Minimally invasive surgery: what are its advantages over conventional surgery?

“Minimally invasive” describes an approach, not a guaranteed result

Minimally invasive surgery uses small incisions and, depending on the specialty, a camera, laparoscopy, thoracoscopy, endoscopy or a robotic system. Its aim is to reduce the trauma caused by surgical access while performing the same therapeutic procedure as needed. It does not mean “minor surgery”: some minimally invasive procedures are technically complex.

What benefits can be expected?

In many procedures, minimally invasive approaches are associated with less post-operative pain, less blood loss, faster mobilisation, smaller scars and sometimes a shorter stay. But the extent of the benefit depends on the operation, the diagnosis and the team’s experience. Reviews comparing open, laparoscopic and robotic surgery highlight considerable differences between specialties.

When is open surgery still preferable?

A very large tumour, extensive adhesions, a haemorrhagic emergency, complex anatomy or the need for wide exposure may make open surgery safer or more effective. Even when an operation begins laparoscopically, conversion to open surgery may become necessary to treat the condition properly or to keep the patient safe; this conversion is not necessarily a “failure”.

The experience of the surgeon and the team matters

The choice of a technique should not rest solely on the name of a robot or a device. The team’s volume of activity, its mastery of the procedure, the anaesthesia, post-operative care and the ability to manage a complication must all be considered. A technology only improves care if it is suited to the indication.

The learning curve, the quality of the equipment and the organisation of the operating theatre also influence results; advanced technology does not make up for a poorly chosen indication. In the spine or some disciplines, the term “minimally invasive” also covers percutaneous or endoscope-assisted techniques.

Recovery: staying realistic

Even with small incisions, the body has to recover from the anaesthesia and the internal procedure. Instructions on mobility, eating, anticoagulation, wound care and returning to work remain important. Recovery depends more on the actual operation than on the external appearance of the scars.

What to ask before the operation?

• Why is this approach being proposed in my case?
• What are the open or non-surgical alternatives?
• What is the risk of conversion?
• What recovery is usually expected for this specific procedure?
• Has the benefit of the minimally invasive technique been demonstrated for this operation?

Frequently asked questions