Osteonecrosis of the hip is literally the death of bone tissue in the femoral head due to lack of blood supply, which can cause progressive pain and limited mobility if not detected early.
What is osteonecrosis of the hip and why does it occur?
Also known as avascular necrosis of the hip, this is a disease that affects the upper end of the femur, which fits into the pelvis to form the hip joint. It occurs due to an interruption of blood flow, which progressively weakens the bone and can eventually alter its shape.
What happens when there is insufficient blood flow to the femoral head?
The femoral head relies on a fairly limited blood supply, as this explains. Review on avascular necrosis of the femoral head. When that area is damaged, the bone loses its ability to regenerate normally and can become chronically damaged.
This process is usually silent at first, making it difficult to detect before obvious symptoms appear.
What factors increase the risk of avascular necrosis of the hip?
Factors that increase the risk of avascular necrosis include hip fractures and dislocations that damage the blood vessels that supply the femoral head. Osteonecrosis has also been linked to prolonged use of corticosteroids, excessive alcohol consumption, and some blood disorders.
Medical information from Mayo Clinic on avascular necrosis It elaborates on these factors and explains that the deterioration can evolve over months or years.
What symptoms does osteonecrosis of the hip cause?
In its early stages, osteonecrosis is usually painless, which means it often goes unnoticed for quite some time. As it progresses, the pain becomes more constant and begins to interfere with everyday activities such as walking or standing.
How does hip pain from osteonecrosis begin in its early stages?
Hip pain from osteonecrosis manifests progressively in the groin area At first, it may be mistaken for a passing muscle ache. Over the weeks, the pain tends to intensify, especially when putting weight on the affected leg.
What signs indicate that the hip joint is getting worse?
As the disease progresses, stiffness and limited hip rotation become apparent, indicating that the joint is deteriorating. Limping may also develop, especially after prolonged periods of standing or walking long distances.
Why groin pain can be an important clue
Pain localized in the groin is the most characteristic sign of osteonecrosis of the hip and is usually the first reason for consultation since detecting it in time allows for an investigation to begin before major structural damage occurs.
How is osteonecrosis of the hip diagnosed?
The diagnosis begins by reviewing the medical history, including examinations of mobility, pain, and gait. It is also important to know about any previous injuries, corticosteroid treatments, and illnesses.
Which imaging tests detect femoral head necrosis earliest
To detect frontal head necrosis, X-rays are key as they allow observation of changes in bone structure and the detection of possible femoral head collapse. However, if the examination is performed in the early stages, the tests may appear normal, leading to a missed diagnosis.
Magnetic resonance imaging is the most sensitive test for detecting early changes., even before they are visible on an X-ray. National Institute of Arthritis and Musculoskeletal Diseases of the United States It also highlights the importance of its usefulness in assessing the extent of the damage.
How is the degree of damage to the hip joint assessed?
To assess the extent of damage to the hip joint, the specialist examines its size and checks if the bone surface retains its shape. The condition of the cartilage and the presence of osteoarthritis are also checked.
This information allows osteonecrosis to be classified by stage and the appropriate treatment to be chosen. Hip Unit of Elgeadi Clinic It addresses the diagnosis and treatment of avascular necrosis and other pathologies that affect this joint.
When to consult a hip specialist orthopedic surgeon
A specialist should be consulted if groin pain persists and does not improve with rest, especially if there was prolonged use of corticosteroids., It is advisable to consult as soon as possible.
The team of Hip traumatology at Clínica Elgeadi These cases are evaluated to determine the stage of the disease and the available treatment options.
What treatments are available for osteonecrosis of the hip?
Treatment will depend primarily on the stage of the disease and how much of the femoral head is affected. In the early stages, the goal is to preserve the joint, while in advanced stages, surgery is usually necessary.
When can osteonecrosis be treated without a hip replacement?
In early stages, when bone damage is still minimal, conservative treatments or techniques such as core decompression can be considered, which aim to relieve internal pressure and promote bone repair.
Physiotherapy, with controlled mobility exercises, is also part of the initial approach in these cases, since it is very effective in all types of patients.
When might hip surgery or a prosthesis be necessary?
Surgery is considered necessary when the femoral head has already collapsed or the joint damage is extensive. In these cases, a hip replacement is usually the most effective option for restoring function and permanently relieving pain.
In Elgeadi Clinic The use of minimally invasive surgical techniques is prioritized, seeking a more favorable recovery than that of a conventional approach.
