Yes, AVN can affect both hips. Treatment depends on the stage of AVN in each hip, the size and location of the affected area, symptoms and whether the femoral head has collapsed. Early-stage disease may be managed with joint-preserving treatment in selected patients, while advanced AVN with collapse may require total hip replacement.
What Is Bilateral AVN?
Bilateral AVN means that both femoral heads have developed avascular necrosis.
The femoral head is the ball-shaped upper end of the thigh bone that fits into the hip socket. It depends on a blood supply to maintain healthy bone tissue. When that blood supply is disrupted, part of the bone can become damaged and eventually collapse.
Importantly, bilateral AVN does not mean both hips will necessarily progress at the same speed.
Why Does AVN Affect Both Hips?
When AVN is caused by a systemic or non-traumatic factor rather than a local injury, more than one joint may be affected.
Common risk factors include:
1. Long-Term Steroid Use
Long-term or high-dose corticosteroid use is an important risk factor for osteonecrosis.
Steroids may be prescribed for conditions such as lupus, asthma and other inflammatory diseases.
Do not stop prescribed steroids suddenly without medical advice.
2. Excessive Alcohol Consumption
Long-term excessive alcohol consumption is another recognized risk factor for AVN.
3. Blood Disorders
Certain blood disorders, including sickle cell disease, can increase the risk of osteonecrosis.
4. Autoimmune Diseases
Conditions such as lupus and rheumatoid arthritis have been associated with osteonecrosis.
5. Previous Trauma
A fracture or dislocation can damage blood vessels supplying the femoral head. Traumatic AVN may affect one hip, but the presence of bilateral disease may prompt doctors to look for additional non-traumatic risk factors.
6. Other Medical Conditions
Gout, pancreatitis, HIV infection, Gaucher disease and certain cancers have also been associated with AVN.
7. No Identifiable Cause
Sometimes doctors cannot identify a specific cause. These cases may be described as idiopathic AVN.
What Are the Symptoms of Bilateral AVN?
Symptoms can vary between the two hips.
Common symptoms include:
- Hip or groin pain
- Pain while walking or standing
- Pain after physical activity
- Pain spreading toward the thigh or buttock
- Hip stiffness
- Reduced range of motion
- Difficulty walking
- Limping
- Increasing difficulty climbing stairs
Early AVN can sometimes have no symptoms, which is why disease in the second hip can occasionally be discovered during imaging after the first hip is diagnosed.
Can One Hip Have More Severe AVN Than the Other?
Yes.
Both hips may be affected, but the amount of bone damage and stage can be different on each side.
For example:
- Right hip: early AVN without collapse
- Left hip: more advanced AVN with femoral-head collapse
Therefore, treatment should be planned separately for each hip, rather than assuming both hips require the same procedure.
How Is Bilateral AVN Diagnosed?
X-Ray
X-rays are commonly used as an initial imaging test and can show more advanced bone changes. However, early AVN may not be visible on an X-ray.
MRI
MRI is one of the most important tests for bilateral AVN.
It can detect early osteonecrosis before it becomes visible on an X-ray and can help doctors determine the extent of bone involvement.
If AVN is confirmed in one hip, imaging of the opposite hip may be considered based on the clinical situation and risk factors.
CT Scan
CT can provide detailed information about the structure of the bone and may help assess the extent of damage or collapse in selected cases.
Bilateral AVN Treatment
Treatment depends on the stage of each hip, the amount of bone involved and whether collapse has occurred.
Early-Stage Bilateral AVN
If the femoral head has not collapsed, treatment may focus on preserving the natural hip.
Depending on the individual case, options can include:
- Activity modification
- Protected weight-bearing
- Crutches or walking support
- Pain management
- Physiotherapy
- Treatment of underlying risk factors
- Joint-preserving surgery when appropriate
Non-surgical measures can help manage symptoms, but they generally do not cure established osteonecrosis or reliably stop its progression.
Core Decompression
Core decompression is a joint-preserving surgical procedure that may be considered for selected early-stage AVN.
The procedure involves creating channels through the affected bone to reduce pressure and encourage healing. It is generally considered before significant collapse has occurred.
If both hips have early AVN, the orthopedic surgeon may consider a treatment strategy for each hip based on its individual stage and severity.
Advanced Bilateral AVN
When the femoral head has collapsed significantly and the hip joint has become damaged, total hip replacement may be recommended.
Hip replacement removes the damaged portions of the joint and replaces them with artificial components. It is an established treatment for advanced hip osteonecrosis.
Does Bilateral AVN Mean Both Hips Need Replacement?
Not necessarily.
The treatment for each hip depends on its individual condition.
For example:
| Right Hip | Left Hip | Possible Approach |
|---|---|---|
| Early AVN, no collapse | Early AVN, no collapse | Joint-preserving treatment may be considered |
| Early AVN | Advanced AVN with collapse | Different treatment for each hip |
| Advanced AVN | Advanced AVN | Hip replacement may be considered for both |
The final decision depends on imaging, symptoms, lesion size and location, bone collapse and overall health.
Can Bilateral AVN Be Treated Without Surgery?
