Authored by Ashitha Abdul Ashraf, Senior Consultant Physiotherapist – Incharge | Medically Reviewed by Dilshana Thasni T, Senior Consultant Physiotherapist | Last Reviewed: June 2026
Hip replacement surgery is one of the most commonly performed orthopaedic procedures in Kerala. It has a strong track record for severe hip arthritis and the right patients do very well. But a significant proportion of people who have hip replacement surgery did not need it — not yet, and possibly not ever.
The problem is that hip osteoarthritis is systematically undertreated conservatively. Patients receive painkillers, are told to lose weight, and are put on a waiting list. A structured physiotherapy program — the most evidence-based conservative treatment for hip OA — is rarely prescribed properly before the surgical conversation begins.
This guide covers what hip osteoarthritis is, who can avoid surgery with physiotherapy, and what conservative treatment actually involves when done correctly.
What Is Hip Osteoarthritis?
Hip osteoarthritis is degeneration of the cartilage covering the ball and socket of the hip joint. As cartilage wears down, the joint loses its smooth gliding surface. Bone contacts bone under load, producing pain, stiffness, and progressive functional loss.
The hip is a ball-and-socket joint — the femoral head (ball) sits in the acetabulum (socket) of the pelvis. In a healthy hip, 2 to 4 mm of cartilage on each surface allows virtually frictionless movement. As OA progresses, this cartilage thins and eventually disappears.
Risk factors for hip OA in Kerala:
Age. Most common after 55. Prevalence increases sharply with age.
Previous hip injury. Fractures, dislocations, and labral tears accelerate OA development.
Developmental hip problems. Hip dysplasia — a shallow acetabulum — and femoroacetabular impingement (FAI) — abnormal bone shape at the hip joint — create abnormal contact stress that accelerates cartilage wear decades before OA symptoms develop.
Obesity. Every kilogram of excess body weight increases hip joint loading. The relationship between obesity and hip OA is strong, though less direct than for knee OA.
Occupation. Jobs involving heavy lifting, prolonged standing, or repetitive hip loading increase risk.
Genetics. Family history of hip OA is a significant risk factor.
How Hip OA Differs from Knee OA
Both are degenerative joint conditions but they behave differently and require different treatment emphasis.
Hip OA typically presents with:
- Groin pain — the primary location of true hip joint pain is the groin, not the lateral hip or buttock
- Stiffness that is most pronounced in the morning and after sitting
- Reduced range of motion — particularly internal rotation and hip flexion
- Referred pain to the thigh, knee, or buttock — hip pain frequently masquerades as knee pain
- An antalgic gait — a shortened stance phase on the affected side to reduce hip loading time
Lateral hip pain — pain on the outside of the hip — is more commonly gluteal tendinopathy or trochanteric bursitis than true hip OA. The distinction matters because the treatment is different.
If your hip pain is primarily on the outer side and worsens with lying on that side, crossing your legs, or climbing stairs, gluteal tendinopathy is more likely than hip OA. A physiotherapy assessment determines the correct diagnosis.
The Four Stages of Hip Osteoarthritis
Stage 1: Minor
Minimal cartilage loss on X-ray. Joint space appears normal or near-normal. Osteophytes are minimal.
Symptoms: Mild groin aching after activity. Mild morning stiffness. Many patients are asymptomatic at this stage.
Treatment priority: This is the most important stage to intervene. Strengthening the hip musculature, maintaining range of motion, and managing weight can significantly slow or halt progression. The tragedy is that most patients do nothing at stage 1 because the symptoms are manageable.
Stage 2: Mild
Visible cartilage thinning. Joint space narrowing beginning. Osteophytes forming.
Symptoms: Pain with walking, particularly on uneven ground. Morning stiffness lasting 15 to 30 minutes. Difficulty with hip internal rotation — putting on shoes and socks becomes harder. Mild limp.
Treatment priority: Physiotherapy produces very good outcomes at this stage. Patients who commit to a structured program frequently manage stage 2 hip OA effectively for years without surgical intervention.
Stage 3: Moderate
Significant cartilage loss. Joint space notably narrowed. Larger osteophytes. Some subchondral bone changes.
Symptoms: Pain during most weight-bearing activity. Significant morning stiffness. Reduced walking distance. Difficulty with stairs, dressing, and getting in and out of a car. Visible limp.
Treatment priority: Conservative treatment is still appropriate and effective for many stage 3 patients. Physiotherapy, activity modification, pain management, and weight reduction. Surgery becomes a genuine consideration when conservative management fails to maintain adequate quality of life.
Stage 4: Severe
Cartilage largely or completely absent. Bone-on-bone contact. Significant deformity and joint space loss visible on X-ray.
Symptoms: Constant pain. Severely limited walking distance. Significant functional loss. Pain at rest and at night. Hip deformity.
Treatment priority: At true stage 4 with complete cartilage loss, hip replacement is appropriate. Conservative management manages symptoms but cannot restore adequate function when the joint surface is destroyed. The decision for surgery should be driven by functional limitation and quality of life, not X-ray grade alone.
The Evidence for Physiotherapy in Hip OA
The evidence base for physiotherapy in hip OA is strong and consistent.
A Cochrane systematic review of exercise therapy for hip osteoarthritis found significant improvement in pain and function with exercise therapy compared to minimal intervention. The effect sizes are clinically meaningful — not marginal.
The NICE guidelines in the United Kingdom — among the most rigorously evidence-based clinical guidelines in the world — recommend exercise therapy as a core treatment for hip OA at all stages, before consideration of surgery.
