Knee Replacement Surgery

Everyone experiences knee pain from time to time. But if the pain is severe, impacting your daily life, or accompanied by swelling, tenderness or redness, it’s time to see a doctor.

At Complete Orthopedics, our team of orthopedic knee doctors specialize in knee pain treatment and surgery. We can discuss your symptoms, diagnose the problem, and provide you with the best course of action for knee treatment or surgical repair.

Based in New York City and Long Island with operating privileges in six hospitals, we’re fully equipped to provide state-of-the-art knee surgery and orthopedic services. If you’d like to make an appointment with an orthopedic surgeon, you can book online or give us a call today.

Here’s a look at some of the common causes and treatments for knee pain and when surgical repair is the best option.


Knee pain appears in many forms, ranging from swelling and stiffness to popping and crunching noises. Sometimes the pain feels like weakness or instability. In certain cases, there is redness, and the knee is warm to the touch.

Many different problems can cause knee pain. The most debilitating cause involves underlying medical conditions, such as osteoarthritis, which can lead to disability if left untreated.

Knee Pain Symptoms

X-ray showing knee anatomy.

X-ray showing knee anatomy.

Knee pain can cause many different sensations, depending on what’s triggering the symptom.
Here are some of the common signs and symptoms of knee pain:

  • Constant ache
  • Sharp, shooting pain
  • Dull burning pain
  • Stiffness and swelling of the knee
  • Warm to the touch
  • Redness
  • Instability or weakness
  • Crunching or popping noises
  • Unable to straighten your knee
  • Unable to bend the knee

When to call Complete Orthopedics

Call your orthopedic knee doctor if you are experiencing:

  • Major pain after an injury
  • Severe pain in the knee
  • Marked knee swelling
  • Pain builds over hours and is associated with swelling, tenderness or redness
  • Inability to bear weight on your knee
  • Fever, along with redness, pain and swelling in the knee
  • Deformity in your knee or leg

Causes of Knee Pain

There are many different causes for knee pain, ranging from sports injuries and arthritis to excess weight.

Knee Pain Caused by Sports Injuries and Accidents

Accidents happen in sports and in everyday life. Here’s a list of the most common knee injuries that can occur from sports injuries and other accidents.

ACL Injury
ACL stands for the anterior cruciate ligament, one of four major ligaments in the knee joint. Located in the middle of the knee, the ACL is responsible for stabilizing the knee and preventing the sliding of the tibia under the femur.

An ACL injury is one of the most common sports injuries in athletes who play sports that involve sudden changes in direction. Soccer players and basketball players often need knee surgery due to an ACL injury.

It’s possible to break the bones of the knee (including the kneecap) in an injury, such as a car crash, a fall, or a sports injury. It’s also possible to break knee bones as a result of osteoporosis.

Knee Bursitis
Sometimes knee pain is caused by inflammation in the bursae, fluid-like sacs in the knee that help the tendons and ligaments glide smoothly over the joint. A wide variety of injuries can cause this type of inflammation in the knee.

Patellar Tendinitis
Patellar tendinitis is irritation and inflammation in the patellar tendon that connects the shinbone to the quadriceps muscle on the front of the thigh. This type of knee injury is common in cyclists, runners, and skiers. We also see patellar tendinitis occur in athletes involved in jumping sports.

Torn Meniscus
It’s possible to tear your meniscus if you suddenly twist your knee. The meniscus is a piece of cartilage that helps to absorb shock inside the joint.

Knee Pain from Mechanical Issues

Sometimes simply moving the wrong way can cause an injury to the knee. Here are some of the mechanical issues associated with knee pain:

Dislocated Kneecap
It’s very painful to dislocate a kneecap. This happens when the patella, a triangular bone that covers the front of your knee, comes out of place. Most often, the bone slides to the outside of your knee. It’s common to see a dislocated kneecap.

Foot or Hip Pain
In some cases, you can experience knee pain due to foot or hip pain that makes you walk differently to avoid pain in those areas. Unfortunately, this change in the way you walk might add more stress to your knee and cause pain.

