Knee Pain After 40: What Helps, When You Need a Scan, and When It Is an Emergency

It starts on the stairs. Going down is worse than going up. Getting off the floor after sitting cross-legged takes a hand on the wall, and the first few steps in the morning feel stiff until the knee "warms up". By the time Delhi's winter arrives, many people say their knees ache more than they did in summer.

Most knee pain in adults over 40 is not dangerous, and most of it does not need an operation or even a scan. It does deserve a proper examination, because the right answer depends on what is going on inside the joint.

Why knees hurt

The knee is a hinge between the thigh bone and the shin bone, with the kneecap sliding over the front. Smooth cartilage covers the bone ends, and two rubbery discs called menisci cushion them. Strong thigh muscles take much of the load off the joint.

The common causes, roughly by age:

- Osteoarthritis, the most common reason for knee pain after about 45. The cartilage thins, the bone underneath reacts, and the joint becomes stiff and sore with use. It usually comes on slowly, over months or years, and often affects both knees.

- Pain at the front of the knee, around or behind the kneecap. Common in younger adults and runners, and usually about how the kneecap moves and how strong the thigh and hip muscles are.

- A meniscus or ligament injury, usually after a twist: a turn while playing, a slip on a wet floor, a missed step. The knee may swell within hours, catch, lock, or give way.

- Gout or another inflammatory arthritis, where the knee becomes suddenly hot, red and swollen, sometimes overnight.

- Pain coming from somewhere else. A worn hip or a trapped nerve in the lower back can be felt in the knee. This is one reason the doctor will look at your hip and back, not only the knee.

Symptoms, in the words people actually use

- "My knee is stiff in the morning, but it loosens up after a few minutes"

- "Stairs are the problem, especially coming down"

- "It hurts when I get up from a chair or off the floor"

- "I can hear it crunching" (crunching on its own, without pain, is common and usually harmless)

- "It swells up after a long day on my feet"

- "It catches, or it locks and I have to wiggle it free"

- "It gives way under me"

- "The pain wakes me at night"

The last three are worth an appointment soon rather than waiting to see if they pass.

🔴 When to go to a hospital, not a clinic

Go to a hospital emergency department, or call 112, if:

- You cannot put weight on the leg after a fall or injury, or the knee looks out of shape

- The knee swells up badly within an hour or two of an injury

- The knee is hot, red and swollen, and you have a fever or feel unwell. A joint infection can damage the knee within days and needs treatment straight away

- The knee is locked and will not straighten at all

- Your calf or whole leg is swollen, red or throbbing, especially after a long journey, an operation or a period in bed. This can be a clot in a vein. With chest pain or breathlessness, call 112 now

- The leg below the knee is numb, cold or pale, or you have pins and needles after an injury

Do not drive yourself. Bring any medicines you take, or their strips.

Do I need an X-ray or an MRI?

Often, no, at least not straight away. International guidance, including the UK's National Institute for Health and Care Excellence (NICE), says that in people aged 45 or over, with knee pain that is worse with activity and morning stiffness that lasts no longer than about 30 minutes, osteoarthritis can be diagnosed from the history and the examination alone, without imaging.

This matters for two reasons. First, X-ray changes and pain do not match well. A very worn-looking X-ray can come with little pain, and a painful knee can have a near-normal X-ray. Second, an MRI of an adult knee almost always finds something: small meniscus tears and worn cartilage are common in people with no pain at all. A scan done too early can lead to treatment for a finding that was never the cause.

Imaging is worth doing when it will change the plan:

- An X-ray, when the diagnosis is uncertain, after a significant injury, when the pain is not following the usual pattern, or when surgery is being considered

- An MRI scan, usually after an injury with locking, giving way or major swelling, when a ligament or meniscus tear needs repairing, or when an X-ray does not explain the problem

- Blood tests, when the doctor suspects inflammation, infection or gout

X-ray and MRI are arranged through partner centres. We book the scan for you, and the report comes back to your doctor here.

What actually helps

The treatments with the strongest evidence for knee osteoarthritis are free, and none of them are quick. They work over weeks, not days.

- Strengthen the thigh muscles. Exercise is the core treatment in every major guideline. A Cochrane review updated in 2024 found that exercise probably improves knee pain and function in the short term. Simple, regular work matters more than a perfect programme: straightening the knee against a rolled towel, slow sit-to-stand from a chair, step-ups on the bottom stair. The doctor can show you where to start.

- Keep walking, but pace it. Two shorter walks are kinder to a sore knee than one long one, and flat ground is easier than slopes. A rest day is fine; a rest month is not, because the muscles that protect the knee weaken quickly.

- Lose some weight if you are carrying extra. In one trial in older adults with knee osteoarthritis, every kilogram lost took roughly four kilograms of force off the knee with each step. NICE notes that losing 10% of body weight is likely to help more than 5%, but any loss helps.

- Use what makes walking easier. Cushioned, flat shoes. A walking stick in the hand opposite the bad knee. A chair rather than the floor on bad days.

- Heat for stiffness, ice for a swollen flare, 15 to 20 minutes at a time, wrapped in a cloth.

- Be careful with painkillers. Anti-inflammatory painkillers, whether tablets or gels, can help for short periods, but tablets carry real risks for the stomach, kidneys and heart, especially over 60. Ask the doctor before taking them for more than a few days, and bring the strip of anything you already take.

