Knee reviews

Dr. Ramkumar helped me repair both of my knees. The post treatment was also handled delicately with consideration for a proper recovery. I highly recommend contacting him for any future knee repair and care from my experience.

Prem N. Ramkumar, MD, MBA

I first came to see Dr. Ramkumar because I was doing heavy miles and experiencing some knee pain and hip fatigue. He quickly diagnosed that I needed a hip arthroscopy surgery that would alleviate the pain and the fatigue. He did an amazing job in surgery and I began PT the very next day. I attacked the rehab hard with his guidelines and after 3 months I’m back to running around 30 miles a week preparing for a marathon! Dr Ramkumar is so cool and has been amazing throughout the whole process. I put a lot of trust in him and he gave me a lot of confidence as well that I would be back and better. Thank you Dr Ramkumar!! Much love.

Prem N. Ramkumar, MD, MBA

I had hip arthroscopy surgery with Dr. Ramkumar at Long Beach Lakewood Orthopedic Institute, and I could not be happier with my experience. Going into surgery, I was honestly a little timid and unsure of how good or bad the whole process could be, but everything went very smoothly and my healing has been going really well. Dr. Ramkumar, his nurse practitioner, and the entire staff were amazing throughout the process. They were thorough, supportive, and always took the time to answer questions and make me feel comfortable. You can genuinely tell they care about their patients and the outcomes they achieve. I also really appreciated having physical therapy onsite because it made recovery much easier and convenient. The whole team made me feel supported every step of the way. If you are dealing with hip or knee issues and want a doctor and team that truly care, I highly recommend Dr. Ramkumar and Long Beach Lakewood Orthopedicd Institute.

Prem N. Ramkumar, MD, MBA

After my daughter injured her knee, we spent months being told she just needed rest, but she never fully healed. Once an MRI was finally ordered, we met with a local orthopedic surgeon, but the experience felt rushed and lacked compassion. That’s when I started researching other options and came across Dr. Ramkumar. From our very first appointment, we knew we had made the right decision. Dr. Ramkumar was kind, patient, informative, and never once made us feel rushed or pressured into surgery. He took the time to thoroughly explain her ACL and meniscus surgery along with the recovery process, which gave us so much reassurance during a stressful time. Her recovery has honestly exceeded anything we expected. She was off crutches at 2 weeks, out of her brace at 4 weeks, and now 4 months post-op she continues to do incredibly well with minimal to no pain. His physical therapy team has also been amazing supportive, patient, and truly invested in her recovery. We gladly make the almost 3-hour commutes because Dr. Ramkumar and his entire team have been the perfect fit for my daughter. We are beyond grateful for the care, encouragement, and support they have given her throughout this journey.

Prem N. Ramkumar, MD, MBA

I highly recommend Dr. Ramkumar as my husband had an excellent experience. The level of professionalism, knowledge, and personal attention was outstanding. Dr. Ramkumar took the time to listen carefully explain everything clearly and made us feel comfortable and confident throughout the process. The staff was also kind, efficient, and caring. It is rare to find a doctor who combines such expertise with genuine compassion. We are very grateful for the excellent care received. We would highly recommend this practice to anyone needing expert orthopedic knee care.

Prem N. Ramkumar, MD, MBA

Dr. Ramkumar is the most extraordinary human being, doctor, and surgeon I have ever met. He is kind and hopeful while also being practical and honest. I went to four so-called specialists with a complex ACL and cartilage injury after enduring two previously failed surgeries at Cedars and USC. I thought I would never return to soccer and running again after previous opinions told me it was basically impossible. Well, two years later I'm playing collegiate soccer and couldn't be happier after a revision ACL and cartilage transplant. I wish I just went to him in the first place instead of wasting years trying to rehab a knee that never felt right and wasn't done properly. He called me the night before surgery just to tell me "I got you" and to make sure I understood the plan for the next day, the next 2 weeks, the next 9 months, and the next 10 years. He understood me and my goals and treated me as a family member and gave me world class care. I consider myself lucky to be his patient and to know him. Thank you Dr. Ramkumar!

