I am suffering from knee pain due to osteoarthritis, and I am scheduled to have total knee replacement (TKR) surgery. I enjoy bike riding, but I am concerned that this will become impossible after the surgery.
After a total knee replacement, will I be able to ride a bicycle, and if so, when can I start bicycling after the surgery?
A total knee replacement (TKR) surgery is performed to treat the pain, stiffness, and loss of mobility caused by knee arthritis. Having a TKR can be a painful experience, and you may find that you require physical therapy after your TKR to help you restore normal range of motion (ROM) and strength.
After your TKR operation, you may receive physical therapy services in the hospital. There, you may use a continuous passive motion (CPM) machine to help improve the ROM in your knee. You will also learn exercises to help regain normal strength and mobility in your knee.
Once you are well enough to go home from the hospital, you may start home care physical therapy. If you are able to leave your house, you may begin physical therapy in an outpatient clinic.
During outpatient physical therapy, your therapist may have you ride a stationary bicycle to help improve the mobility around your knee. Biking can be great exercise after a total knee replacement. Just be sure to ask your doctor or physical therapist if it is right for your specific condition.
In general, progressive ROM should be attempted when first starting cycling after TKR. Here is a good way to get started:
- First, be sure biking is safe for your specific condition. Many people can start using a stationary bicycle one to two weeks after a TKR operation. It is best to check with your doctor and physical therapist to be sure you can do it.
- Be sure the seat height is set correctly. To do this, sit on the bike seat with your operated knee straight down and resting on a pedal. There should be a slight bend to your knee when the pedal is at the lowest point.
- When starting to pedal the bike, start slowly. Most likely, you will not be able to pedal all the way around. This is normal. Just pedal around until your knee that was operated on bends as far as you can tolerate.
- When your knee is bent as far as possible, hold the position for a few seconds, then pedal in reverse. Again, start slowly and allow your knee to straighten. Continue pedaling backwards until your knee once again bends as far as possible.
- Again, hold the bent position for a few seconds, then slowly pedal forward once again. Repeat this sequence of forward and backwards pedaling for a few minutes. Most likely, you will find that your knee ROM improves quite quickly with this method and you will soon be able to pedal around fully on the bicycle.
Progressing on the Bike
So how do you know when you can start pedaling all the way around on the bike? In general, your knee must bend about 90 degrees to be able to fully pedal around on the bicycle. Have your physical therapist use a goniometer to check you knee ROM. When you have reached 90 degrees of knee flexion (bending), you most likely will be able to pedal fully on the bike. Also, don't be surprised if you find it easier to pedal backwards on the bike before forward. This is a common occurrence after TKR.
Once you are able to fully pedal on the bike, you may wish to add some light resistance to help improve the strength and endurance of your leg muscles. Check with your physical therapist, and make sure you add a little resistance at a time. Your therapist can help you determine the right amount. A slight increase in knee discomfort can be expected when increasing the resistance on the bike. If you start feeling sharp pain in your knee, then inform your physical therapist and decrease the resistance or stop biking.
You can expect to be able to ride a stationary bicycle one to two weeks after your total knee replacement operation. Remember that everyone is different, and your specific condition may require that you wait a bit longer before starting a bicycling program for you TKR rehabilitation.
While biking may be an important component to regaining ROM after TKR, be sure that you work on other exercises that your physical therapist may prescribe to help improve your strength and functional mobility like walking and stair climbing. By working hard in physical therapy, both on and off the bike, you can be sure to maximize your chances of a full recovery and a rapid return to normal activity.