Iliotibial Band Syndrome
Iliotibial band syndrome happens to distance runners and cyclists. It happens when the iliotibial band, the band of tissue from the outside of your knee to the outside of your hip, tightens and rubs against the outside of your femur.

Loose Body
In some cases, a piece of cartilage or bone can break off and float into the knee joint where it causes pain.

Arthritis-related Knee Pain

A lot of time, knee pain is caused by arthritis. There are different types of arthritis that can cause knee pain. Here are the most common:

Gout is a type of arthritis that can cause pain in the knees. It is the result of high levels of uric acid that forms sharp crystals. These crystals can cause pain along with swelling and tenderness.

Another type of arthritis that affects the knee is osteoarthritis. While initial symptoms might be mild, eventually osteoarthritis can cause severe knee pain that requires knee surgery.

The joint that is most commonly affected by pseudogout is the knee. This type of arthritis causes sudden, painful swelling in the knee.

Rheumatoid arthritis
Rheumatoid arthritis affects your joints, including the knee joint. It causes pain, stiffness, and swelling that can have a negative impact on your daily life. Knee surgery might be an option for people who want to reduce joint pain and improve their daily life.

Septic arthritis
The knees are one of the most commonly affected joints in septic arthritis. This type of arthritis is an infection in the joint that causes a lot of pain. It has the ability to cause damage to the cartilage and bone inside of the joint, which makes prompt diagnoses and knee pain treatment very important.

Additional Problems with Knee Pain

In addition to injuries, mechanical problems, and arthritis-related knee pain, there are other reasons you might be experiencing pain in your knees.
Factors such as excess weight, lack of muscle strength, and previous injuries can all increase your risk of having knee issues and pain.


If you are experiencing knee pain, it’s important to listen to your body and have a healthcare provider check your symptoms.
At Complete Orthropedics, our orthopedic knee doctors provide consultation and diagnoses of common issues that cause knee pain. In most cases, we’re able to diagnose your case in the office during your first visit.

The Process
We conduct a formal history and physical examination. During the exam, we have a thorough discussion with you about your knee pain, its duration, characteristics and exacerbating or alleviating factors. We also check your knee for visible symptoms, check how far you can move your leg, and push or pull on the joints to see the integrity of the knee.

Next, we conduct any related tests that apply to your situation, including x-rays. If we’re still unable to diagnose your problem, we can then order additional tests such as a CT or MRI scans.

Treatment and Surgery

Your knee pain treatment will depend on your diagnosis. There are many non-surgical treatments for knee pain, including physical therapy, injections, as well as home remedies and alternative medicine options.

Disclaimer – The above video content is external and shows the opinion of the involved vendor.

However, in some cases, you may require a knee operation to treat your knee pain. If you require knee surgery, we can help you decide whether you need to have the surgery right away or at a time that best meets your needs.
Some of the most common surgeries associated with knee pain repair include:

  1. ACL surgery
  2. Arthroscopic surgery
  3. Partial knee replacement surgery
  4. Total knee replacement surgery

1. ACL Surgery

We offer ACL surgery for people who have experienced an ACL injury. In many cases, knee surgery on young patients with high activity levels that help them to return to their normal life or preinjury activity level and lifestyle.

2. Arthroscopic Surgery

We provide arthroscopic surgery for knee pain. Depending on your diagnosis, we might repair your knee using a fiber-optic camera and long, narrow tools. Using this method, we can reconstruct torn ligaments, remove loose bodies, and remove or repair damaged cartilage.

3. Partial Knee Replacement Surgery

In some cases, you might require a partial knee replacement surgery. In this type of surgery, we replace only the damaged part of your knee and replace it with new parts made of metal and plastic. This relatively minor surgery is done through small incisions and has a faster recovery time than a total knee replacement.