Prem N. Ramkumar, MD, MBA

I was “bone on bone“ in both of my knees and had been to see 3 different knee specialists over the past 10 yrs. Dr. Ramkumar was the first and only one of the three to tell me that a partial knee replacement was even an option. It was what he recommended, and he backed it up with my x-rays and a clear explanation as to why a partial vs. a full was the clear way to go. Besides his phenomenal surgical expertise, one of the things I really appreciated about Dr. R is that he “got me“. I’m on the chronologically gifted side of things (71YO), but he took the time to understand how active a lifestyle I led, and the things I wanted to be able to keep doing after surgery, i.e. motocross ride, snow ski, pickleball, golf, hike and last but not least - play with our 7 grandkids! I worked out for 2 1/2 months prior to surgery to get my legs in the best possible shape and to help with recovery. Post surgery results have FAR exceeded my expectations. I know every patient will be different, but I have not experienced the pain level I anticipated. As of this writing, I’m 2 1/2 weeks post surgery and have only had to take two pain pills, and I walked 3.1 miles the day after surgery. We went to Disneyland with some friends a week and a day after surgery and walked from 9am-10:30pm. I was tired at the end but no knee pain following either walk! I would highly encourage anyone to pay Dr. R a visit, especially if you’ve already been told you need a full knee replacement. That’s nothing to mess with, and a second opinion could be very helpful in making an informed and wise decision.

Prem N. Ramkumar, MD, MBA

Bilateral partial knee replacement surgery on Feb 10, 2026, walking almost immediately and back road cycling 8 weeks later. The recovery has been very consistent and fast. I cannot say enough good things about Dr. Ramkumar and his team. The procedure and recovery feels like a paradigm shift in this field.

Prem N. Ramkumar, MD, MBA

Dr. Millstein saw me on time, was thorough in his examination of my troublesome knee and offered suggestions for how to mitigate my pain. He also said that if I didn't find adequate relief, he would approve an MRI should I want one.

Eric S. Millstein, MD

Dr. Ramkumar did an excellent job on my knee a true professional. I strongly recommend him and his team. I'm recovering well!

Prem N. Ramkumar, MD, MBA

The office is lovely and well organized. Dr. Millstein is an excellent orthopedist and gave me a cortisone injection in my knee. I appreciate his honest, frank style.

Eric S. Millstein, MD

Dr. Ramkumar has been one of the best experiences I could have asked for. I had a complex lateral knee injury that many doctors before misdiagnosed. Dr. Ramkumar was extremely honest, focused, and not rushed to surgery, in fact he was able in a few months get me back to normal without surgery, when many doctors prior said that surgery was necessary. He was very honest, no sugarcoating the truth, which to me is preferred when you have to make tough decisions. He was extremely knowledgeable and was able to explain the injury in a way that I couldn’t understand and feel confident in my decision making. This quality is very important when dealing with complex injuries where most average people do not understand the healing process and what you can and can’t do. I couldn’t be more grateful for him and the team putting such care into doing everything they could to heal my knee before rushing into surgery. I was concerned because this injury was quite unique I was worried I would t be able to find the right guy, but luckily I was able to get time with Dr. Ramkumar.

Prem N. Ramkumar, MD, MBA

Was impressed firstly by the number of X-rays that were taken by the very efficient technician and then, the amount of detail the doctor had to work with. Her reasoned Interpretation of all images resulted in a very clear path to treatment for my pain concerns. Lastly, the cortisone shot she gave me in the knee was so unexpectedly successful, I woke up the next morning with no perceptible pain in that area. Now, I wish I had been offered same shot in both shoulders before starting physical therapy this week. All in all. a most throughly positive treatment with immediate positive results.

Allyson Estess, MD

I was referred to Dr. Ramkumar after having suffered a major injury to my left knee. I received a partial knee replacement and honestly could not be happier. Until seeing Dr. Ramkumar I had no idea that partial knee replacements were even available. The entire process pre/post surgery was so seamless and efficient. I felt so comfortable with the care that I received. Dr. Ramkumar is not only professional and knowledgeable in his field but he is also kind and compassionate in his delivery of care. I would definitely recommend Dr. Ramkumar, his team and entire staff as they are absolutely incredible.

Prem N. Ramkumar, MD, MBA

Two years ago, I had a partial knee replacement by Dr. Ramkumar. Prior to the surgery I was seen at both of his offices in Long Beach and Lakewood for the initial consultations, x-rays, surgery preparation, etc. His office staff were professional and friendly. The day of the surgery, I was scheduled to arrive at 5AM, may be earlier, I was a little intimidated by the looks of the surgery building (had never been to à “surgery building”, I mean the building is nice but it’s specifically dedicated to surgeries-meat chopping room 😳). My amazing doctor comes in and immediately makes me feel comfortable. He is young, BUT he is skilled, experienced and he is the best at what he does. I have heard horrible stories about knee replacements, but after my own surgery I highly recomend that you get yourself out of misery and get your knee replacement done. And if you choose Dr Ramkumar you will not be disappointed.

