What is the range of extension for a knee?
Reference Values for Normal Joint Range of Motion
| Motion | Females | Males |
|---|---|---|
| Knee flexion | 137.8 (136.5 – 139.1) | 132.9 (131.6 – 134.2) |
| Knee extension | 1.2 (0.7 – 1.7) | 0.5 (0.1 – 0.9) |
| Ankle dorsiflexion | 11.6 (10.6 – 12.6) | 11.9 (10.9 – 12.9) |
| Ankle plantar flexion | 56.5 (55.0 – 58.0) | 49.4 (47.7 – 51.1) |
What is the normal ROM for knee flexion?
A fully bent knee will max out at about a full range of motion of 135° degrees of flexion. As a general rule, a knee flexion of about 125° will allow you to carry out most normal activities. For daily living, a minimum flexion of around 105°-110° is required.
How much flexion and extension does the knee joint allow?
As the knee is a synovial hinge joint, its function is to permit the flexion and extension of the lower leg relative to the thigh. The range of motion of the knee is limited by the anatomy of the bones and ligaments, but allows around 120 degrees of flexion.
What is the normal range of motion after knee replacement?
90 degrees is the same thing as a right angle. If you achieve 90 degrees by one week, and continue to push forward after this, you will end up with excellent range of motion of your knee replacement. Most of our patients end up with 120 to 125 degrees of flexion.
How long does it take to get full range of motion after knee surgery?
It is essential to regain functional range of motion by 6 weeks after surgery. Remember, patients can only reliably regain knee range of motion for the first 6 weeks following knee replacement surgery. Beyond this point, scar tissue becomes too stiff and inflexible for simple stretching to be successful.
What causes limited knee flexion?
Motion may be limited because of a problem within the joint, swelling of tissue around the joint, stiffness of the ligaments and muscles, or pain.
What should my range of motion be 6 weeks after TKR?
Weeks 2-3: the goal is to achieve at least 100° knee flexion and full knee extension. Weeks 4-6: you should be approaching or have already achieved 110-120° of full knee flexion. Weeks 6+: the goal is to focus on strengthening the lower extremity muscles with functional range of motion at the knee joint.
What is maximum range of motion after knee replacement?
Sitting cross-legged requires about 120°. Most people can achieve up to about 145°. Many knee replacement patients won’t be getting the full ROM, however.
What causes poor knee extension?
Knee extension deficit is frequently observed after anterior cruciate ligament reconstruction or rupture and other acute knee injuries. Loss of terminal extension often occurs because of hamstring contracture and quadriceps inactivation rather than mechanical intra-articular pathology.
Why don’t I have full range of motion in my knee?
When a joint does not move fully and easily in its normal manner it is considered to have a limited range of motion. Motion may be limited by a mechanical problem within the joint, swelling of tissue around the joint, spasticity of the muscles, pain or disease.