Knee
6 questions before partial or total knee replacement
The choice depends on which parts of your knee are affected and whether the remaining joint can support the result.
Read the guidePartial knee replacement · Patient experiences
Prem N. Ramkumar, MD, MBA.
Partial knee replacement reviews.
10 five-star reviews for Dr. Prem N. Ramkumar discuss partial knee replacement. Patients describe Dr. Ramkumar as great. Their stories also speak to compassionate care and professional care. Read their words, learn what mattered to them, and bring the questions that matter to you to your next visit.
Read the full patient accounts and original sources below. Review totals reflect the source ratings available here.
A person behind your care
Get to know
Prem N. Ramkumar.
Dr. Prem Ramkumar is a board-certified, dual fellowship-trained orthopedic surgeon specializing in hip and knee care for patients of all ages—from ACL reconstructions and cartilage transplants to partial and total joint replacements. Known for his meticulous preparation and thoughtful follow-through, Dr. Ramkumar delivers surgical care that’s not only technically advanced, but personally tailored.
Patients consistently describe him as kind, thorough, and exceptionally communicative. He takes time to explain your condition and walk you through your options clearly, so you feel informed and confident in every decision. Many credit him with life-changing results and highlight the warm, supportive team that surrounds him at every step.
Fluent in English and Spanish, Dr. Ramkumar brings both surgical precision and deep empathy to his work—whether he’s helping a young athlete return to sport or guiding an older adult through joint replacement and recovery.
Outside the OR, he’s on the tennis court, hiking trails, or catching a Lakers game—“it’s rare that I’ll miss one.”
Total Hip ReplacementHip ResurfacingTotal Knee ReplacementPartial Knee ReplacementRevision SurgeryHip Arthroscopy
Bring what matters to you
Your questions
belong in the conversation.
Want to hear how patients describe conversations and care involving partial knee replacement? Read their accounts alongside the faces and profiles of our clinicians, with links back to each review’s source.
- What would I like to ask at a consultation about partial knee replacement?
- Which details in these patient accounts would I like to ask our team about?
In their own words
Care feels personal.
So do these stories.
These are individual experiences. A topic mention does not establish who performed a procedure, medical suitability or a typical result.
This collection shows written reviews rated 4 or 5 stars that mention partial knee replacement. You can read every rating and written review on the full clinician profile.
10 written reviews
Highest rated first · Newest within each rating
My 80 year old father had been in progressing pain and compromised quality of life due to his knee, but decided he was done suffering and needed surgery. He tried everything, I mean EVERYTHING before deciding on surgery. When he met Dr. Ramkumar, he felt like he was in good hands. From the first consultation, pre-surgery, surgery, and post-surgery appointments, Dr. Ramkumar took ample time and showed patience with my apprehensive parent. Both of my parents are surprised by the quick recovery and ecstatic with the results. A partial knee replacement with full mobility and activity in 2 weeks - wow, just wow! As a child of aging parents, I worry about my folks, but I never felt any concern or doubt in the ability or expected outcome. I feel relieved and am glad that my dad has his quality of life back. He's actually better than ever! I attribute it all to Dr. Ramkumar's skill and ability. I recommend him to anyone that needs a procedure or consultation. He will be honest and tell you the truth. Trust his opinion.
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
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
i had partial knee replacement. started walking same day. n was driving in 4 days. excellent dr. and very proffesional medical staff.
Prem N. Ramkumar, MD, MBA
My partial knee replacement with Dr. Prem Ramkumar was a great experience. The entire team was exceptional from the initial consultation to post-op care. Call back questions were taken care of in a timely manner. I had no bruising, I’m 4 weeks post-op and walking without a walker or cane. I no longer have knee pain and started walking around my neighborhood. I’m extremely happy and would recommend Dr. Ramkumar.
Prem N. Ramkumar, MD, MBA
Dr Ramkumar is a great doctor. He made my experience of having partial knee replacement as positive a process as can be. My recovery is going great thanks to him. I have been able to return to all my normal activities after 2 months. I have recommended him to friends and family, and will continue to do so.
Prem N. Ramkumar, MD, MBA
I had a partial knee replacement surgery on 10/16/2023. My recovery is amazing. Today (2 and a half weeks post-op, I am able to do 100% weight bearing on my surgical leg. I had minimal bruising post-op and pain was manageable. Along the way, Dr. Ramkumar was there and easily accessible via text messages. He is extremely attentive to my needs. When he advised me to consider partial knee vs. Total knee, he explained the logic for his recommendation. I respected his opinion and I am vey happy with the outcome. He's extremely knowledgeable, very tech savvy and has excellent bedside manner. I am certain he will treat all his patients with love and grace. Thank you Dr. Prem Ramkumar!
Prem N. Ramkumar, MD, MBA
Well I think he extremely great doctor .Dr. Ramkumar explain the exrays that was taken of the knee on the picture of the exray,when I went on my appt. Before he did the surgery. My surgery went well, actually no pain. I had a Partial knee replacement and I was able to bend my knee within 7 days now on 14 days no medication. I'm can walked without a cane. So I will go back in a few months to get my right knee done. Dr. Ramkumar whole dept was very helpful and nice and courtesy. Glenda M.
Prem N. Ramkumar, MD, MBA
A little more understanding