when structural damage is significant and the person's daily life is being seriously affected. Examples discussed in the episode include difficulty with walking, climbing stairs, going to the bathroom independently, performing normal daily activities, maintaining mobility, and living a productive and socially active life.

The episode also emphasizes that knee replacement is generally an elective procedure rather than an emergency operation. The broader medical guidance is consistent with this principle: knee replacement is generally considered when pain and movement problems significantly affect quality of life and non surgical treatments have not provided sufficient relief.

Does Every Knee Pain Mean Arthritis?

No. This is one of the key distinctions made during the conversation.

Dr. Sandanshiv explains that younger people experiencing knee pain do not necessarily have arthritis. Pain can have different causes, and identifying the underlying reason is important before considering surgery. For younger patients, the episode discusses possibilities such as sports injuries, trauma, ligament injuries, lifestyle related problems, autoimmune conditions, cartilage damage and other underlying medical conditions.

This is particularly important because knee replacement in younger people is relatively uncommon, according to the discussion. The lesson is simple: do not assume that knee pain automatically means you need a knee replacement. Find the cause first. Related: Gurnandan Singh on brain optimization.

What Actually Happens During Knee Replacement?

Many people imagine that the entire knee is simply removed and replaced with a completely new joint. The actual procedure is more specific.

As explained in the episode, when the joint has severe damage, the damaged joint surfaces are removed and replaced with prosthetic components. A knee replacement generally involves resurfacing the damaged surfaces of the femur and tibia using artificial components. Depending on the extent of damage, a person may receive a total or partial knee replacement.

The objective is not simply to “put in a new knee”. The objective is to reduce pain, improve movement and restore useful everyday function.

How Long Does a Knee Replacement Last?

A major concern for patients is: “If I get a knee replacement today, will I need another one later?”

During the interview, Dr. Sandanshiv explains that a knee replacement can potentially last around 20 to 25 years when circumstances are favorable, including appropriate care and absence of major complications. Current NHS guidance similarly states that many knee replacements last 20 years or more, although individual outcomes vary.

This is particularly relevant when discussing surgery in younger patients because age, activity level, implant factors and future revision requirements can all matter. A surgeon should therefore assess the individual case rather than using age alone to decide whether surgery is appropriate.

The Biggest Myth: “Walking Uses Up the Grease in Your Knees”

One of the most interesting parts of the episode addresses the common belief that excessive walking or climbing stairs simply “finishes the grease” in the knees.

Dr. Sandanshiv explains that what people commonly call “grease” is related to synovial fluid, while cartilage is another important structure protecting the joint surfaces. In osteoarthritis, cartilage can become damaged and progressively deteriorate. When joint surfaces become severely damaged, pain, stiffness and movement limitations can occur.

However, the presence of a clicking or cracking sound alone does not automatically mean that the joint has been destroyed. The more important warning signs are persistent symptoms, pain, stiffness, swelling, restricted movement or a noticeable decline in everyday function.

Why Are Younger People Getting Knee Problems?

The episode challenges the assumption that knee problems are purely an age related issue. Dr. Sandanshiv explains that younger people can develop joint problems because of several different factors, including previous injuries, severe trauma, cartilage damage, autoimmune disorders, certain medical conditions, poorly managed physical activity and other underlying causes.

The important message is that age alone does not diagnose arthritis. If a younger person has persistent knee pain, the priority should be identifying the actual cause rather than assuming that a replacement is required.

Women and Knee Health

The discussion also explores why Dr. Sandanshiv sees a high proportion of female patients for knee replacement. The episode discusses hormonal changes, post menopausal changes, bone health and changes in calcium metabolism as factors that can influence musculoskeletal health.

However, these factors do not mean that every woman will develop arthritis or require knee replacement. The appropriate approach is individual assessment, especially when persistent pain, stiffness or mobility problems develop. Related: Dr. Vishnu Mane on Garbh Sanskar.

Are Gym Injuries Increasing?

Another important topic is the growing popularity of gyms and sports. The doctor introduces the concept of the “weekend warrior”. This describes people who remain relatively inactive during the week and then suddenly perform intense exercise during their free time.

The problem is not exercise itself. The problem can be doing too much, too quickly, without appropriate preparation or progression. A safer approach discussed in the episode is: start gradually, understand your body's capacity, warm up, build strength progressively and seek professional guidance when necessary.

For people with knee osteoarthritis, low impact activities such as walking, cycling and swimming are commonly recommended options, while exercise programs should be adapted to the individual's condition. Related: Yogacharya Dhakaram on yoga as a career.

Does Body Weight Affect Knee Health?

Body weight is another major theme of the conversation. Dr. Sandanshiv emphasizes that excess body weight can increase the mechanical load placed on the knees. Maintaining a healthy weight is also recognized in general osteoarthritis guidance as an important part of managing symptoms and reducing joint stress.

This does not mean that weight is the only cause of knee disease. Rather, weight management can be one component of a broader joint health strategy involving regular movement, muscle strengthening, appropriate nutrition, sleep, injury prevention and medical care when necessary.

Can You Exercise After Knee Replacement?

