What Is Knee Pain?
Knee pain is discomfort in or around the knee joint, where the thigh bone, shin bone and kneecap meet. Cartilage cushions the ends of the bones, ligaments hold the joint steady, tendons attach the thigh and shin muscles, and small fluid-filled sacs called bursae help everything glide. A problem with any one of these can cause pain, and because the knee carries your weight with every step, even a mild problem is hard to ignore.
Common Causes of Knee Pain
Knee pain can start suddenly after a twist or fall, or build slowly over months.
Knee Osteoarthritis
Over time, the cartilage that cushions the joint can wear thin, leading to pain, stiffness and swelling that often worsen with activity. It is one of the most common reasons adults develop knee pain. Read more about arthritis treatment.
Tendonitis
Irritation of the tendons around the knee, such as the patellar tendon below the kneecap, often follows running, jumping or a sudden increase in activity. See tendonitis treatment.
Bursitis
An inflamed bursa can cause tender swelling over the front of the kneecap or on the inner side of the knee, especially after kneeling or overuse.
Ligament and Cartilage Injuries
Twisting or pivoting can sprain a ligament or tear the meniscus, the rubbery cartilage inside the knee. These injuries may cause swelling, catching or a feeling that the knee could give way.
Muscle Tightness
Tight, tender knots in the thigh muscles, called trigger points, can add to aching around the knee and make movement feel stiff.
Knee Pain Symptoms
Initial Symptoms Include:
- Aching with stairs, squatting or getting up from a chair
- Stiffness first thing in the morning or after sitting
- Tenderness around the kneecap or along the joint
Over Time, Additional Symptoms Include:
- Swelling that comes and goes
- Clicking, grinding or catching
- A knee that feels weak or unstable
- Pain that interrupts sleep or limits walking
When to See a Doctor
Make an appointment if knee pain lasts more than a few weeks, keeps coming back, or stops you from walking, working or sleeping comfortably.
Seek urgent or emergency care if:
- You cannot put weight on the leg after an injury, or the knee looks deformed
- The knee is hot, red and swollen and you have a fever, which can be a sign of infection
- The knee swells quickly after a fall or twist, or locks and will not straighten
- Your calf is swollen, warm and painful, which can be a sign of a blood clot
Why Choose Dr. D’Alessio for Knee Pain
- Physician-Led Care
Dr. Donna D’Alessio is board-certified in Physical Medicine & Rehabilitation, a medical specialty focused on restoring movement and function for people with muscle, joint and nerve conditions. - A Plan Built Around the Cause
Knee pain from arthritis, a tendon or a bursa is treated differently, so the first step is finding out which one you have. - Close to Home
Our office is on Main Road in Towaco, in Montville Township, and is convenient for patients from Lincoln Park, Boonton and Parsippany.
Learn More About Dr. D’Alessio
How Dr. D’Alessio Evaluates Knee Pain
Your visit starts with a conversation: when the pain began, what you were doing, where it hurts, what makes it better or worse, and what you have already tried. Dr. D’Alessio then examines the knee, checking for swelling and tenderness and looking at range of motion, strength and stability. Because the hip and lower back can send pain into the knee, she may examine those as well. If she needs more information before recommending treatment, she will explain what and why.
Knee Pain Treatment Options in Montville, NJ
Treatment depends on the cause of your pain, your health history and your goals. Non-surgical options offered through our pain management practice include:
Joint and Bursa Injections
Ultrasound-guided joint injections place medication precisely inside the knee. A steroid injection may calm inflammation in an arthritic joint, and an ultrasound-guided bursa injection can target an inflamed bursa directly.
ORTHOVISC Hyaluronic Acid Injections
For knee osteoarthritis, ORTHOVISC® hyaluronic acid injections add a lubricating gel to the joint and may ease pain and improve movement.
PRP Joint Injections
Platelet-rich plasma (PRP) uses platelets concentrated from a small sample of your own blood. It may help relieve pain from knee arthritis and tendon problems.
Trigger Point Injections and Massage Therapy
When tight thigh muscles add to knee pain, trigger point injections and massage therapy can relieve muscle tension and may make movement easier.
What to Expect
Most injections take place during a short office visit, and many patients return to their usual routine soon afterwards. Some soreness, bruising or swelling where the needle went in is common and usually settles. You will receive aftercare instructions for your treatment, and some treatments, such as PRP, may be given as a series. Relief varies from person to person, and Dr. D’Alessio will tell you what is realistic for your knee.
Interested in Finding Out More?
If knee pain is keeping you from the walks, stairs or activities you enjoy, our team in Montville is here to help.
Frequently asked questions
What are the most common causes of knee pain in adults?
Osteoarthritis, tendon irritation, bursitis and injuries to the ligaments or cartilage are among the most common causes. Each is treated differently, so an examination is the best way to find out what is behind your pain.
What is the difference between PRP and ORTHOVISC injections?
PRP uses platelets concentrated from a small sample of your own blood. ORTHOVISC is a hyaluronic acid gel that adds lubrication to a knee with osteoarthritis. Dr. D’Alessio will explain whether either is suitable for your knee.
Do knee injections hurt?
Most patients feel only brief pressure or a pinch. Some soreness, bruising or swelling where the needle went in is common afterwards and usually settles on its own.
When is knee pain an emergency?
Get emergency care if you cannot put weight on the leg after an injury, the knee looks deformed, or the knee is hot, red and swollen and you have a fever. A swollen, painful calf also needs prompt attention, because it can be a sign of a blood clot.
How soon will my knee feel better?
It depends on the cause and the treatment. Some patients notice relief quickly, while others need a series of treatments or several weeks. Dr. D’Alessio will explain what to expect from your plan.
Related treatments
Pain Management in Montville
Pain can affect every aspect of your life, from mobility and mood to sleep and productivity.
Joint Pain Treatment in Montville NJ
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PRP Joint Injections in Montville, NJ
At Montville Medspa & Pain Center, we understand how debilitating joint pain can be.
Non-Surgical Arthritis Pain Relief in New Jersey
Arthritis is a chronic condition marked by inflammation in one or more joints, causing pain, stiffness, swelling, and limited mobility.

