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2025-07-01
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85-Year-Old Woman Avoids Rehabilitation! Safe and Precise Minimally Invasive Knee Replacement with Robotic Arm Four Key Facts to Know Before Undergoing Total Knee Replacement Surgery

 
 

3D Robotic Arm-Assisted Minimally Invasive Total Knee Replacement

Degenerative arthritis is a common issue among middle-aged and elderly individuals. In severe cases, it can impair mobility and significantly reduce quality of life. Dr. Chien-Chun Chang, Director of the Minimally Invasive Joint Center, shares the case of an 85-year-old female patient who suffered from severe degenerative knee arthritis, experiencing long-term pain that made normal walking impossible. Dr. Chang performed the latest 3D robotic arm-assisted minimally invasive total knee replacement surgery (ROSA Knee). The patient was able to get out of bed and walk the next day after surgery without requiring rehabilitation, and her recovery progressed well.
An 85-year-old elderly woman with advanced degenerative knee arthritis was unable to walk normally for a long time. Due to her age, her family was concerned about the risks of surgery. After evaluation by Dr. Chien-Chun Chang, she underwent a ROSA Knee robotic arm-assisted total knee replacement. The surgery achieved high precision in bone cuts and angles, minimizing errors. The patient was able to get out of bed and walk the day after surgery, without the need for rehabilitation, and her recovery was smooth. Before discharge, she could bend her knee to over 120 degrees and had smooth flexion and extension motion.
  • 85-year-old patient with advanced right knee degeneration – Before surgery

  • 85-year-old patient underwent robotic arm-assisted knee replacement – After surgery

Traditional total knee replacement surgeries typically result in about 80% patient satisfaction. Dr. Chang explains that since the knee is a mobile joint, if the implant is not accurately measured and planned, patients often require lengthy rehabilitation to adapt to the looseness or tightness of the artificial joint, leading to postoperative discomfort. In contrast, the ROSA Knee robotic arm-assisted system enables precise preoperative planning and 3D real-time imaging, allowing exact control of bone cutting dimensions and joint angles, minimizing errors and significantly improving surgical accuracy and patient satisfaction.

 

 

 

Dr. Chang further explains that the ROSA Knee system, combined with minimally invasive techniques, offers the advantages of smaller incisions and reduced bleeding. It can also analyze soft tissue and bone conditions in real time, allowing for intraoperative adjustment of joint tightness and motion, making the implant more physiologically similar to a natural knee. As a result, patients do not require rehabilitation, can get out of bed the day after surgery, and are typically discharged within 3 to 5 days, with a significantly shortened recovery period.

 

One Week After Total Knee ReplacementNatural flexion reaches 120 degrees – No rehabilitation required


Stages of Knee Osteoarthritis
OA-knee-ENG-V2
 

For the treatment of degenerative arthritis, Dr. Chien-Chun Chang recommends that patients in stages 1 and 2 first consider conservative treatments, such as medications or physical therapy. However, if the disease has progressed to stages 3 or 4, with joint deformity or severe wear in the joint space, partial or total knee replacement surgery may be necessary.The Minimally Invasive Joint Center, led by Dr. Chang, has extensive clinical experience and advanced equipment, committed to providing high-quality medical care for patients.

 

 

△Four Key Things to Know Before Total Knee Replacement △

1. How long does an artificial knee joint last?Most artificial joints last more than 10 to 15 years. With higher-quality materials, literature shows a lifespan of up to 20 years.

2. Is rehabilitation required after minimally invasive robotic-assisted knee replacement surgery?When can I be discharged?With robotic arm-assisted total knee replacement, rehabilitation is not needed, and patients are usually discharged within 3 to 5 days.

3. Can I squat after receiving a knee implant?Through the ROSA Knee robotic arm-assisted total knee replacement, patients can achieve over 120 degrees of flexion postoperatively without rehabilitation, which meets most daily activity needs.Most patients are able to squat after surgery. However, squatting is a high-load, single-point pressure motion, and is not ideal for patients with degenerative knee arthritis. To protect the implant, squatting should generally be avoided.

4. Does National Health Insurance cover artificial knee implants?Patients who meet National Health Insurance (NHI) eligibility criteria are entitled to reimbursement. NHI coverage includes anesthesia, hospitalization, and surgical fees. However, some specific materials and advanced technologies may require out-of-pocket expenses.For commonly used medical materials, there are both NHI-covered and self-paid options.

 

The physician will recommend the most suitable materials based on the patient’s condition, but the final decision should be made by the patient.

 

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