ZUK Partial Knee Replacement

Partial Knee Replacement

Partial knee replacement has been around as a surgical option for more than 30 years. The ZUK implant builds on this foundation and has been helping people who only have damage on one side - or compartment - of their knee since its introduction in 2004. Unlike many other partial - and total - knee implants, the ZUK implant is designed to allow for high flexion of the knee. Flexion is the extent to which the knee is capable of bending. While the ZUK implant cannot guarantee you high-flexion, it has been designed to accommodate up to 155° of flexion if you are able to achieve it. The ZUK partial knee was designed for placement using today's minimally invasive techniques. If you are a candidate, minimally invasive surgery may help you get back to life and work faster than you would if you underwent traditional knee replacement surgery. For more information on minimally invasive knee surgery, please visit www.orthoinfo.org.


Potential Benefits Of Partial Knee Replacement Compared with Total Knee Replacement

(Results may vary)

  1. No disruption of the knee cap1
  2. Less blood loss2
  3. Possibility for less post-operative pain2
  4. Faster rehab/recovery time2
  5. Better range of motion3

1Based on ZUK surgical technique
3 Laurencin CT, Zelicof SB, Scott RD, Ewald FC. Unicompartmental versus total knee arthroplasty in the same patient. A comparative study. Clin Orthop Relat Res. 1991; (273):151-156

Description of the ZUK Partial Knee Implant Procedure

The invasive procedure allows your surgeon to access, remove and accurately replace only the damaged surface of the knee, leaving your healthy bone intact. Below is a brief description of the procedure:

  1. An incision is made to expose the damaged joint
  2. The end of the femur and top of the tibia are shaped to accommodate the ZUK Partial Knee components
  3. Trial components are placed to ensure proper alignment
  4. Once properly aligned, the trial components are removed
  5. The femoral and tibial ZUK Partial Knee UNI components are implanted
  6. The incision is closed.

Post-Operative Protocol

After leaving the operating room, you will be transported to recovery where you will be closely monitored. Once you have recovered from surgery and your surgeon has given approval, you will begin the post-operative rehabilitation process.

Your surgeon may recommend the following to begin rehabilitation while you are still in the outpatient surgery center or hospital:

  1. Ice and elevation to reduce pain and swelling in your knee
  2. A continuous passive motion machine that will promote the return of your knee's range of motion
  3. Walking with a walker or crutches
  4. Instruction in your home exercise program which may include the exercises shown on the following pages

What To Expect:

  • On average, this type of surgery takes approximately one to three hours, depending on your individual circumstances.
  • Usually you'll be in recovery for one to three hours after surgery.
  • After surgery, your pain will be managed via intravenous therapy and/or a pain pump and/or injection and/or pills given by mouth.
  • Depending on your situation, you will probably be able to walk with the aid of a walker or cane the day of or day after surgery.
  • It is normal for your joint to remain warm, swollen and slightly tender for a number of weeks. Call your doctor immediately, however, if you notice:
    • Increased pain, redness or swelling
    • Incision drainage
    • Prolonged nausea or vomiting
    • Chest pain or shortness of breath
    • Tenderness in the calf or thigh of the operated leg
    • A fever
  • Most patients are ready to drive a car about eight weeks after surgery, but not unless your surgeon authorizes it.
  • Recovery varies greatly based on individual factors but most patients resume normal activities in about 12 weeks following surgery.

Important: Not all patients are candidates for the ZUK Partial Knee Implant. Discuss your condition and implant options with your surgeon. Individual results of joint replacement vary. Implants may not produce the same feel or function as your original knee. There are potential risks to knee replacement surgery such as loosening, fracture, dislocation, wear and infection that may result in the need for additional surgery. Longevity of implants depends on many factors, such as types of activities and weight. Do not perform high impact activities such as running and jumping unless your surgeons tells you these activities are acceptable. Early device failure, breakage or loosening may occur if you do not follow your surgeon's limitations on activity level. Early failure can happen if you do not guard your knee joint from overloading due to activity level, failure to control body weight or accidents such as falls. Talk to your doctor to determine what treatment may be best for you. For additional information on these risks, talk to your surgeon.

The information in this booklet is for informational and educational purposes only and is not meant as medical advice. Every patient's case is unique and each patient should follow his or her doctor's specific instructions. Please discuss nutrition, medication and treatment options with your doctor to make sure you are getting the proper care for your particular situation.

All information provided on this website is for information purposes only. Every patient's case is unique and each patient should follow his or her doctor's specific instructions. Please discuss nutrition, medication and treatment options with your doctor to make sure you are getting the proper care for your particular situation. If you are seeking this information in an emergency situation, please call 911 and seek emergency help.

All materials copyright © 2020 Smith & Nephew, All Rights Reserved.


Dr. Gregory Lauro is available to answer any questions patients or their families may have regarding hip and knee conditions.


Dr. Lauro just did my left knee on July 2016,,,did my right knee on March of last year. He took great care of me,, I always felt that I could ask him anything and get a direct answer. His staff can’t be beat..they are courteous, and always ready to help you with any inquires you might have…What more can you ask for in a doctor. He gave me excellent care.


Dr. Lauro was recommended by Dr Hennesy. He was encouraging and focused. I am very happy with the results of my hip replacement and recovery time has been very rapid. Would recommend this Dr. and procedure very highly.


Dr. Lauro was wonderful. I had many orthopedics problems that arose from another doctor and Dr. Lauro handle all of them without a problem. It has been a long year but I do not know what I would have done without Dr. Lauro’s expertise in his field and his great care the he provided me.


Replaced left hip. remarkable results! Appointment dates/time convenient and office wait minimal. Respects active life style. Honest, forthright advice.


Dr. Lauro replaced my hip 7 years ago. His office staff is wonderful to speak with and he takes his time during office visits. Never rushes you through and answers any questions thoroughly and honestly.


Dr. Lauro has been doing partial knee replacements for 25 years and worked wonders for me. After only 3 months I no longer need my cane and my scar looks amazing. His office staff is as friendly as you could want. Very clean environment. Little to no waiting both in and out of the waiting rooms. He is very attentive and explains things very well. He listens more than he talks and is dedicated to his practice. I would and have recommended him a lot. A true professional who knows what he is doing.



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   Excela Health Orthopedics
5840 Rte. 981, Suite 101
Latrobe, PA. 15650

Excela Health Orthopedics
508 S. Church Street, 1st Floor
Mount Pleasant, PA. 15666


Phone #:  1.724.532.1118
Fax#:  1.724.532.1307


ZUK Partial Knee Replacement
VERILAST Knee Replacement

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