Prem N. Ramkumar, MD, MBA

Dr. Ramkumar and his staff are truly the best! Going into my first appointment, I already knew I had a torn meniscus. However, after a simple X‑ray, Dr. Ramkumar immediately noticed that my ACL and knee alignment didn’t look right. It turned out that my previous ACL graft from eight years ago was not properly working anymore. Hearing that I needed an ACL reconstruction along with a meniscus repair was overwhelming, but the way Dr. Ramkumar explained everything—what happened, how he would fix it, and why gave me complete confidence that I was in the best hands. I was genuinely excited for surgery because I trusted him completely and knew he would be able to fix my knee so I could begin my journey back to lifting weights and swimming again. After surgery, I felt stronger than I ever have after a procedure. I was walking without crutches around two weeks post‑op. Dr. Ramkumar provides a clear, easy‑to‑follow post‑op plan so patients know exactly what to expect and how to track their progress. I’ve also spoken with other patients in the waiting room, and it’s clear he has helped so many people become pain‑free—from knee replacements to ACL repairs like mine, including both medial and lateral meniscus repairs. Now, three months post‑surgery, I can confidently say I am beyond grateful for my decision to walk into Dr. Ramkumar’s office for help with my knee pain. Dr. Ramkumar and his entire staff are incredibly kind, patient, and always willing to answer any questions. They make every office visit enjoyable because they’re such a warm and welcoming team. Ms. Stephanie was amazing to work with. She helped me plan my surgery date and made sure I had everything I needed leading up to the procedure. Ishan was also extremely helpful he answered all my questions and helped set up the post‑surgery app so they can track how their patients are doing. Overall, such a supportive and organized team! I would HIGHLY recommend Dr. Ramkumar and his staff to anyone needing hip, knee, or ACL surgery. He is truly the best, and I can’t wait for my next appointment! GOATED staff !! Thank you all so much!!

Prem N. Ramkumar, MD, MBA

An excellent and caring doctor. He was my surgeon for one knee which is now in great form. Then recent problems with the other knee were determined not to need surgery. He is very observant and clearly loves his job. Also, the staff seems happy...always a good sign.

Eric S. Millstein, MD

On behalf of my Dad /Hector Valdez- Dr Ramkumar did an awesome job. He did his left knee robotic replacement surgery. It was a success and the recovery, care, follow up has been with so much care. We are now scheduling the 2nd knee surgery this summer and confident of the same outcome due to his excellent expertise and his caring team. Highly recommended.

Prem N. Ramkumar, MD, MBA

Dr. Ramkumar performed my ACL reconstruction and meniscus repair, and I couldn’t be more grateful for the care I received. He was professional, thorough, and took the time to clearly explain the procedure, recovery timeline, and what to expect long term. The surgery went smoothly, and my recovery has been better than I expected. He also created his own week-by-week recovery guide outlining what to expect and what needed to be done at each stage, which helped me tremendously throughout the process. I’m now 3 months post-op and already feeling like I can run again, which speaks to the quality of his work and guidance throughout recovery. What I appreciate most is his focus on long-term stability and protecting the health of my knee for years to come. I highly recommend Dr. Ramkumar to anyone needing knee surgery.

Prem N. Ramkumar, MD, MBA

A professional when it comes to knees. 5-star.

Prem N. Ramkumar, MD, MBA

Dr. Ramkumar has been the best doctor I have ever had the opportunity to see. Let me rewind a bit. I had a serious soccer accident when I was 16 that resulted in hip surgery at 17. At the time, I thought I was good to go. Unfortunately, my body had other plans. I only had about two pain-free years before the hip pain returned, and over the next 8–9 years it slowly got worse. What started as hip pain turned into back pain, knee pain, sciatica—you name it. I tried everything: physical therapy after physical therapy, aqua therapy, doctor after doctor. Every test came back “normal,” and no one could tell me what was wrong. It felt like either no one was looking hard enough, or no one truly understood what I was dealing with. That all changed when I met Dr. Ramkumar. At my very first appointment, he took new X-rays, looked at them once, and immediately knew what was wrong. For the first time, I finally had answers. Even more importantly, he took the time—despite his busy schedule—to sit with me and explain everything in a way I could truly understand. He is incredibly personable and never talks down to you like some doctors do. You can genuinely tell that he cares about helping you get your life back from chronic pain. I was understandably nervous about going through surgery again, but between Dr. Ramkumar and his amazing staff, I felt confident moving forward. And let me tell you—it was life-changing. I finally feel free from the pain that haunted me for so many years. I only wish I had found his office sooner. Every single staff member, from the PAs to the front office team, is kind, welcoming, and treats you like family. They make you feel heard, comfortable, and supported—qualities that are sadly rare in medical settings, in my experience. I am beyond grateful for the care Dr. Ramkumar and his team have provided, and I wholeheartedly recommend him to anyone who is sick and tired of living in pain.

