What is hip arthritis?
Hip arthritis refers to the degeneration or inflammation of the cartilage lining the hip joint, resulting in pain, stiffness, and reduced mobility. The hip is a ball-and-socket joint formed by the head of the femur (thigh bone) and the acetabulum (socket) of the pelvis. In a healthy joint, these surfaces are covered with smooth articular cartilage, which allows the bones to move freely with minimal friction while absorbing the forces generated during movement.
In arthritis, this protective cartilage gradually wears down or becomes damaged. As the cartilage deteriorates, the underlying bone becomes exposed, leading to increased friction, inflammation, and joint stiffness. Over time, structural changes such as bone spurs (osteophytes), joint space narrowing, and alterations in joint shape can occur, further limiting movement and contributing to pain.
Causes
The most common cause of arthritis is osteoarthritis, which develops over time due to aging, repeated stress on the joint, excess body weight, or previous injuries. Other causes include rheumatoid arthritis, an autoimmune disease that leads to joint inflammation, and conditions such as hip dysplasia or avascular necrosis, where poor blood supply damages bone tissue. As the cartilage deteriorates, inflammation, stiffness, pain, and reduced movement occur, making everyday activities such as walking, bending, or climbing stairs increasingly difficult.
Symptoms
Symptoms of hip arthritis typically develop gradually and may worsen over time.
Common symptoms include:
- Pain: in the groin, which is the most characteristic location, although pain may also be felt in the outer hip, buttock, or down the thigh toward the knee.
- Stiffness: Stiffness, particularly after periods of rest or in the morning.
- Difficulty: Difficulty with activities that involve hip movement, such as walking, climbing stairs, bending, or putting on shoes and socks.
- Range of motion: Reduced range of motion, making it harder to rotate or fully extend the hip.
- Limp: A limp or altered walking pattern due to pain and stiffness.
- Clicking: Occasional clicking or grinding sensations within the joint.
As the condition progresses, pain may become more persistent and can interfere with sleep and routine daily activities.
Diagnosis
Your surgeon will take a detailed medical history and physical examination. Patients are typically asked about the location and nature of their pain, stiffness, walking difficulties, limitations in daily activities, and any previous injuries or medical conditions that may contribute to joint disease.
During the physical examination, the doctor assesses hip movement, strength, gait, and signs of pain or stiffness, particularly during rotation and weight-bearing movements.
Blood tests may occasionally be performed to help exclude inflammatory or infectious causes of hip pain, such as rheumatoid arthritis or joint infection. In selected cases, aspiration of joint fluid may also be required if infection or inflammatory arthritis is suspected. The diagnosis is made by combining the patient’s symptoms, examination findings, and imaging results.
Imaging
Imaging plays an important role in confirming the diagnosis. X-rays are usually the first-line investigation and can show characteristic changes such as joint space narrowing, bone spurs (osteophytes), cyst formation, and changes in bone shape or alignment. In some cases, additional imaging such as MRI or CT scans may be used to assess cartilage damage, surrounding soft tissues, or more complex joint abnormalities.
Treatment
Management of hip arthritis depends on the severity of symptoms and their impact on daily life. Initial treatment is usually non-surgical and aims to reduce pain, maintain joint function, and improve quality of life.
Conservative (non-operative)
Common conservative treatment options for hip conditions include physiotherapy with targeted exercises to improve hip strength, flexibility, and joint stability, as well as activity modification to reduce high-impact activities and incorporate lower-impact exercises such as swimming or cycling. Weight management can also play an important role, as reducing body weight may decrease the load on the hip joint and improve symptoms. Medications such as nonsteroidal anti-inflammatory drugs (NSAIDs) or other pain-relieving medications may help manage pain and inflammation. In some cases, walking aids such as a cane or walking stick can reduce stress on the affected hip, while corticosteroid injections may provide temporary relief of pain and inflammation in selected patients.
Surgical Treatment
When conservative treatments no longer provide adequate relief and symptoms significantly impact quality of life, surgical intervention may be considered.
The most common and effective surgical option is total hip replacement. This procedure involves removing the damaged cartilage and bone from the hip joint and replacing them with artificial components that replicate the function of a healthy joint. The prosthetic joint typically consists of a metal or ceramic ball attached to a stem inserted into the femur, and a socket component placed within the pelvis.
In selected cases, other procedures such as hip resurfacing or osteotomy may be considered, particularly in younger patients, although these are less commonly performed.
Recovery
Total hip replacement is a highly successful procedure, with most patients experiencing significant pain relief, improved mobility, and a return to many daily activities. Recovery involves a structured rehabilitation program focusing on restoring strength, flexibility, and walking ability.