Is Surgery Necessary for Femoral Necrosis? Your Options - Orthopedics

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Is surgery always necessary for femoral head necrosis?


Hello, Doctor Shi: About 12 years ago, I suffered a femoral fracture due to a car accident.
The injury was located near the knee.
I underwent surgery for fracture fixation at that time, and the bone screws were removed six months post-operation.
However, over the years, I have experienced occasional soreness in my thigh, and the muscle in that area has shown signs of atrophy.
In the past year, I have frequently felt stiffness and pain in the popliteal region of my knee, with sharp pain in the kneecap and noticeable clicking sounds, which have made standing or walking difficult.
Six months ago, due to the sharp pain, I went to the hospital for an examination.
The initial X-ray diagnosis was mild degenerative arthritis, and the doctor prescribed USERM (Ursodeoxycholic Acid) and Acemet Retard (Acemetacin) extended-release capsules.
After nearly three months of taking the medication, there was no significant improvement in pain.
The doctor then arranged for an MRI, which revealed avascular necrosis of the femoral shaft.
A whole-body bone scan was also conducted, confirming the bone necrosis, and the doctor indicated mild inflammation in the knee joint.
However, surgery for femoral decompression and injection of artificial bone was recommended.
Post-surgery, is it true that I would not need rehabilitation and only require the use of a cane for a few months? I found online that avascular necrosis typically refers to the "femoral head" affecting the hip joint, while my current condition involves the "femoral shaft" affecting the knee joint.
Is there a difference between the two? Having previously undergone surgery for the fracture, I am fearful of the pain associated with post-operative rehabilitation and am concerned about the necessity of another surgery.
What would happen if I choose not to have the surgery? If I do have the surgery, will the pain and soreness resolve? Are there potential complications from this surgery? Will I need another surgery in ten years or so?

Cathy, 40~49 year old female. Ask Date: 2018/09/05

Dr. Shi Guozheng reply Orthopedics


The treatment methods for osteonecrosis of the femoral condyle in the knee joint include decompression and bone grafting.
In severe cases, total knee arthroplasty may be necessary, as non-surgical options may not lead to improvement.

Reply Date: 2018/09/05

More Info


When considering the necessity of surgery for femoral necrosis, particularly in your case involving the femoral shaft, it is essential to understand the implications of your diagnosis and the potential treatment options available.
First, let's clarify the difference between necrosis of the femoral head and the femoral shaft. Femoral head necrosis, often associated with conditions like avascular necrosis, primarily affects the hip joint and can lead to significant joint dysfunction and pain. In contrast, necrosis of the femoral shaft may not directly impact the hip joint but can still lead to complications such as pain, instability, and potential deformity in the knee joint, as you have experienced.
Your symptoms of pain, muscle atrophy, and knee stiffness suggest that the necrosis is affecting your quality of life. The MRI findings indicating necrosis in the femoral shaft, along with the diagnosis of mild degenerative arthritis in the knee, highlight the need for careful management. The proposed surgery, which involves decompression and the injection of artificial bone, aims to alleviate pain and potentially restore function by addressing the necrotic area.

Regarding your concerns about surgery, it is important to weigh the risks and benefits. Surgery may not be absolutely necessary if the pain is manageable and does not significantly impair your daily activities. However, if the pain is persistent and worsening, surgery could provide relief and improve your quality of life. Without surgical intervention, the necrotic area may continue to cause pain and could lead to further complications, such as chronic pain or increased disability.

Post-surgery, the expectation is that the pain should decrease, but it is crucial to understand that recovery can vary from person to person. While some patients experience significant relief, others may still have residual discomfort. The rehabilitation process is vital; even if the surgery is minimally invasive, engaging in physical therapy is often necessary to regain strength and mobility.
As for your fears regarding potential complications or the need for future surgeries, it is true that any surgical procedure carries risks, including infection, nerve damage, or complications related to anesthesia. However, many patients find that the benefits of pain relief and improved function outweigh these risks. The longevity of the surgical outcome can vary, and while some individuals may require additional procedures in the future, others may not experience significant issues for many years.

In summary, while surgery may not be the only option, it is often the most effective way to address significant pain and functional impairment caused by femoral necrosis. It is crucial to have an in-depth discussion with your orthopedic surgeon about your specific situation, including the potential outcomes of surgery versus conservative management. This will help you make an informed decision that aligns with your health goals and lifestyle. Remember, the aim of any treatment is to enhance your quality of life, and addressing the underlying issues is a step towards achieving that.

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