Prem N. Ramkumar, MD, MBA

Dr. Ramkumar and his team (shoutout to Margo & Ishan) have been consistently superb throughout the entire process of helping me recovery from my injury (comprised of: ACL tear, lateral meniscus tear, & MCL sprain), which isn’t a surprise because even when I first met them I immediately knew that I was in good hands. Him and his team are so responsive (I always receive a response either in the same day or the next day) that I wonder when they find the time to sleep. Dr. Ramkumar’s knowledge is both expansive and current. So much so, that he used Cameron brink’s surgery as an example when he was telling me about the LET procedure. My dad tore his ACL twice, and neither of his surgeons ever mentioned the LET procedure in tandem with the ACL repair. So Dr. Ramkumar enlightened both my dad and me on its history and results. As an athlete who misses playing volleyball dearly, I’m so happy and blessed to have him in my care team because he has a track record of treating other athletes as well. The day of my surgery was quick and smooth. Dr. Ramkumar met with me before I was put under to go over everything again, and did so again when I woke up after the surgery as well to make sure the brace was properly fitted and that I had all the instructions/paperwork. I had minimal pain after surgery, and I was even able to bend my knee to 90 degrees the DAY AFTER surgery (90 degrees was my two week goal)!! TL;DR I’ve had the BEST experience I could ever hope for because of Dr. Ramkumar and his AMAZING team ✨❤️ (The picture attached is from my post-op appointment on Halloween lol, they are always VERY professional otherwise)

Prem N. Ramkumar, MD, MBA

If you are an athlete or you have an athlete child, this review is for you. It can be the craziest experience when your kid gets injured. On top of all the emotions there's the inescapable reality of "what next" When the dust settles, the MRIs are back, and the reality of surgery becomes inevitable an even more important question looms: "Where can I get the best possible care?" My daughter received the best possible care with Dr Ramkumar and he's the answer. I strongly feel that if my daughter (elite level high school wrestler) had her primary ACL surgery done by Dr Ram to begin with, she likely would have never needed the ACL revision surgery that brought us to Dr Ram. Being traumatized by the last experience I knew this time around that I needed to find someone young,  someone with modern ideas and applications,  new-school and capable, works with athletes and understands those demands, and someone who specializes in knees day in and day out. With athletes,  the timeline is crucial. Within one day of my girl's re-injury my friend reached out to Dr Ramkumar's NP with a Homie Hookup request and by 10 pm that same night Dr Ram had personally reached out to me by email and said verbatim, "I will see you soon and fix this problem. Happy to help...I can see you before the MRI" Please tell me what doctor on planet earth takes their own time to reach out after hours and is like 'hey don't worry I'm gonna fix your kid?' That's incredible. I looked into him at that point and his qualifications are ridiculously excellent. Like okay Overachiever, leave some accolades for the rest of the people. But that's exactly what we needed. Within 3 weeks of her injury date she was on his operating table. He decided to do this so that she could be ready for the next wrestling season. He had spoken to her personally about her goals and that led him to help us push through red tape to get this done ASAP. His beside manner for a surgeon is pretty impeccable. But here's the craziest part. Her surgery randomly ended up getting pushed for many hours at the surgical center that day.  He could've canceled her but instead he honored his word and did the surgery which started at like 9 pm! He even called me from the OR to explain how he was needing to go in and fix some things from her previous surgery, that's why it was taking a little longer and basically not to worry. I felt so in the loop and like she was truly in the best hands.  He did ACL revision,  LET, and stem cell therapy on her and he closed her up w the most dainty and technical stitching. Like he's basically a skin tailor, tffff The above is all a testament to his work ethic and his clear commitment to his own high standards of excellence. Now she's going on 2 months post-op, acute recovery was smooth and easy, Dr R and the PTs are all really happy with where she is and she could not have done this without Dr Ramkumar. He went above and beyond to deliver his best work. I hope you never need ACL repair but if you do there is nobody better in California to get in front of than this guy and his AWESOME NP, Margo! Boom! (I don't have any pics of them together but in PT she's a beast BECAUSE of his work!)

Prem N. Ramkumar, MD, MBA

This is Carmelita A Davis and I would like to say Dr. Ramkumar is a Phenomenal doctor. He takes care of his patience. He make sure that you understand what’s going on. He also does follow up calls to make sure that everything is working properly after surgery and that you are at a comfort space if anyone is needing knee surgery please be encouraged To not hesitate to become a patient he’s a beautiful person inside and out. I had total knee replacement it’s been seven months now on the left knee and I’m doing very very well Under his care God be with you and The work that you do take care Dr. Ramkumar Blessings be with you and your family.

Prem N. Ramkumar, MD, MBA