Total knee replacement in Lucknow: when is it actually necessary?

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Frequently asked questions about total knee replacement in Lucknow

Candidacy, alternatives, recovery, and cost.

• Is total knee replacement a major surgery?

  Yes. Total knee replacement is a significant surgical procedure under anaesthesia, involving bone resurfacing and implant placement. It requires hospital admission of 3 to 5 days, 6 to 12 weeks of physiotherapy, and full recovery over 3 to 12 months. However, it is one of the most standardised and widely performed elective surgeries in the world, with well-established safety protocols and a 90 to 95% patient satisfaction rate in appropriately selected patients.

• What is the hardest part of total knee replacement recovery?

  The first 2 to 4 weeks are the most demanding. Pain and swelling are at their highest, sleep is often disrupted, and the exercises required for a good outcome are uncomfortable to do. The difficulty is that this is also the most critical window for regaining range of motion: weeks 0 to 6 offer the best opportunity to recover knee bend, and patients who rest too much during this period often end up with permanently limited motion. The hard truth is that pushing through the early discomfort, with proper pain management, is what produces the best long-term outcome.

• Can I sit cross-legged after knee replacement?

  Sitting cross-legged is generally not recommended after total knee replacement, particularly in the first 3 to 6 months. The crossed-leg position requires significant internal rotation and flexion of the knee, which can stress the implant components and, in the early recovery period, risk dislocation or implant loosening. After full recovery, some patients can manage this position with care, but it is not standard medical advice to routinely sit cross-legged with a knee replacement. Dr. R.P. Singh will advise at your follow-up consultations.

• Can I use an Indian toilet after knee replacement?

  Indian-style squatting toilets require deep knee flexion beyond 120 degrees and are generally not recommended after total knee replacement, especially in the first 6 months. Dr. R.P. Singh advises all TKR patients to use a raised western-style toilet seat. This reduces the risk of implant stress during deep flexion and protects the long-term integrity of the knee components. Arranging a western commode at home before surgery is strongly recommended.

• When can I sleep on my side after knee replacement?

  Most patients can sleep on their side with a pillow between their knees from approximately 6 weeks after surgery, once wound healing is complete and the knee has sufficient stability. In the first few weeks, sleeping on your back with the leg elevated is preferred to reduce swelling and maintain a straight knee position. Sleeping with the knee bent for extended periods in the early weeks can contribute to a flexion contracture (inability to fully straighten the knee), which is why positioning matters during this phase.

• What are the warning signs after total knee replacement?

  Contact Medinity Hospital or attend emergency care if you experience: fever above 38 degrees Celsius, increasing redness, warmth, or swelling around the wound that is getting worse rather than better, wound discharge that is thick, cloudy, or has an odour, sudden severe increase in knee pain after a period of improving, the knee gives way or feels unstable when standing, calf pain and swelling (possible deep vein thrombosis), or shortness of breath or chest pain (possible pulmonary embolism). These symptoms warrant urgent assessment, not a wait-and-see approach.

• What activities should I permanently avoid after knee replacement?

  High-impact activities are generally not recommended after total knee replacement because they accelerate implant wear and increase the risk of early revision surgery. These include: running, jogging, jumping, contact sports, racquet sports played at high intensity, heavy squatting with weights, and kneeling on the operated knee repeatedly. Activities that are safe and encouraged include walking, cycling, swimming, golf (walking the course), and light hiking. Most patients are pleasantly surprised by how active they can be within these guidelines.

• Which patients are not suitable candidates for total knee replacement?

  Patients who are generally not good candidates include those with: active infection in the knee joint or elsewhere in the body (surgery must be deferred until infection is cleared); poorly controlled diabetes (HbA1c above 8 is a relative contraindication); very poor bone quality that cannot support the implant; BMI above 40 with additional risk factors; severe heart or lung disease that significantly increases anaesthetic risk; peripheral vascular disease affecting the leg; and patients with mild arthritis and minimal symptoms where the risk of surgery is not justified by the level of benefit expected. Age alone is not an exclusion criterion.

• What happens if I delay total knee replacement for too long?

  Delaying surgery when it is genuinely needed carries real consequences. Patients who delay until they are using a cane or walker have greater muscle wasting and longer, harder recoveries. Significant bow-legged or knock-kneed deformity can develop as cartilage is lost and bone erodes, making surgery more complex and the outcome potentially less precise. The opposite knee and the hip on the same side are also at higher risk of damage from the compensatory loading patterns that develop around a severely arthritic knee. If conservative treatment is no longer adequate and arthritis is severe on X-ray, delaying further rarely helps and often causes additional harm.

• Is robotic knee replacement better than conventional surgery?

  Short-term studies show robotic-assisted TKR produces more precisely aligned implants on X-ray measurements. However, long-term survivorship data at 10 or more years equivalent to conventional TKR datasets is not yet available. Current evidence does not establish robotic TKR as superior in patient-reported outcomes or long-term implant survival compared to conventional surgery performed by an experienced surgeon. Robotic systems also add significantly to procedure cost, which is passed on to the patient. When evaluating your options, ask your surgeon about their long-term patient outcome scores rather than their technology.

• How long does total knee replacement surgery take?

  At Medinity Hospital, a primary total knee replacement takes approximately 60 to 90 minutes. The total time from anaesthesia to recovery room, including pre-surgical preparation and immediate post-operative assessment, is typically 2 to 3 hours. Bilateral surgery takes correspondingly longer and is assessed on a case-by-case basis.

• How long will my knee replacement last?

  More than 90% of total knee replacements are still functioning well at 15 years per the AAOS AAOS OrthoInfo 2024. At 25 years, approximately 82% are still functioning. Younger patients (under 60) show 90.6 to 99% survival at 10 years in recent literature ScienceDirect 2024. Longevity depends on patient weight, activity level, implant type, and surgical technique.

• What is bone-on-bone knee arthritis and does it mean I need surgery?

  Bone-on-bone means cartilage has worn away completely and the ends of the thigh and shin bones are in direct contact. This is seen on a standing weight-bearing X-ray. It is a strong indicator that surgical assessment is appropriate, but surgery is not automatic. It depends on whether your symptoms are significant enough and whether conservative treatments have been genuinely tried. Some patients with bone-on-bone contact manage adequately with medication and activity modification.

• Can total knee replacement be done if I have diabetes?

  Yes, but diabetes must be well-controlled. HbA1c above 8 significantly increases infection risk, impairs wound healing, and slows recovery. Dr. R.P. Singh works with the patient's physician to optimise blood glucose before scheduling surgery. Patients with well-controlled diabetes undergoing TKR at Medinity Hospital achieve outcomes equivalent to non-diabetic patients in published studies.