A common fear is that knee replacement means giving up physical activity permanently. The episode discusses several activities that may be possible after recovery, including cycling, swimming and some forms of trekking depending on the individual and the terrain.

Dr. Sandanshiv specifically discusses cycling as a useful activity after knee replacement. Swimming is also discussed as an activity that can be performed after appropriate recovery. However, this does not mean that every patient should immediately return to every activity. Post operative activity should follow the treating surgeon's and physiotherapist's guidance. Recovery varies between individuals, and rehabilitation plays an important role in restoring strength and movement.

Smoking and Bone Healing: An Important Warning

One of the strongest messages from the episode concerns smoking and nicotine. Dr. Sandanshiv explains that smoking can negatively affect bone healing and discusses cases where continued smoking contributed to problems with healing.

This is not merely an opinion about lifestyle. Orthopaedic guidance recognizes smoking as a negative factor for bone healing, and hospitals commonly advise patients preparing for knee replacement to stop smoking. The broader lesson is: if you are undergoing orthopaedic treatment, discuss smoking and nicotine use honestly with your healthcare team.

Do You Need Calcium Supplements?

The episode also addresses the popularity of calcium supplements. Dr. Sandanshiv's message is that supplementation should depend on an individual's actual requirements rather than automatically taking calcium without assessment.

This is an important distinction. More supplements do not automatically mean stronger bones. Nutritional requirements vary according to age, sex, health status, diet and other factors. If you are concerned about bone health, discuss appropriate testing and supplementation with a qualified healthcare professional rather than self prescribing.

Is Cracking or Clicking in the Knee Dangerous?

Many people hear a clicking or cracking sound and immediately assume their cartilage is disappearing. The episode explains that joint sounds can occur without necessarily indicating serious damage. However, sound plus symptoms deserves more attention.

If clicking or cracking is accompanied by persistent pain, swelling, stiffness, reduced mobility, difficulty performing normal activities, or symptoms that persist for weeks, medical evaluation may be appropriate. Persistent osteoarthritis symptoms should be assessed by a healthcare professional rather than diagnosed from sounds alone.

Surgery Is Not Always the First Option

One of the strongest messages from the conversation is: surgery should not automatically be the first solution. For earlier stages of osteoarthritis, the episode discusses conservative management, including lifestyle changes, muscle strengthening and activity modification.

Medical guidance similarly recommends approaches such as exercise, weight management, physical therapy and medication before considering joint replacement in appropriate patients. But delaying surgery indefinitely is not necessarily the answer either. If structural damage becomes severe and daily life is significantly restricted, continuing to live with disabling pain may not be the best long term strategy. The right decision depends on the individual's condition.

The Role of Physiotherapy and Mindset After Knee Replacement

A successful operation is only one part of recovery. The episode places considerable emphasis on rehabilitation, muscle strength and patient confidence. After surgery, the patient needs to learn how to use the new joint and rebuild strength.

The episode discusses physiotherapy, including continued support during the early recovery period. Current guidance also emphasizes early movement, physiotherapy and prescribed exercises following knee replacement. The broader message is powerful: the surgeon replaces or repairs the damaged structure. The patient still has an important role in rehabilitation.

Five Principles for Better Joint Health

The episode ultimately brings joint health down to a simple five point framework.

1. Maintain overall health. Your joints are part of the larger body system.
2. Sleep properly. Recovery and overall wellbeing depend on adequate rest.
3. Stay physically active. Movement and muscle strengthening can support joint function.
4. Build muscle strength. Strong supporting muscles can help you maintain mobility and physical function.
5. Prevent avoidable injuries. Progress gradually, use appropriate technique and avoid suddenly pushing your body beyond its capacity.

When Should You See a Doctor for Knee Pain?

A useful takeaway from the episode is that persistent pain should not simply be ignored. If knee pain continues despite reasonable lifestyle changes or begins interfering with everyday activities, professional assessment can help identify the underlying cause.

Especially seek medical evaluation when pain is accompanied by difficulty walking, difficulty climbing stairs, swelling, loss of movement, persistent stiffness, repeated injuries, or a reduced ability to perform normal activities. Early assessment does not automatically mean surgery. It means understanding the problem before deciding what to do about it.

Frequently Asked Questions

Medical Disclaimer

This article is based primarily on the conversation featured on The Sarvesh Mishra Show and is intended for general educational and informational purposes. It should not be considered personal medical advice, diagnosis or a recommendation for or against surgery. Knee pain and joint conditions can have different causes. Consult a qualified orthopaedic or medical professional for an examination, diagnosis and treatment plan appropriate to your individual condition.

Watch Dr. Sumedh Sandanshiv's full conversation with Sarvesh Mishra and use it as a starting point for informed questions with your own doctor. More guests live in the guest index and the writings archive.

Sarvesh Mishra is an Indian entrepreneur, journalist, interviewer, author and storyteller. His career spans nearly two decades, including extensive experience in television and ground reporting across different parts of India. He is the Founder of Red Hot Media House Pvt. Ltd. and CureSoulLife Pvt. Ltd., and the host of The Sarvesh Mishra Show. He is also the author of Love With Benifit.