Recovery Timeline and Tips for Knee Replacement Surgery - Orthopedics

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Artificial knee joint


My mother is 67 years old and had a knee replacement surgery in July.
What is the approximate recovery time? What exercises should she do during rehabilitation, and can heat therapy help relieve soreness and tightness? Are there any other important considerations we should be aware of? Thank you very much!

Guo, 40~49 year old female. Ask Date: 2000/09/25

Dr. Shi Guozheng reply Orthopedics


The recovery time after undergoing a total knee arthroplasty is approximately three months, but it may vary depending on the individual case; some patients may take up to six months to return to normal function.
Within the first three months post-surgery, physicians recommend that patients use a cane for ambulation to promote joint stability and tissue healing.
During rehabilitation, patients can perform leg extensions and leg raises to increase muscle strength, gradually increasing the range of motion in the knee joint, ideally exceeding ninety degrees.
The more flexion achieved, the easier mobility will be; however, patients should avoid intentionally squatting to prevent joint injury.
If the joint is very stiff and cannot bend, applying heat may help soften it for better movement.
However, if symptoms such as redness, swelling, or warmth occur, patients should rest or apply cold compresses to prevent exacerbation of joint swelling.
For joint pain, patients may request a prescription from their physician to alleviate symptoms.

Reply Date: 2000/09/25

More Info


Knee replacement surgery, also known as total knee arthroplasty (TKA), is a common procedure for individuals suffering from severe knee pain and dysfunction, often due to osteoarthritis or other degenerative conditions. For your mother, who is 67 years old and had the surgery in July, the recovery timeline and rehabilitation process are crucial for achieving the best possible outcome.


Recovery Timeline
1. Immediate Post-Operative Phase (0-2 weeks):
- After surgery, patients typically stay in the hospital for 1 to 3 days. During this time, pain management is a priority, and physical therapy usually begins within 24 hours post-surgery. The focus is on gentle range-of-motion exercises to prevent stiffness.

2. Early Recovery Phase (2-6 weeks):
- By the end of the first week, many patients can begin walking with the aid of a walker or crutches. The goal during this phase is to regain mobility and strength. Patients may experience swelling and discomfort, which is normal. Physical therapy sessions will become more frequent, focusing on strengthening exercises and improving knee flexion and extension.

3. Intermediate Recovery Phase (6-12 weeks):
- Most patients can transition to walking without assistance by 6 weeks. Physical therapy continues to be essential, with exercises becoming more challenging to enhance strength and stability. Patients may still experience some swelling and discomfort, but it should gradually decrease.

4. Long-Term Recovery Phase (3-6 months):
- By 3 months, many patients can return to light activities and may notice significant improvements in mobility and pain reduction. Full recovery can take up to 6 months or longer, depending on individual factors such as age, overall health, and adherence to rehabilitation protocols.


Rehabilitation Exercises
During the rehabilitation process, your mother should focus on specific exercises to improve strength, flexibility, and function. Here are some recommended exercises:
- Quadriceps Sets: Tighten the thigh muscle while keeping the leg straight. Hold for a few seconds and release.

- Straight Leg Raises: While lying down, keep one leg straight and lift it to the height of the opposite knee. This helps strengthen the quadriceps.

- Heel Slides: While sitting or lying down, slide the heel of the operated leg towards the buttocks and then back to the starting position. This promotes knee flexion.

- Knee Bends: While standing or sitting, gently bend the knee to improve range of motion.

- Walking: Gradually increase walking distance as tolerated, which is crucial for overall recovery.


Pain Management and Heat Therapy
Post-operative pain and tightness are common. While mild discomfort can be managed with prescribed pain medications, heat therapy can also be beneficial. Applying a warm compress or heating pad to the knee can help alleviate stiffness and promote blood flow, which may aid in recovery. However, it’s essential to avoid heat application if there is swelling, as ice may be more appropriate in that case.


Additional Considerations
- Follow-Up Appointments: Regular follow-ups with the orthopedic surgeon are essential to monitor healing and address any concerns.

- Physical Therapy: Engaging in a structured physical therapy program is crucial for optimal recovery. A physical therapist can tailor a program specific to your mother’s needs.

- Activity Modifications: Encourage your mother to avoid high-impact activities and excessive twisting motions until cleared by her physician.

- Nutrition and Hydration: A balanced diet rich in protein, vitamins, and minerals can support healing. Staying hydrated is also important.

In conclusion, recovery from knee replacement surgery is a gradual process that requires patience and commitment to rehabilitation. By following a structured recovery plan, engaging in physical therapy, and managing pain effectively, your mother can achieve significant improvements in her knee function and quality of life. If you have any further questions or concerns, do not hesitate to reach out to her healthcare provider for personalized guidance.

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