- Do not spend money on joint supplements or oils sold as knee treatments. NICE found no strong evidence that the commonly sold supplements help.

For a bad flare, the orthopaedic doctor may discuss an injection into the joint. It can settle pain for a few weeks, which can make exercise possible. It is a bridge, not a treatment on its own, and it is not repeated often.

About the winter. Research on whether cold weather worsens knee pain is mixed. The stiffness is real, and the answer is the same as in summer: keep moving.

What we will not do

- We will not send you for an MRI before anyone has examined your knee. If a scan will change the plan, we will tell you which one and why. If it will not, we will say that too.

- We will not recommend a keyhole "wash-out" for a worn knee. For knee pain caused by wear, arthroscopic washing and trimming of the joint has been shown not to help more than exercise, and guidelines advise against it. Keyhole surgery still has a place for some injuries, and the orthopaedic doctor will explain if yours is one of them.

- We will not talk about knee replacement at the first visit unless your knee has already had a proper trial of exercise, weight management and pain relief. A replacement is a good operation for the right person, and the decision is yours to make with the full picture.

- We will not sell you a package of injections, supplements or sessions paid for in advance. Each step is decided at the visit and priced before it is done.

- We do not operate on knees at the clinic. If an operation is ever the right answer, it is carried out at hospital, and the surgeon will explain what is involved.

What it costs

| | Fee |

|---|---|

| General physician consultation | from ₹800 |

| Orthopaedic consultation | ₹1,200 |

| Blood count (CBC), if the doctor suggests it | ₹319 |

| X-ray or MRI, arranged through a partner centre | quoted before it is booked |

Fees are for booking directly with us. Fees for appointments booked through third-party platforms are set on those platforms and may differ. Blood samples can be collected at home free of charge, with no minimum order. For any scan or other test the doctor suggests, we tell you the price before anything is booked.

Who you will see

For most knee pain, see an orthopaedic doctor. Dr. Hitesh Bhandari (MBBS, MS (Orthopaedics)), orthopaedic surgeon with 12 years' experience, consults Monday to Saturday, 5:00 to 7:00 PM. He will examine the knee, hip and back, decide whether a scan is needed, and give you a plan you can start the same day.

If you cannot come in the evening, start with a general physician. Dr. Waquar Yunus (MBBS), our general physician, is in the clinic for the full clinic day, Monday to Saturday, 8:00 AM to 9:00 PM. He can examine the knee, arrange blood tests, and refer you to Dr. Bhandari if it needs an orthopaedic opinion.

If the pain seems to start in your lower back and run down into the leg, read our page on back pain and when to see a spine surgeon as well. Dr. Anuj Mundra (MBBS, MS (Orthopaedics), FNB (Spine Surgery)), spine surgeon with 14 years' experience, consults Monday to Saturday, 6:00 to 7:00 PM.

Wear loose trousers so the knee can be examined, and bring any X-ray or MRI you have had, with the report.

Frequently asked questions

Is knee pain after 40 always arthritis?

No. Osteoarthritis is the most common cause after about 45, but a meniscus tear, pain at the front of the kneecap, gout, or pain coming from the hip or back can all feel similar. That is why an examination matters more than a guess.

Should I rest my knee completely?

Not for long. A day or two of taking it easy during a flare is fine, but the thigh muscles that protect the knee weaken quickly without use. Gentle, regular movement usually helps more than rest.

Is walking bad for arthritic knees?

For most people, no. Regular walking on flat ground, at a pace you can manage, is one of the most useful things you can do. If a walk makes the knee worse for more than a day, shorten it rather than stop.

Does a crunching sound mean my knee is damaged?

Not on its own. Crunching or clicking without pain or swelling is very common and usually harmless. Crunching with pain, swelling, locking or giving way is worth having checked.

Will I need a knee replacement?

Most people with knee osteoarthritis never do. A replacement is considered when pain and stiffness still limit daily life after a proper trial of exercise, weight management and pain relief, and the X-ray matches the symptoms. The orthopaedic doctor will discuss it if and when it becomes relevant.

Can I come without an appointment?

Please call first and we will give you a time. Dr. Bhandari consults in the evening, so booking ahead saves a wasted trip. With any of the hospital signs above, such as a hot swollen knee with fever, go to a hospital emergency department instead.

All Is Well Medical Centre

Shop no. 1, Central Market, Sector B Rd, opposite Vasant Square Mall, Masoodpur, Sector B, Vasant Kunj, New Delhi, Delhi 110070

Clinic hours: Monday to Saturday, 8:00 AM – 9:00 PM. Closed Sunday.

Phone: 8800844793 · WhatsApp: https://wa.me/918800844793 · Book an appointment: https://alliswellmedicalcentre.com/doctors-appointments

Rated 4.9★ by patients on Google.

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Medically reviewed by Dr. Hitesh Bhandari, MBBS, MS (Orthopaedics) — orthopaedic surgeon, All Is Well Medical Centre.

This article is general information and is not a substitute for a consultation with a doctor. If you are worried about your symptoms, please see a doctor. In an emergency, call 112 or go to the nearest hospital.

Contact

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Shop no. 1, Central Market, Sector B Rd, opposite Vasant Square Mall, Masoodpur, Sector B, Vasant Kunj, New Delhi, Delhi 110070

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