In selected early cases, doctors may initially use:
- Activity modification
- Protected weight-bearing
- Pain management
- Physiotherapy
These approaches can help manage symptoms and protect the joint, but they are not a guaranteed cure for AVN.
If the disease progresses despite conservative treatment, joint-preserving surgery or joint replacement may become necessary.
Can Both Hip Replacements Be Done at the Same Time?
In selected patients with advanced bilateral hip disease, surgeons may discuss simultaneous bilateral hip replacement. In other situations, the two procedures may be performed separately.
This decision depends on factors such as:
- Overall health
- Age
- Severity of both hips
- Medical conditions
- Surgical risk
- Surgeon and hospital protocols
- Rehabilitation considerations
It should be decided after a detailed orthopedic assessment.
What Happens If Bilateral AVN Is Left Untreated?
AVN can progress from bone damage to femoral-head collapse, followed by loss of joint function and secondary arthritis. Pain may become more severe and can eventually occur even at rest.
Possible consequences include:
- Increasing hip pain
- Difficulty walking
- Limping
- Reduced hip movement
- Difficulty climbing stairs
- Loss of independence in daily activities
- Secondary osteoarthritis
- Need for joint replacement
Early diagnosis can provide more opportunities for joint-preserving treatment.
Can Bilateral AVN Be Prevented?
Not every case can be prevented, particularly when no clear cause is identified.
However, some risk factors can be addressed:
- Avoid excessive alcohol consumption.
- Avoid tobacco use.
- Take corticosteroids only as prescribed.
- Discuss long-term steroid use with your treating doctor.
- Manage underlying medical conditions.
- Seek medical attention after significant hip injuries.
- Do not ignore persistent hip or groin pain.
When Should You See an Orthopedic Doctor?
You should consider an orthopedic evaluation if you have:
- Persistent hip or groin pain
- Pain while walking or standing
- Difficulty walking
- Increasing hip stiffness
- Reduced range of motion
- A history of long-term steroid use
- Previous hip fracture or dislocation
- A known diagnosis of AVN in one hip
- Risk factors for AVN with unexplained hip pain
If AVN has already been diagnosed in one hip, discussing the possibility of disease in the opposite hip with your orthopedic specialist may be appropriate.
Expert Opinion
According to Dr. Yugal Karkhur, a Best Orthopedic Doctor in Gurgaon, bilateral AVN requires careful evaluation of both hips, because the disease stage may not be identical on each side.
The priority is to determine whether the femoral head has collapsed. When AVN is identified before significant collapse, selected patients may have joint-preserving options. If advanced AVN has already caused substantial collapse and joint damage, hip replacement may provide more reliable pain relief and functional improvement.
Related Services
- Knee Replacement
- Hip Replacement
- ACL Reconstruction
- Meniscus Repair
- Carpal Tunnel Surgery
- Partial Knee Replacement
- Knee Arthroscopic Surgery
- AVN Treatment
Related Articles
- AVN (Avascular Necrosis): Causes, Symptoms, Stages & Treatment
- Why Did I Get AVN? Causes and Risk Factors of Avascular Necrosis
- Is AVN Dangerous or Serious? What Happens If AVN Gets Worse?
- Is AVN Curable? Can Avascular Necrosis Be Treated Without Surgery?
- Can AVN Affect Young People? Causes, Symptoms & Treatment
Conclusion
Yes, AVN can affect both hips. Bilateral AVN is particularly important to evaluate carefully because both hips may be affected while being at different stages of disease.
MRI can help identify early AVN and determine the extent of bone damage. Early-stage disease may offer an opportunity for joint-preserving treatment, while advanced AVN with femoral-head collapse may require total hip replacement.
If you are looking for a Best Orthopedic Doctor in Gurgaon, Dr. Yugal Karkhur can evaluate both hips, assess the stage of AVN and help determine an appropriate treatment approach.
FAQs
Can AVN affect both hips at the same time?
Yes. AVN can affect both hip joints, particularly when it is associated with systemic or non-traumatic risk factors.
If AVN is found in one hip, can it affect the other hip?
Yes. The opposite hip can also develop AVN. Depending on your risk factors and symptoms, your doctor may recommend imaging to assess the other hip.
Is bilateral AVN more serious than AVN in one hip?
It can have a greater impact on mobility because both hips are affected, but seriousness depends mainly on the stage, size and location of the AVN and whether either femoral head has collapsed.
Can bilateral AVN be treated without hip replacement?
Early-stage AVN may sometimes be managed with conservative measures or joint-preserving procedures. Advanced disease with significant collapse may require hip replacement.
Does bilateral AVN always require two hip replacements?
No. Each hip should be assessed separately. One hip may be suitable for joint-preserving treatment while the other may require replacement.
Is MRI necessary for bilateral AVN?
MRI is highly sensitive for early osteonecrosis and can show the extent of bone damage even when an X-ray is normal.
Can both hips be replaced at the same time?
In selected patients, simultaneous bilateral hip replacement may be considered, while others may undergo the procedures separately. The safest approach depends on individual health and surgical assessment.
Can bilateral AVN be cured completely?
There is no guaranteed cure for established AVN. Small early lesions may sometimes heal or remain stable, while advanced disease with collapse generally requires surgical treatment.
