Hip Replacement vs Knee Replacement: Which Joint Surgery Do You Need?

What is the difference between hip and knee replacement surgery?

Hip replacement removes and replaces a damaged hip joint with an artificial implant, while knee replacement resurfaces or replaces the worn knee joint. The surgery you need depends on which joint is causing pain, functional loss, and imaging-confirmed damage. S.L. Raheja Hospital in Mumbai provides orthopaedic evaluation to determine the appropriate joint replacement procedure for each patient.

What are the signs that you need joint replacement surgery?

Joint replacement is generally considered when conservative treatments — physiotherapy, pain medication, and lifestyle changes — no longer provide adequate relief. The following signs, persisting for more than three months despite non-surgical management, warrant an orthopaedic consultation.

Signs you may need hip replacement:

• Persistent groin, thigh, or buttock pain that limits walking to short distances
• Pain that wakes you from sleep
• Stiffness that makes it difficult to put on shoes or socks
• A noticeable limp that does not improve with rest
• X-ray or MRI evidence of severe cartilage loss or avascular necrosis

Signs you may need knee replacement:

• Knee pain that persists at rest or at night
• Chronic swelling that does not respond to medication or ice
• Bowing of the leg (varus or valgus deformity)
• Inability to fully straighten or bend the knee
• Significant reduction in daily activities such as climbing stairs or walking more than a short distance

Which surgery is easier, and which has a faster recovery — hip or knee replacement?

Both procedures are major orthopaedic surgeries with comparable safety profiles. However, there are clinically recognised differences in the recovery experience.

• Hip replacement is generally associated with an earlier return to walking — many patients take a few steps within 24 hours of surgery. The main precaution is avoiding certain hip positions (deep flexion, crossing legs) for several weeks to prevent dislocation.
• Knee replacement typically involves a more demanding rehabilitation phase. Regaining full range of motion requires consistent physiotherapy, and patients often report that the knee takes longer to feel natural than the hip.
• Pain in the early post-operative period is reported as more intense after knee replacement by many patients, though this varies by individual and surgical technique.
• Both surgeries aim to restore functional independence; full recovery to low-impact activities such as walking and swimming generally takes three to six months for either joint.

How do I know if I need a hip or knee replacement?

The decision is based on a combination of clinical assessment, imaging findings, and the degree to which joint damage affects your quality of life. No patient should self-diagnose — the steps below describe how an orthopaedic specialist reaches a recommendation.

1. Symptom mapping: The surgeon identifies where pain originates. Groin or lateral hip pain points to the hip joint; pain centred on the knee points to the knee.
2. Physical examination: Range of motion, gait analysis, and joint stability tests help isolate the affected joint.
3. Imaging: Weight-bearing X-rays are the standard first step. MRI or CT scans may be ordered to assess cartilage, bone quality, and surrounding soft tissue.
4. Functional scoring: Validated tools such as the WOMAC or Oxford Joint Score quantify how much the joint limits daily activities.
5. Trial of conservative treatment: Surgery is recommended only after physiotherapy, weight management, and medication have been given an adequate trial — typically three to six months.
6. Surgical planning: If both joints are affected, the surgeon determines which is causing greater functional impairment and addresses that joint first.

For patients with diabetes or other metabolic conditions, pre-operative optimisation of blood sugar and overall health is an important part of surgical planning.

When should you see an orthopaedic surgeon about joint pain?

Seek an orthopaedic consultation promptly if you experience any of the following:

• Joint pain that has persisted for more than 12 weeks despite rest, physiotherapy, or over-the-counter pain relief
• Pain severe enough to interrupt sleep on more than three nights per week
• Inability to walk more than 500 metres without stopping due to joint pain
• Visible joint deformity or a leg that appears shorter than the other
• A hip fracture or significant trauma to the joint — this requires urgent evaluation
• Progressive loss of independence in daily tasks such as bathing, dressing, or climbing stairs

Early consultation allows the surgeon to explore non-surgical options first and plan surgery at an optimal time — before muscle weakness and bone loss make the procedure more complex. Patients with blood disorders or conditions requiring haematology support should inform their orthopaedic team, as pre-operative blood management may be necessary.

How does S.L. Raheja Hospital in Mumbai support patients needing joint replacement?

S.L. Raheja Hospital, located at Mahim West, Mumbai, provides orthopaedic assessment and joint replacement services supported by a multidisciplinary team. Patients with complex medical histories — including those requiring endocrinology input for hormonal or metabolic conditions — benefit from coordinated pre- and post-operative care across specialities.

The hospital's gastroenterology and internal medicine teams support patients who require optimisation of overall health before major orthopaedic surgery. For patients with gastrointestinal concerns that may affect medication tolerance or nutrition during recovery, the gastro-intestinal science team is available for consultation.

To find out whether hip or knee replacement is appropriate for your condition, use the booking form on this page to request an orthopaedic consultation, or contact the hospital directly at info@rahejahospital.com.