Joint Replacement Specialists: Paramus & Wayne, NJ 

Dr. Lorraine Stern has highly advanced training and experience in the latest hip and knee replacement technology using the Mako Robotic System.


At Modern Orthopaedics of New Jersey, we specialize in Total Joint Replacement Procedures of the Hip & Knee.

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Learn About Dr. Stern’s
Hip Treatment Process

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Learn About Dr. Stern’s
Knee Treatment Process

Meet Dr. Lorraine Stern

Board-Certified Orthopedic Surgeon
Specializing in Joint Replacement of the Hip & Knee

Dr. Lorraine Stern

Dr. Lorraine Stern | Board-Certified Orthopedic Surgeon, Specializing in Hip & Knee Procedures

Our Concierge Joint Replacement Program

At Modern Orthopaedics, we offer a fully concierge-trained staff designed to guide each unique patient through questions, scheduling, insurance, and anything else needed to ensure the best possible experience of our treatments.

Joint Replacement & Robotic-Assisted Surgery

A Total Knee Replacement involves the entire knee joint, which is needed for certain patients. However, if only one section of the knee has been damaged, Dr. Stern can perform a Partial Knee Replacement, and replace just the damaged portion of the knee joint. 

During a Total Hip Replacement, the hip is a ball-and-socket joint, and both sections of the joint are usually removed and replaced in a total hip replacement procedure.

  • Robotic or Traditional surgery may be advised depending on the circumstances of each individual patient. To find out if you qualify, book an appointment with Dr. Stern. 
  • The Mako technology provides us with patient-specific 3-D models to pre-plan your hip or knee replacement.
  • During surgery, Dr. Stern guides the robotic arm based on your surgical-specific plan.
  • This advanced system helps us to focus on the removal of diseased bone while preserving healthy bone.
  • The robotic system also assists Dr. Stern in positioning the total hip/knee implant perfectly based on each patient’s individual anatomy.
  • The robotic arm provides tactile, visual, and auditory feedback to assist Dr. Stern in achieving the desired orientation, which enhances post-operative stability and mobility.

Are you a candidate for Hip or Knee Replacement? 

Frequently Asked Questions

What is a total knee replacement?

The damaged bone on the end of your femur (thigh) bone, top of your tibia (shin) bone and patella (kneecap) are removed and replaced with metal and plastic to restore the function of the knee joint.  This is done using an incision on the front of your knee with the assistance of a robotic arm to help prepare the thigh and shin bones.

What is a total hip replacement?

The damaged bone of the ball and socket joint are removed and replaced with metal, plastic and sometimes ceramic to restore the function of the hip joint.  This is done using an incision on the back of your hip and sometimes with the assistance of a robotic arm to help with preparation and placement of the new socket.

I may need a hip or knee replacement in the future, what can I do now to optimize my health?

See your primary care physician and discuss that you are planning to undergo surgery in the future to replace your hip.  If you are a diabetic, having good control of your blood sugar will help decrease the risk of complications.  If you are a smoker, stop smoking as soon as possible.  Even one month without smoking will decrease the risk of complications.  Work with your doctor to optimize your weight and nutrition as much as possible before surgery.  If you have any dental work that needs to be done, make sure that you speak with your dentist to have this addressed prior to any joint replacement surgery.

When I decide to go forward with a joint replacement, what will be needed prior to surgery?

Before surgery you will need to see your primary care doctor for medical optimization.  If you have any heart problems, you will also need to see your cardiologist and they may require further testing.  You will need to go for blood work, and right before the date of the surgery, a COVID-19 test administered at the hospital.  The hospital requires that all patients undergoing joint replacement attend a preparatory class.  Please see below for the links to get started. In the days leading up to surgery, you will be asked to use a special ointment in your nose and to bathe with a special soap to help decrease the risk of infection.

What can I expect the day of surgery?

You will meet the anesthesiologist in the pre-operative area.  They will review your medical record and discuss the anesthesia that will be used for the procedure.  Typically, joint replacement is done with regional anesthesia and sedation.  This will allow you to hopefully avoid the side effects of general anesthesia and allow you to begin to participate in physical therapy hours after your surgery, sometimes even in the recovery room! 

How long will I need to stay in the hospital?

Most patients are able to go home the next day with the assistance of home care services.  In the hospital you will receive several sessions of physical therapy and they will go over with you any special restrictions you might have after surgery. 

What can I expect in my recovery after surgery?

You will need to have extensive physical therapy after your surgery to ensure the best possible outcome in being able to return to your activities.  This will start in the hospital, continue at home with home therapy for some and then finally progress to outpatient physical therapy where you will work on regaining motion, strength, flexibility and gait (walking). Most patients can expect to be involved with therapy for at least 3-6 months after their surgery.

Will I have any restrictions after surgery?

Patients who have a total hip replacement will need to abide by certain precautions after surgery to ensure that the joint remains stable and does not dislocate.  This risk is highest in the first 6 weeks after surgery and diminishes over time.  Your dentist will need to be informed of your joint replacement surgery so that you can be given antibiotics if deemed appropriate before dental work.

Orthopedic Doctors New Jersey

About Us

Modern Orthopaedics specializes in conditions and treatments of the shoulder, elbow, hand/wrist, hip, knee and foot/ankle with locations in Wayne, Parsippany, and Paramus, NJ.


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