4. Total Knee Replacement Surgery

If you require a total knee replacement, rest assured you’re in good hands with the surgeons at Complete Orthopedics. This is our most common procedure. In this knee operation, we replace the damaged parts of the knee joint with metal and plastic parts.

Femoral Component (Posterior Stabilized)

Femoral Component (Posterior Stabilized)

Tibial Component

Tibial Component

The metal parts are made of cobalt chromium alloy. The femoral component replaces the lower end of the femur and requires making special cuts on the bone for the prosthetic implant to fit snugly. The above image shows a posterior stabilized femoral component which requires sacrifice of the posterior cruciate ligament. The ligament function is reproduced by the polyethylene insert  which fits in the tibial component in the image above. Together the parts reduplicate the function of the normal knee.

Modular posterior stabilized femoral component

Femur stem for modular femoral component

The modular components are used in revision knee replacement and complex knee replacement surgery. The components allow the surgeon to make intraoperative changes to achieve greater stability according to the patient’s anatomy and bone loss. The stem attaches to the upper part of the modular femoral component. While the femoral component is cemented to the lower part of the thigh bone, the stem is not cemented.

Modular tibial component with bone augments

Tibial stem for modular tibial component

The above images show modular tibial component along with bone augments. The bone augments are used to fill in the bone gaps encountered during surgery. The stem helps to stabilize the tibial component in the shin bone.


Your recovery plan will depend on the type of surgery that you receive.
Our website is rich with surgery recovery guides based on the type of surgery.
Total knee replacement recovery guide
Recovery time for Tibial Osteotomy
We also have several FAQs pages on knee surgeries and treatments.

Complete Orthopedics Knee Surgery and Recovery

Whether it’s the result of a sports injury or a medical condition, knee pain is your body’s way of telling you something’s wrong. While minor pains can be treated with self-care measures, it’s important to know why you’re experiencing the pain in the first place to prevent long-term damage.

At Complete Orthopedics, we take knee surgery and recovery very seriously. Along with professional surgery and knee treatment, we provide you with the knowledge and self-care tips you’ll need to go through a successful recovery process.
Give us a call today or schedule an appointment online.

Call Us Now!

