Can Perthes Disease Cause Hip or Knee Pain in Children?

When a child develops hip or knee pain without an obvious injury, parents may naturally wonder what is causing it. One possible cause is Perthes disease, a childhood hip condition that affects the blood supply to the head of the thigh bone. Although the problem starts in the hip, the pain may sometimes be felt in the knee.

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Understanding the symptoms can help parents seek timely medical advice. At Little Bones, the focus is on helping children receive appropriate evaluation and care for musculoskeletal conditions. If your child has persistent hip, thigh, or knee pain, discussing the symptoms with a pediatric orthopedic specialist can be an important first step toward appropriate Perthes Disease Treatment in Noida.

What Is Perthes Disease?

Perthes disease, also called Legg-Calvé-Perthes disease, is a condition in which the blood supply to the femoral head is temporarily reduced. The femoral head is the rounded upper end of the thigh bone that fits into the hip socket.

Reduced blood flow can cause the bone tissue to weaken. Over time, the body works to restore blood supply and repair the affected bone.

The condition usually develops during childhood. Its symptoms can vary from one child to another, which is why early assessment is important when pain or changes in walking continue.

Can Perthes Disease Cause Hip Pain?

Yes. Hip pain is one of the possible symptoms of Perthes disease. A child may complain of discomfort around the hip or groin, particularly after physical activity.

Some children may not describe the pain clearly. Younger children may simply avoid activities, walk differently, or appear uncomfortable when moving the affected leg.

Pain can also come and go. A child might seem better after resting but develop discomfort again after running, playing, or other activities.

According to Little Bones, parents should pay attention to recurring symptoms rather than assuming that occasional pain is always related to growing or physical activity.

Why Can Knee Pain Occur?

One of the confusing features of Perthes disease is that a child may experience referred pain in the knee even though the underlying problem is in the hip.

The nerves around the hip and knee share some pathways. As a result, the brain may interpret pain originating from the hip as discomfort in the knee.

This means a child who repeatedly complains about knee pain may actually need an assessment of the hip as well.

Knee Pain Should Not Always Be Treated as a Knee Problem

If knee pain keeps returning without a clear injury, parents should not focus only on the knee. A doctor may examine the child’s hip movement, walking pattern, leg length and other physical signs to determine whether the pain could be coming from the hip.

This is particularly important when knee discomfort occurs alongside limping, reduced hip movement, or difficulty participating in normal activities.

Other Signs Parents May Notice

Pain is not the only possible sign of Perthes disease. Depending on the child and stage of the condition, parents may notice:

• Limping while walking
• Pain in the hip, thigh or knee
• Reduced movement of the hip
• Difficulty running or playing
• Stiffness around the hip
• Avoiding certain physical activities
• Changes in the way the child walks

Not every child will experience all these symptoms. Some symptoms may also resemble those of other childhood hip or leg conditions.

For this reason, persistent symptoms should be evaluated rather than diagnosed at home.

How Is Perthes Disease Diagnosed?

A pediatric orthopedic evaluation generally begins with a discussion about the child’s symptoms and a physical examination.

The doctor may check:

• How the child walks
• Movement of the hip
• Areas of pain or tenderness
• Leg movement
• Whether there is a difference in leg length
• The child’s overall physical function

Imaging, particularly X-rays of the hip, may be recommended to look for changes in the femoral head. In some situations, additional imaging may be considered depending on the clinical findings.

An accurate diagnosis helps the doctor understand the condition and decide whether observation, activity modification, physiotherapy or other treatment may be appropriate.

What Does Perthes Disease Treatment Involve?

Treatment depends on several factors, including the child’s age, symptoms, stage of the disease and how much the hip is affected.

The overall aim is to protect hip movement and help the hip develop as normally as possible while the condition progresses through its natural stages.

Depending on the individual case, management may include:

Activity Modification

High-impact activities may need to be reduced if they increase pain or place excessive stress on the hip.

Physiotherapy

Specific exercises may help maintain hip flexibility and movement. A physiotherapist can recommend exercises according to the child’s needs.

Regular Monitoring

Some children require periodic clinical examinations and imaging to monitor changes in the hip over time.

Surgical Treatment

In selected cases, surgery may be considered when maintaining the position and movement of the femoral head requires additional intervention. The appropriate approach depends on the child’s individual condition.

Therefore, Perthes Disease Treatment in Noida should always be planned after a proper examination rather than based only on symptoms.

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When Should Parents Consult a Doctor?

Parents should consider medical evaluation if a child develops persistent or recurring hip, thigh, or knee pain, particularly when there is no obvious injury.

A consultation is especially important if the child:

• Has a persistent limp
• Stops participating in normal activities
• Has difficulty moving the hip
• Frequently complains of knee pain without an obvious cause
• Develops recurring pain after physical activity
• Shows a noticeable change in walking

Early assessment can help identify the cause and determine whether further investigation is needed.

Conclusion

Perthes disease can cause hip pain as well as referred knee pain in children. Because the source of the problem is the hip, recurring knee pain should not always be assumed to be a knee condition. Limping, stiffness and reduced hip movement can provide additional clues.

If your child has ongoing hip, thigh or knee discomfort, a pediatric orthopedic evaluation can help identify the underlying cause. At Little Bones, appropriate assessment is an important part of planning Perthes Disease Treatment in Noida based on each child’s individual needs.

Little Bones encourages parents to seek professional advice when a child’s pain keeps returning or begins to affect walking, play, or everyday activities. Timely evaluation can help ensure that the child receives suitable care and monitoring.