A Norwegian randomised controlled trial found that a structured exercise therapy program for hip OA patients on the surgical waiting list produced significant functional improvement — and that a proportion of patients who completed the exercise program chose to defer surgery because their function had improved sufficiently.
The evidence is clear. Exercise therapy works for hip OA. The problem is that most patients never receive it properly.
What Physiotherapy for Hip OA Actually Involves
Generic advice to “stay active” or “do some exercises” is not physiotherapy. A proper program is specific, progressive, and supervised.
Hip and Gluteal Strengthening
Weakness of the hip abductors — the gluteus medius and minimus — is consistently present in hip OA patients and directly increases joint loading during walking. Every step taken with weak hip abductors produces an increased compressive force through the arthritic hip. Strengthening these muscles reduces pain and improves function by reducing joint load.
Key exercises: side-lying hip abduction, clamshells, single-leg stance progressions, lateral band walks, and hip hinge movements.
Quadriceps and Hip Extensor Strengthening
Hip extension weakness alters gait mechanics and increases anterior hip joint loading. Quadriceps strength reduces the overall compressive demands on the lower limb. Both are targets in hip OA rehabilitation.
Key exercises: sit-to-stand practice, step-ups, mini squats, and leg press as tolerated.
Hip Mobility and Range of Motion Exercises
Maintaining hip range of motion prevents the adaptive shortening and capsular tightening that accelerates functional decline in hip OA. Manual therapy from the physiotherapist — joint mobilisation of the hip — combined with active and passive stretching maintains range in the directions typically lost first: internal rotation and hip flexion.
Gait Retraining
Hip OA produces an antalgic gait — shortened stance phase, reduced stride length, increased trunk lean toward the affected side. Over time, compensatory gait patterns load other joints — the contralateral hip, the lumbar spine, and the knees — producing secondary pain.
Gait retraining as part of a physiotherapy program corrects these compensatory patterns, reduces secondary pain, and improves overall function.
Hydrotherapy
For patients with significant pain who cannot tolerate land-based exercise initially, hydrotherapy provides a low-load environment for progressive hip strengthening and mobility work. The buoyancy of water reduces effective body weight substantially — allowing movement and exercise that would be too painful on land.
As pain and strength improve, patients transition to land-based exercise while retaining hydrotherapy as a complementary modality.
Weight Management
The relationship between body weight and hip OA is significant. Weight reduction — even modest amounts — reduces hip joint loading and slows cartilage degeneration. For overweight patients with hip OA, dietary management combined with aquatic or low-impact exercise produces meaningful pain reduction through load reduction alone.
When Surgery Is Genuinely Necessary
Physiotherapy is not a treatment for every stage of hip OA. There are situations where surgery is the right choice.
True stage 4 OA with complete cartilage loss and severe functional limitation. When bone is rubbing directly on bone and the patient cannot walk more than minimal distances, conservative management cannot restore adequate function. Hip replacement is appropriate.
Failed conservative treatment. If a genuine 12-week structured physiotherapy program, weight management, and activity modification have not produced adequate improvement in pain and function, surgery is a reasonable next step.
Avascular necrosis. When the blood supply to the femoral head is disrupted — from steroid use, alcohol, or other causes — bone death occurs regardless of cartilage status. This often requires surgical intervention.
Rapidly progressive OA with accelerating functional loss. Some cases progress faster than typical. If function is deteriorating rapidly despite conservative management, earlier surgical consideration is appropriate.
Frequently Asked Questions
My X-ray shows severe arthritis but I am not in much pain. Do I need surgery?
X-ray grade does not determine surgical need. Many patients have significant radiographic OA with surprisingly minimal symptoms. Surgery is indicated by functional limitation and quality of life impact — not by X-ray appearance alone. If you are functioning adequately, surgery is not indicated regardless of the X-ray.
Will exercise damage my arthritic hip?
No. This is one of the most harmful myths about osteoarthritis. Exercise does not accelerate cartilage breakdown in OA. Sedentary behaviour does — by weakening the muscles that protect the joint and reducing the synovial fluid circulation that nourishes cartilage. Appropriate exercise is beneficial at all stages of hip OA.
Can I avoid hip replacement completely?
Some patients do — particularly those who intervene early, commit to exercise therapy consistently, manage their weight, and modify their activities appropriately. Others will eventually need surgery as OA progresses. The goal of conservative management is not necessarily to avoid surgery permanently but to delay it as long as possible, maximise function in the meantime, and ensure that surgery only happens when it is genuinely necessary.
How long does physiotherapy take for hip OA?
A structured initial program runs 8 to 12 weeks. Ongoing maintenance exercise — typically two to three sessions per week — is needed long-term to maintain the benefits. Hip OA is a chronic condition. It requires ongoing management, not a finite course of treatment.
Is walking enough exercise for hip OA?
Walking is beneficial but not sufficient as the only exercise for hip OA. It provides aerobic conditioning and maintains some hip movement but does not address the specific muscle weakness — particularly hip abductors and extensors — that drives joint loading and functional decline. Walking combined with a targeted strengthening program produces significantly better outcomes than walking alone.
Maana Health treats hip osteoarthritis at all stages across five clinics in Kerala — Kochi, Calicut, Perinthalmanna, Aluva, and Trivandrum. If you have been told you need a hip replacement and want to know whether conservative treatment is worth trying first, book a free assessment with our senior physiotherapists.