Based on 115 reviews
Dr. Karlkare and his staff were excellent. Dr. Karkare explained everything clearly and took his time getting to know my Dad.
Anna Acker
22:46 07 Sep 23
Dr Vedant Vaksha had done emergency surgery in 2020 after a traumatic injury.His office at Complete Orthopedics handled the continued care thereafter.Dr V and his staff had been Professional and friendly throughout the process, taking the time to explain all the questions on how to proceed and what to expect.Whenever I needed to speak with Dr V or the office they were a phone call away, without waiting or calling several numbers like in so many other medical offices.The office was accommodating to scheduling to my needs at all times. Dr Vedant Vaksha earned the following5 out of 5 stars, highly recommended.
John Kuey
20:58 05 Sep 23
Dr. Vaksha helped me recover from an injury. I am very thankful that he took the time to explain the best treatment for my injury. Also thankful for the wonderful office staff!
Joseph Castelli
22:30 02 Aug 23
The office is wonderful!… Dr Paresh was very helpful and attentive and made my sister in laws recovery so much better.. Thank you for everything
Jazz Lorenzo
17:48 14 Jul 23
The ladies are very welcoming, the service is great, the doctor is very professional and caring and the building is super clean. I really like to come here, the atmosphere is very friendly... Come and you will love it too.
Joan Carasco
14:41 30 Jun 23
Dr. Nakul Karkare is awesome! And patriotic! Thank you, Dr. Karkare for displaying the American Flag in your waiting room, honoring and mourning our military personnel, this Memorial Day, who died while serving in the United States Armed Forces.
00:52 30 May 23
Excellent and skilled orthopedic practice specializing in joint replacements. Dr Karkare was trained at the Hospital for Special Surgery and has excellent results, as do his associates!! Would gladly refer family members to the practice!!
00:24 30 May 23
I had such a wonderful experience with Complete Orthopedics in Stony Brook. Not only did Dr. Kuo fix my broken wrist with such kindness and care, but the office staff, including Billing, Reception and the X-Ray Technician, was always so helpful, going out of their way to ensure that each patient felt welcome, answering any questions with a smile, and ensuring any issues with insurance/billing were handled with the utmost professionalism. I highly recommend their practice!
Victoria DeMatteo
19:49 10 May 23
I'm very happy St. Catherine's sent me to this office for treatment after I broke my collar bone! Unfortunately the break was too severe to repair on its own and I had to have it rebuilt a week after the injury. Dr. Vaksha did a great job fixing it. I'm three months out, and I have full use of the arm and shoulder. The whole office staff is very professional, accommodating, and welcoming. I hope to not need orthopedic services again, but Dr. Vaksha will be my number one choice if I or anyone in family suffers such am injury.
Tina Rivera
20:42 08 May 23
No one likes going to the doctor. But these people make it painless. I go for knees, hips and shoulders. At almost 70 Complete Orthopedics keeps my active life style running smoothly. Whether chasing my Grandson and even surfing again, I highly recommend them!!
Thomas Slavin
15:02 02 Mar 23
Dr. Kuo knowledgeable and competent surgeon- very good experience and more importantly great result.
Joseph McCoy
21:23 25 Feb 23
Dr Vaksha was so kind and helpful. He took extra time with us and explained things so thoroughly. Highly recommend. Office very clean.
Susan Bosinius
20:20 19 Feb 23
Dr Vaksha, is a great doctor very professional knows what he talking about. Treat patient with upmost respect. Thank You
Troy Spencer
16:46 19 Jan 23
Dr. Karkare is an amazing doctor, very caring and attentive, the girl at the front desk is very kind and helpful. .elizabeth .thank you so much .
blanca ventura
21:32 26 Oct 22
Been going to this place before my accident and after I had my knee surgery. So happy how I been treated and how well I am getting. Thank you all and specially Dr. VAKSHA for everything and getting back on track.
Ita Opico
19:01 25 Oct 22
Love this place From the minute I called I was treated kindly. When I arrived The Dr saw me right away he was compassionate and ordered the appropriate tests for me. I came back in for my follow up and had the same great experience.
Christine Rostock
21:28 23 May 22
Dr Vaksha and Dr karkare are 2 of the best orthopedic doctors around my wife Susan had a very serious broken ankle in March of 2019 she didn't think she was going to walk again Dr vaksha did an excellent surgery on her ankle he said it was his toughest he ever did he put a lot of hardware in her ankle and told her she would be alright she made remarkable recovery thanks to his surgery as of now she regained 100 percent use of her ankle she would highly recommend him to anyone. My own experience with Dr karkare has been wonderful he takes his time with you listens to what you have to say and prescribes various treatments and is very caring I would highly recommend him to anyone I would give both doctors a 10 plus rating we are very happy with them the best.
