Knee Flexibility After Open Fracture: Recovery Insights - Orthopedics

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Inability to flex the knee?


Hello doctor, I was in a car accident on October 1, 2015, which resulted in an open fracture of my knee and a closed fracture of my thigh.
I have been gradually rehabilitating since then, and I only started walking again last month.
Currently, my leg can only bend between 75 to 80 degrees.
I would like to ask how long it might take to gradually increase the angle if I continue to push myself to bend my leg.

Junhao, 20~29 year old female. Ask Date: 2016/01/20

Dr. Shi Guozheng reply Orthopedics


It has been over three months since the fracture, and the current degree of bending is still insufficient.
It is necessary to actively engage in rehabilitation, as joint mobility is lacking.
It may be necessary to consider manipulation under anesthesia to see if there is any improvement.
Detailed circumstances should be discussed with your attending physician.

Reply Date: 2016/01/20

More Info


Recovering from a knee open fracture, especially when compounded by other injuries such as a closed femur fracture, is a complex process that requires careful management and rehabilitation. Given your situation, where you have been working on regaining knee flexion after a significant injury, it’s important to understand several key factors that influence your recovery timeline and flexibility.

First, the degree of knee flexion you currently have (75-80 degrees) is a common scenario for individuals recovering from knee injuries, particularly after an open fracture. The healing process for bones and soft tissues can vary significantly from person to person, influenced by factors such as age, overall health, the severity of the injury, and adherence to rehabilitation protocols. In general, achieving full range of motion (ROM) can take several months, and in some cases, it may take up to a year or longer, especially if there are complications such as stiffness or scar tissue formation.

To increase your knee flexion, it is crucial to engage in a structured rehabilitation program that includes both passive and active range of motion exercises. Passive stretching can help improve flexibility without putting too much strain on the healing tissues. Active exercises, where you actively engage your muscles to bend the knee, are essential for building strength and improving function. It is advisable to work closely with a physical therapist who can tailor a rehabilitation program to your specific needs and monitor your progress.

Regarding your concern about "forcing" the knee to bend, it is important to strike a balance. While it is essential to challenge your knee to improve flexibility, pushing too hard can lead to pain and potential setbacks. Pain is a signal from your body that should not be ignored. If you experience significant pain while trying to increase your knee flexion, it may be beneficial to ease off slightly and focus on gentle stretching and strengthening exercises instead. Gradually increasing the intensity and duration of your exercises can lead to better outcomes without risking injury.

In terms of how long it might take to see improvements in your knee flexion, it can vary widely. Many patients may see gradual improvements in their range of motion over weeks to months, especially with consistent rehabilitation efforts. However, if you find that your progress has plateaued or if you are experiencing persistent pain, it may be worth discussing with your orthopedic surgeon or physical therapist the possibility of additional interventions, such as manual therapy or even surgical options if necessary.

Finally, regarding the use of assistive devices like crutches or a knee brace, these should be used as long as necessary to ensure safety and stability while walking. As your strength and confidence improve, you may gradually reduce reliance on these devices. Typically, patients can expect to transition away from crutches within a few weeks to months, depending on their recovery progress.

In summary, the journey to regaining knee flexibility after an open fracture is multifaceted and requires patience, persistence, and a well-structured rehabilitation plan. By working closely with your healthcare team and listening to your body, you can optimize your recovery and work towards achieving your goals of increased knee flexion and functional mobility.

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