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AVN(Avascular Necrosis Hip)

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Avascular Necrosis Hip

Avascular necrosis (AVN), also known as osteonecrosis, is the death of bone tissue caused by a disruption of blood flow within a bone. The condition usually affects the ends of bones where they terminate in a joint. Though AVN can occur in the ankle, elbow, shoulder, and jaw, it most commonly affects the hip joint. AVN hip of femoral head is a type of osteonecrosis due to disruption of Blood Supply to the proximal femur.

Blood Supply of Head Femur

  • Medial and leteral circumflex Branches of the profunda femoris which is the deep penetrating branch of upper thigh.
  • Foveal Artery, also known as the Artery of ligamentum teres – its contribution is significant in pediatric population.

Symptoms

  • Patient is Asymptomatic early in process.
  • Later hip pain radiating to groin and thigh.
  • Pain typically Aggravated by activities such as walking, climbimg Stairs and reduced by rest.
  • Sometimes pain present at rest also.

Stages of Diseases

  • Initial- Reversible.
  • Fragmentation- body Resorbs the Necrotic Bone and Relace with woven bone.
  • Reossification- once blood supply is revived we can see reformation.
  • Healed –Remodeling.

Treatment with PFST

Piezo-focused shockwave therapy (PFST) is a non-invasive treatment option that uses high-energy sound waves to target specific areas of the body. When used in the treatment of avascular necrosis (AVN) of the hip joint, PFST offers several potential benefits:

  1. Pain Reduction
  • Shockwave therapy can help reduce pain in patients with AVN by stimulating healing processes and improving blood circulation in the affected area. It has been shown to reduce inflammation and discomfort associated with joint degeneration, which is a primary symptom of AVN. 
  1. Improved Blood Circulation
  • Avascular necrosis involves the death of bone tissue due to a lack of blood supply. PFST can promote angiogenesis (formation of new blood vessels) in the treated area. This increased circulation helps restore oxygen and nutrients to the affected bone, potentially slowing or halting the progression of AVN.
  1. Stimulation of Bone Healing
  • Shockwave therapy has been demonstrated to stimulate osteogenesis, the process by which bone tissue forms. By promoting the activation of bone-forming cells (osteoblasts), PFST may assist in the repair of damaged bone tissue in cases of AVN, which could potentially slow the disease’s progression or help with recovery.
  1. Non-Invasive Treatment
  • One of the main advantages of PFST is that it is a non-invasive option compared to traditional surgical approaches. For patients with AVN who may not be candidates for surgery or want to avoid more invasive treatments, PFST offers a promising alternative without the need for hospitalization or recovery time.
  1. Reduced Need for Medication
  • PFST can decrease pain and improve function, potentially reducing the need for pain medications or anti-inflammatory drugs. This can be particularly beneficial for those who have concerns about long-term medication use or its side effects.
  1. Faster Recovery Time
  • Since PFST is non-invasive, the recovery time is generally quicker compared to more invasive procedures like surgery. Patients typically experience less downtime, and the treatment can be performed on an outpatient basis.
  1. Potential to Delay or Prevent Surgery
  • By improving blood flow and stimulating healing in the affected bone, PFST may help delay or even prevent the need for more invasive interventions, such as hip replacement surgery. This is particularly valuable in early stages of AVN, where joint preservation is still possible.
  1. Safety Profile
  • Piezo-focused shockwave therapy has a favorable safety profile when applied properly. Most patients experience only mild, transient side effects such as redness or mild soreness at the treatment site, making it a relatively safe option for many individuals.
  1. Improved Joint Function
  • As the therapy works to reduce pain and improve blood circulation, patients may experience improved hip joint function. This can translate into better mobility, a greater range of motion, and a reduction in the limitations caused by AVN in everyday activities.
  1. Reduced Need for Long-Term Rehabilitation
  • Compared to more invasive treatments like surgery, PFST typically involves shorter periods of rehabilitation. This can lead to faster improvements in mobility and function, without the need for prolonged physical therapy.
piezo-focused shockwave therapy can offer numerous benefits in the treatment of avascular necrosis of the hip joint, including pain reduction, improved healing, and enhanced joint function, while being non-invasive and with fewer side effects compared to traditional methods.
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