Harry Jones
23:31 19 May 22
Complete orthopedics is a wonderful place to go when you hurt or injured a great staff and wonderful doctors very knowledgeable and helpful I would recommend this place to all of my family and friends that is in me of orthopedic care I give them 10 thumbs up
Wayne Pemberton
17:39 18 May 22
The staff is very professional and helpful. Dr. Vaksha is excellent. He takes time to listen and offer suggestions to help you get better. I’m very thankful and happy to be a patient here at Complete Orthopedics.
Phoenix Rising
19:54 16 May 22
Dr.Karkare is the best. He listens to everything and explains everything I recommend him to everyone. I am so happy he is my doctor.
Myrna James
00:48 13 May 22
Dr.Kuo is amazing very attentive,caring,and passionate and staff is awsome too.Thank you for everything Dr.kuo.
Erick Murillo
23:17 12 May 22
I was in a car accident November 1 I was referred to Dr. Vaksha For shoulder surgery . I he was amazing he made me feel very comfortable and explained everything that was going to happen from surgery all the way through my physical therapy highly recommend Dr. Vaksha
Yolanda Ojeda
19:37 09 May 22
My appointment with Dr. Vaksha was amazing. Dr. Vaksha was very thorough and kind. I would refer this office to anyone who needs a great orthopedic doctor.
John Senechal
19:54 05 May 22
Scheduling my appointment was quick and easy. The staff was super friendly and down to earth. I was seen on time. The appropriate test, “x-rays” were taken before the conversation with doctor, something I really liked, test for analysis and conversation was done upfront. Dr. V had a great personality and was no BS, straight forward diagnosis and a play on next steps. I am happy I found them and would refer them to friends and family.
00:46 03 May 22
I have seen Dr. Kuo two times already and he's awesome along with his staff. Very friendly office and I'm glad to be a patient here.
Camaris A
20:01 28 Apr 22
Amazing team!! Very caring, profesional, and friendly!! Dr. Kevin Kuo, you are the best, very passionate, caring, and helping thank you for getting me better and being so kind to me! Elizabeth you the best thank you for you help always and you big smile and positive actitud❤️🙏🏼
breidy valerio
19:01 22 Apr 22
The staff is truly exceptional, they make you feel comfortable and welcomed. The doctors are amazing,always professional, compassionate and great listeners.
Elizabeth Collado
03:25 09 Apr 22
What a great place! The place is clean and organized.The staff is wonderful. Setting up physical therapy is right there as well.I'm so glad I found this place.
Donna Anne
22:45 05 Apr 22
This was my 1st time breaking something in my 27 years on this planet. I was recommended here by a friend Dr. Vashka helped me from day 1 and still continues to check in on me and my healing ankle. Would highly recommend
tyron davis
16:06 01 Apr 22
Brand new office, same great doctors! Rooms are clean, plenty of parking, physical therapy attached, Dr. Karkare and his staff are awesome. Thank you!
Emily B
02:49 24 Mar 22
Dr.VAksha is the best, I love the way he treats me as his patient, he is caring,understanding and very attentive to my needs
Mirna Caballero
14:53 03 Mar 22
Great staff. Dr. Vaksha is awesome and takes the time to listen to his patients. He is very compassionate. I would highly recommend this office.
Bebe Doyle
01:24 23 Feb 22
After suffering from a severe ankle injury Dr. V was able to help me heal and return back to work completely to a job where I stand for 12 hours a day. The office is very clean and I appreciated the reminders of my appointments via phone call and through text. The patient portal made it easy for me to access all my documents including work notes. The office staff is wonderful and Rebecca was able to schedule me with a busy schedule and awesome at answering all of my questions including referring me to a great physical therapy office. I highly recommend this office to anyone who’s looking for knowledgeable and kind orthopedic office.
Elizabeth Birchwell
21:31 28 Jan 21
The staff here are great, I was seen at the time of my appointment and was well taken care of!
Shaun Berry
18:14 07 Jan 21
They are an excellent practice. The front and back office people are amazing and so helpful. Rebecca is such a kind and understanding person. I had an issue with paperwork and she cleared it right up. Dr. Karkare is very knowledgeable, helpful, and caring.
Matt S.
19:31 18 Nov 20
Rebecca K. - What a true burst of sunshine. Very friendly and definitely an asset to the practice!
Laura Aston
18:17 17 Nov 20
Great experience, the Doctor is nice but the staff is incredible. I worked with Linda, who was profession and assisted me beyond what any person has done at other practices. Complete Ortho should be complimented for having such a person on their staff.I highly recommend this place!!!
