How MAKO Robotic Surgery Actually Works

MAKO is a robotic-arm assisted surgical system made by Stryker. It does not perform surgery independently — the surgeon is in control throughout.

What MAKO adds is a physical constraint on the surgeon's movements during bone cutting, preventing deviation from the pre-planned surgical boundaries. Think of it as power steering rather than autopilot — the surgeon drives, but the system prevents them from going where the plan says not to go.

Before surgery, a CT scan of your knee is taken. MAKO's software uses that scan to build a three-dimensional model of your specific knee — including its exact geometry, the angle of the bones, the alignment of the joint, and the anatomy that will determine where the implant needs to sit.

The surgeon uses this 3D model to plan the entire operation — exactly how much bone to remove from each surface and precisely where to position each component of the prosthesis.

During surgery, the robotic arm provides haptic feedback — it pushes back physically against the surgeon if the cutting instrument approaches the boundary of the planned resection zone. This prevents the millimetre-level deviations that occasionally occur in conventional surgery when the surgeon is manually estimating positioning.

The result is implant placement accurate to sub-millimetre levels — compared to the ±2 to 3 millimetre variation inherent in even skilled manual technique.

Precision and Outcomes — What the Evidence Shows

The precision advantage of MAKO over conventional surgery is well established and measurable. Studies consistently show that robotic-assisted placement reduces implant alignment error from the ±2 to 3 millimetre range of manual surgery to sub-millimetre accuracy.

Implant alignment is the single strongest predictor of long-term implant survival — a component that is even slightly off its optimal axis generates uneven stress across the plastic bearing surface, accelerating wear. Over 15 to 20 years of daily use, even small misalignment differences accumulate.

The clinical question — whether this precision advantage translates into meaningfully better patient-reported outcomes in the medium term — is more nuanced.

Studies comparing robotic and conventional knee replacement show that MAKO patients tend to report less post-operative pain in the first weeks of recovery.

Earlier return to walking without aids and a higher proportion saying the knee "feels natural" are consistently reported. At five years, the differences in pain relief and function are smaller — both groups report good outcomes.

The long-term alignment advantage is expected to become most apparent at 15 to 20 years.

That is when revision rates diverge between well-aligned and poorly-aligned implants.

Soft tissue preservation is another genuine advantage. MAKO's haptic boundary system prevents inadvertent cutting into healthy tissue during the resection phase.

Less soft tissue trauma means less post-operative swelling, faster early rehabilitation, and in some studies a lower requirement for pain medication in the first two weeks.

For international patients whose recovery period in India is fixed at three to four weeks, faster early recovery is practically valuable — more patients reach their physiotherapy milestones before their scheduled departure.

Cost Premium — What Robotic Adds in India vs UK vs USA

The cost difference between robotic and conventional knee replacement in India is USD 1,500 to 3,000 per procedure — significant but not prohibitive, particularly given that the total robotic procedure in India is still far less than conventional surgery in the UK or USA.

This is the cost context that makes India's MAKO programme compelling for international patients: the same technology at a fraction of the Western price.

India costs: JCI/NABH accredited hospitals. International patient rates. Standard implant included. May 2026. UK and US costs are indicative private/uninsured rates for equivalent procedures.

To put the India premium in context: robotic TKR at an Indian JCI hospital costs USD 6,000 to 10,000. Conventional TKR at the same hospital without insurance in the USA costs USD 30,000 to 70,000.

A UK patient paying £13,000 to £19,500 for robotic surgery privately is paying two to three times what the same procedure costs in India. The India premium over Indian conventional surgery is USD 1,500 to 3,000.

The India discount versus UK robotic surgery is £8,000 to £14,000. The calculus is straightforward for patients from either country.

Who Benefits Most — and For Whom Traditional Is Fine

The decision is not simply "robotic is better, therefore everyone should have it." The evidence supports a more nuanced picture, and understanding where the benefit is greatest helps you decide whether the premium is worth paying for your specific situation.

Robotic surgery is the stronger choice when:

You are younger — under 60 — and expect to be active for 15 to 20 years post-surgery. The alignment precision advantage compounds over time, and a younger patient is more likely to live long enough for the difference between optimal and near-optimal alignment to matter for revision rates.

You have a complex deformity — severe varus or valgus malalignment — where manual technique is inherently more challenging and the risk of suboptimal positioning is higher. You are having partial replacement, where precise positioning within a single compartment is technically more demanding than total replacement and the margin for error is smaller.

You specifically want the fastest possible early recovery, because shorter early physiotherapy trajectories can matter when your in-country time is limited.

Traditional surgery by a high-volume surgeon is a sound choice when:

You are over 65 with standard anatomy. A surgeon who has performed 500 knee replacements per year for twenty years achieves manual alignment that, in most cases, falls within the precision range that produces good long-term outcomes.

The measurable advantage of robotic assistance is smaller when the baseline manual skill is very high. The additional USD 1,500 to 3,000 may be better directed toward a higher-grade implant or supplementary physiotherapy.

You have a tight budget and the difference between USD 4,000 and USD 7,000 total trip cost is meaningful. You have straightforward anatomy — bilateral arthritis with no unusual deformity — and the surgeon at your preferred hospital has a well-documented conventional programme.

Which Hospitals in India Have MAKO

MAKO systems cost approximately INR 7 to 10 crore (roughly USD 850,000 to 1.2 million) each. Not every hospital can justify that investment.

The hospitals that have committed to MAKO in India's major medical tourism hubs are also, not coincidentally, the hospitals with the highest joint replacement volumes — the investment makes sense only where the procedure frequency justifies it. All GAF Healthcare partner hospitals with MAKO are JCI or NABH accredited.

NAVIO — The Imageless Robotic Alternative

NAVIO is a robotic system made by Smith and Nephew, and it differs from MAKO in one practically important way: it does not require a pre-operative CT scan. MAKO builds its 3D surgical plan from CT imaging taken before the operation.

NAVIO builds its plan intraoperatively — using sensors placed on the knee during surgery to generate real-time anatomical data and 3D mapping. This makes NAVIO what is called an "imageless" robotic system.

For international patients, NAVIO's imageless design has a specific practical advantage. Patients who cannot arrange a CT scan before travelling to India — either because access is limited at home or because the logistics are complicated — can still have robotic surgery.

With MAKO, the CT scan must be performed before the operation, and it needs to be of sufficient quality for the software to build the 3D model. With NAVIO, that step happens in the operating room.

Both systems use a robotic arm with haptic feedback to constrain cutting to the planned boundaries. Both achieve sub-millimetre alignment accuracy versus manual surgery's ±2 to 3 millimetres.

The clinical outcomes between the two systems are broadly comparable. The choice between MAKO and NAVIO is typically made by the surgeon and hospital rather than by the patient — at Fortis FMRI Gurgaon, both are available and the surgeon selects based on the specific case characteristics.

"I had read about MAKO before contacting GAF Healthcare and was certain I wanted it. The specialist reviewed my MRI and told me I was 58, active, had a moderately complex medial compartment issue, and that in my specific case the precision of robotic surgery was worth the extra cost. I had MAKO at Fortis in Gurgaon. The knee felt natural within four weeks. I was cycling at three months. At 18 months it still feels like my original knee. The USD 2,000 premium was the best medical decision I have made."