Every Millimetre Holds Part of a Life

Under the microscope, the world shrinks to a few millimetres

There are moments in the operating room when the wide world outside seems to close in.

All that remains is a surgical field under the microscope. A vessel a few millimetres wide. A very fine nerve. And a surgeon standing almost still for hours, placing each stitch where every movement must be exact.

Some of these operations last 10 to 15 hours. Dr Vo Thai Trung and his colleagues join vessel after vessel, nerve after nerve, working patiently through each tiny millimetre to save part of a patient’s body [1].

He once said:

“Microsurgery fascinates me because it is a field where every millimetre matters” [1].

In microsurgery, a millimetre is no longer just a unit of measure.

Behind it may be a hand that worked. A leg that carried someone through the days of earning a living. The ordinary things of a life – until an accident puts them at risk of never being whole again.

And so the surgeon bends over the microscope.

Patiently.

Quietly.

One millimetre at a time.

From Dong Thap, a dream that travelled far

Vo Thai Trung was born and grew up in Dong Thap. As a child, he saw that not everyone in his home village could afford to see a doctor when they fell ill. That was what planted his dream of becoming a doctor [3].

The dream carried him a long way: graduation from the Vietnam Military Medical University, specialist training level I at the University of Medicine and Pharmacy at Ho Chi Minh City, then level II at Pham Ngoc Thach University of Medicine. Today he is Deputy Head of Trauma and Orthopaedics at Binh Duong General Hospital [1].

He joined the department in 2013. Binh Duong has many industrial parks, and with them many workplace and road accidents. In the past, many patients had to be transferred to higher-level hospitals [1].

With his colleagues, he introduced step by step the replantation of amputated hands, toe-to-hand transfer, microsurgical joint reconstruction and free-flap coverage [1].

But behind the name of each technique is another story.

Because a hand is never just a hand.

“Saving a hand or a leg for them also means saving their chance to earn a living” [1].

There, medicine touches life in a very concrete way: keeping the ability to grip and to walk – and with it, part of the road ahead.

Some parts of the body take a long way home

On New Year’s Eve 2022–2023, a patient with multiple injuries and an amputated lower leg was brought to the hospital. The patient was not yet stable enough for immediate replantation. The team chose to keep the leg alive on the opposite limb, and to replant it once the patient was ready. The operation lasted more than 5 hours [1].

A part of the body, in special circumstances, was kept somewhere else to wait for its return.

Almost three years later, in September 2025, another challenge came to the team.

A 20-year-old woman, 23 weeks pregnant with twins, lost her right hand in a workplace accident [4].

This time, the hand was attached to her lower leg to keep it perfused. The operation lasted 9 hours, from 5 pm until 3 am the next morning [4].

Time seemed to be measured to a different rhythm.

Not only in hours.

But in the blood flow that had to be kept going. In the life of the limb being saved. In the days of waiting until the mother and her two babies reached the point where the next step was possible.

Twelve hours for a hand to come home

About two months later, at 34 weeks of pregnancy, the hand was returned to its original place [5].

The operation at the end of November 2025 lasted more than 12 hours. The radius was fixed with a plate and screws; the team joined one artery and three veins, and grafted tendons and nerves. Throughout, the babies’ heartbeats were monitored continuously [5, 6].

Behind the operating room stood a whole network of specialists with one goal. The case was discussed across anaesthesia, orthopaedics, obstetrics, intensive care, haematology and nutrition, with remote consultation from the Hospital for Traumatology and Orthopaedics and Tu Du Hospital [5].

Some operations make it very clear: medicine is never the story of one pair of hands alone.

A surgeon may stand under the microscope for hours. But behind him are colleagues, many specialties, and decisions that must follow one another as precisely as the vessels being joined.

And when they have all come through those long hours, what they wait for is not only a hand back in its place.

It is a promise kept to the end.

“A promise must be kept with responsibility. We have kept ours” [3].

After the operating lights, the surgeon still bows his head

On 4 December 2025, the team received a letter of commendation from the Secretary of the Ho Chi Minh City Party Committee, and the Chairman of the City People’s Committee awarded certificates of merit to the teams and to Dr Vo Thai Trung [6].

But when he speaks of these results, he does not put himself at the centre.

He speaks of the guidance of his teachers, of the hospital’s leaders, of Assoc. Prof. Nguyen Lan Hieu – the hospital director – and of the colleagues beside him [3].

“My contribution is very small; what we have achieved is thanks to the guidance and teaching of my teachers…” [3].

Perhaps that, too, is a beautiful image of medicine.

After hours standing almost motionless under the microscope, after operations of 10, 12 or 15 hours, what remains is not only the difficult techniques.

It is the way a doctor looks at part of a patient’s body and sees a whole life behind it.

A hand is work.

A leg is every step.

A millimetre of vessel is so small it must be seen through a microscope, yet what the surgeon protects behind that millimetre is far larger.

From the boy in Dong Thap who saw his neighbours fall ill without the means to be treated, to the surgeon who today bends over tiny vessels, the journey has kept one direction: towards the patient.

It lies in every millimetre patiently joined.

In a hand that was saved.

In a leg that had a chance to come home.

And in the life ahead that a patient can keep walking into, in their own body.

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