KNEE CONDITION AND MOBILITY
Once you’ve had knee replacement surgery and completed rehab, your knee should have a range of motion of 100-120 degrees, sufficient for all your daily tasks such as walking and climbing stairs.
Thanks to your new knee, you will be able to do many of the activities you did before your knee surgery, but with little or no pain. Most people with total knees can do recreational walking, swimming, golf, driving, light hiking, recreational biking, ballroom dancing, and stair climbing without difficulty.
ACTIVITIES TO AVOID
Even though your activity level is likely to increase, a knee replacement surgery means that high-demand or high-impact activities must be avoided. You should definitely avoid running or jogging, contact sports, jumping sports, and high impact aerobics.
You should also try to avoid vigorous walking or hiking, skiing, tennis, repetitive lifting exceeding 50 pounds, and repetitive aerobic stair climbing. The safest aerobic exercise is biking (stationary or traditional), because it places very little stress on the knee joint.
HOW LONG YOUR IMPLANT SHOULD LAST
The average total knee currently lasts 10-15 years before the components wear out. In some cases, worn components can be easily switched out for new ones, but revision surgery is always an experience doctors and patients want to avoid if at all possible.
Knee surgery has great potential to improve your quality of life and ensure that you can remain active and vital.
Sometimes a knee replacement is the only option for reducing pain and restoring a normal activity level. If your doctor decides that knee surgery is right for you, here is an idea of what to expect during the days leading up to and the day of your surgery.
PRE-SURGERY ROUTINES
Once you and your orthopaedic surgeon have decided to proceed with knee replacement surgery, there are several activities that must occur to help make sure all goes well.
First you will have your initial surgical consultation, which will include preoperative X-rays, a complete past medical history, a complete past surgical history, and a complete list of all medications and allergies. This consultation will also include orthopaedic examination and discussion of the knee replacement surgery procedure.
Next you will have a complete physical examination. Your internist or family physician will determine if you are in the best possible condition to undergo knee surgery.
You may wish to donate blood prior to your knee replacement surgery in the event that a transfusion is required after surgery.
Your doctor may recommend that you see a physical therapist before surgery to learn exercises to begin prior to surgery. You will also get an overview of the rehabilitation process after knee replacement surgery. This will prepare you better for your post-operative care.
PREPARATION FOR THE HOSPITAL
You may want to bring the following items to the hospital for your knee replacement surgery:
- Clothing: underwear, socks, t-shirts, exercise shorts for rehabilitation
- Footwear: walking or tennis shoes for rehab, slippers for hospital room
- Walking aids: walker, cane, wheelchair, or crutches if used prior to surgery
- Insurance information
The evening before surgery you should not eat or drink after midnight. Your surgeon may provide you with special soap. You should shower and use this soap to scrub the surgical area for five minutes, or as long as prescribed. Prepare your belongings for the hospital, relax, and get a good night’s rest before your surgery day.
PRE-OPERATIVE PROCEDURES
On the morning of your knee replacement surgery you will be admitted to the hospital. Your vital signs will be taken, you’ll be given a clean hospital gown to wear during the procedure, and an IV will be started to give you fluids and medication during and after the procedure.
You may be provided an elastic stocking to decrease the likelihood of blood clots. You will be asked to empty your bladder. All jewelry, dentures, contacts, and nail polish must be removed. The surgical leg will be scrubbed and shaved in preparation for surgery. The anesthesiologist will come into your room and discuss the type of anesthesia that will be used. Finally, you will be taken into the operating room.
SURGERY AND RECOVERY
A total knee replacement involves cutting away the damaged bone of the knee joint and replacing it with a prosthesis. You will be under anesthesia during the procedure.
After your surgery is completed, you will be transported to the recovery room for close observation of your vital signs, circulation, and sensation in your legs and feet. As soon as you awaken and your condition is stabilized, you will be transferred to your room.
Your doctor may prescribe a PCA device (patient-controlled analgesia) that is connected to your IV. The unit is set to deliver a small, controlled flow of pain medication and is activated when you firmly press the button on your machine. Press the button anytime you are having pain.
You may have a catheter inserted into your bladder as the side effects of anesthesia may make it difficult to urinate.
A continuous passive motion (CPM) unit may be placed on your leg to slowly and gently bend and straighten your knee. This device, if prescribed, is important for quickly regaining your knee range of motion.