Joe Allen
17:26 17 Nov 20
Linda and Becca they are so good ever time I come they are very nice I would tell everyone I no to come to this office..
Barbara Victor
16:45 17 Nov 20
I was rear ended in an auto accident , Dr Vashka was recommended by a friend of mine .I was experiencing Back , neck , and shoulder pain . After a thorough examination and given exercises to do at home , I am feeling much better , and I ended up avoiding surgery . The staff at Complete Ortho is extremely attentive and show great care when making an appointment and are very friendly and i never waited more than 5 minutes for my appointment . So I would strongly recommend Complete Orthopedics for any aches and pains that one might be experiencing.....
Bill Becht
04:44 17 Nov 20
It was the afternoon of Friday Sept. 24. We were in Pt. Jefferson and my wife, Mary Ann, broke her hip. We went to Mather Hospital and it was determined that she would have to have an operation to have it repaired. This would be her third time under the knife in the past year. It just so happened that we were very fortunate enough to have Dr. Karkare, who was on standby, perform the surgery. He put in a rod and two screws in her hip. She spent a few days in the hospital and then went to Gurwin rehabilitee for another few weeks.It has now been almost six weeks and we both worked the election the other day. If it wasn’t for Dr. Karkare’s expertise she never would have been able to work. She is able to walk with a walker and is doing physical therapy three times a week.We can not thank the doctor enough for the compassion and dedication that he puts into his work. It allows Mary Ann do the things that she likes to do, even on a limited basis for a while. I know that with her will, perseverance and the great work that the surgeon performed she will be back on her feet in no time.Sincerely:John V. PlumpEast Northport, NY 11731
Jack Harris
14:36 06 Nov 20
In the year of 2018 I was referred to Dr. Karkare because I was experiencing severe knee joint pain. After exhausting physical therapy and trying to labor through the pain, I had to make a quality of life decision. Total knee replacement was the only viable option. Dr. Karkare made my decision easy as he walked me through the whole process from surgery to recovery.On 12/13/19 ( Friday the 13th) I enter Lenox Hill Hospital in great hands. From the time I entered Dr. Karkare’s office for the first time until now, his staff has been amazing. Andrea the medical coordinator walked me through all the paper work and necessary preparations for the surgery. Courtesy and kind would be an understatement. Dr. Karkare went over and beyond from the wellness checks and phone calls all to assure me that I was important to him. This was the right decision no pain and no limp. Complete Orthopedics should be your choice!
Kenneth Randolph
22:18 25 Sep 20
Dr. Vadshka has a great bedside manner. He really takes his time and explains treatment options.
T Lee
12:33 09 Sep 20
I suffered with pain in both knees for years. My orthopedic doctor kept recommending knee replacement . I fought it for years, as I was just afraid. When I had no choice and could barely walk , it was recommended I see Dr. Karkare. We set up a consultation and my wife and I left his office feeling totally confident and comfortable with moving ahead with the surgery. He explained everything to us, and the office staff set everything up for us and made the process easy. So about one month after our initial meeting I had the first knee done. I was up walking mere hours after the surgery, and on the workout machines the next morning. I went home two days after the surgery, and yes walked my daughter down the aisle at her wedding only one week after the surgery without even a cane! Three months later I had the other knee done and went home the very next day. Dr. Karkare put my fears to rest . I would highly recommend him. His expertise gave me my life back. Thank you Dr. Karkare.SincerelyVito Congro
Ethel Congo
23:58 12 Aug 20
Dr Rhodin really cares for his patients. When I see him he makes sure to review my progress in detail.
Micki Cahill
15:03 08 Feb 20
My mom had a total hip replacement by dr karkare. He is the BEST orthopedic doctor.Her incision is almost invisable.She is going back for her other hip next week. The office staff is the best, love Andrea.You wont find a better doctor.
21:06 13 Jul 18
There is no better Orthopedic doctor you will find. Broke my ankle three places on a Saturday. Called Dr. Karkare. He had is team ready at the hospital and operated on me within 6 hours after my injury. Now After 3 months of great care by him and his staff, I am walking to normalcy.
Spacecom Tel
04:13 23 Mar 18

I am fellowship trained in joint replacement surgery, metabolic bone disorders, sports medicine and trauma. I specialize in total hip and knee replacements, and I have personally written most of the content on this page.

You can see my full CV at my profile page.