Melting down hips and knees: The afterlife of implants

Surgical implants

As people live longer and medical technology improves, more and more of us will have a surgical implant before we die. We are also getting cremated in larger numbers - and so there is often some expensive metal left among the ashes. Where does it go?

"You tell people what you do, and they think... well, that's a bit strange," says Ruud Verberne above the din of giant sorting machines twirling and clanking.

Verberne is co-founder of OrthoMetals, which recycles metal implants from cremated human bodies. That's everything from steel pins to titanium hips and cobalt-chrome knees.

These are the knees that we have to recover," he says. "Some metals can be sorted by magnets. And the remaining have to be sorted by hand."

Strange it may be, and a bit macabre perhaps, but this kind of recycling is a growth industry.

"I know the existence of five or six competitors that we have, most of them in the United States," says Verberne, whose company is based in the Dutch city of Zwolle. "But we were first."

The rise of cremation

Country 1995 2010


































Source: Pharos International, Cremation Society of Great Britain

Verberne had a long career in aluminium recycling. Then, in 1987, he met Jan Gabriels, an orthopaedic surgeon, who asked him what happened to the metal implants he spent his working life attaching to patients.

Verberne had no idea, so he did some research and he found out that they were thrown away. "They were basically buried," he says.

The value of implants collected from a crematorium is only a fraction of their value before surgery, but they are made from good quality metal that is worth recycling.

"The operation to provide a new hip may cost you around £5,000 ($8,000. 6,000 euros)," he explains.

"But the return value as scrap is maybe, per kilo, around £10 ($16, 12 euros). And there are five hips per kilo!"

In 1997, Gabriels and Verberne founded OrthoMetals. Fifteen years later the company recycles more than 250 tons of metal from cremations annually, which gets used to make things like cars, planes, and even wind turbines.

The company works by collecting the metal implants for nothing, sorting them and then selling them - taking care to see that they are melted down, rather than reused.

After deducting costs, 70-75% of the proceeds are returned to the crematoria, for spending on charitable projects.

"In the UK for example," he says. "We ask for letters from charities that have received money from the organisation we work with in the UK and we see that the amount we transferred to them has been given to charity. This is a kind of controlling system that we have."

surgical implants being sorted

Henry Keizer oversees a charitable memorial fund named after the first Dutch person ever cremated - a Dr Vaillant - back in 1913.

He says the fund has helped Dutch crematoria distribute money received from OrthoMetals to support everything from cancer research to school libraries.

The ethical argument

Does recovering metal from cremated corpses contravene that most important of ethical principles - respect for human life?

It depends partly on the purpose of the intervention on the corpse. Medical students dissecting a corpse in order to learn anatomy, done respectfully, is ethical. Using a corpse in a display as a form of entertainment is not.

To be acceptable, I believe the prior consent of the dead person or of the surviving spouse or next-of-kin is required.

The fact that what is recovered is a prosthesis and not "human remains" is also relevant. It makes the process more likely to be seen as ethical, as does giving some of the profits to charity.

Margaret Somerville, Centre for Medicine, Ethics and Law, McGill University, Montreal

"I think the recycling of implants, and artificial joints, is an excellent idea," he says. "Now we get to use them for good purposes, for funds for people that do social things that are extremely important."

Michael Donohue, director of the Donohue Funeral Home in the US state of Pennsylvania, found OrthoMetals through a Google search, when the home recently built its own cremation facility.

"Before we actually started to get up and operating, our biggest thing was - what are we going to do with the metal remains that are left at the end of the process?" says Donohue.

Now, recovered surgical implants go back to Holland for recycling.

Donohue says his staff are candid with loved ones about this. "We are honest with them, and tell them that whatever money is given to us goes to local organisations, and they love knowing that something from their loved one is being used in a great capacity."

Relatively few people are cremated in the US by international standards - the figure currently stands at 40%, though the trend is upwards and there are some big geographical variations.

Start Quote

In earlier days the family would visit a grave to see dad or mum - nowadays they want no obligations”

End Quote Ruud Verberne

Recent figures show Hawaii and Nevada up near 70%, but Mississippi at less than 10%. That could be a mark of socio-economic status, says Verberne. Statistics tend to show poorer people prefer in-ground burials.

In Verberne's native Holland, some 57% of all bodies are cremated. Britain is the biggest cremator in Europe with 73%. And since the Catholic church eased its opposition to cremation, the company has seen growth in places such as Italy and Spain. In all, it operates in 15 countries.

He has some thoughts on why cremation rates are increasing in many parts of the world.

"Two reasons are space and cost," he says. A traditional burial can cost four times as much as cremation. And regarding space, one survey showed 750 burials taking up an acre of ground.

Verberne also identifies some cultural changes. "In earlier days the family would visit a grave to see dad or mum," he says. "Nowadays they scatter the ashes and they are free. They want no obligations."

Mr Verberne has no metal implants himself, but he points out his business partner's wife, who is helping sort out bits of metal at the recycling plant.

"She has two titanium hips", he says. "And she was once asked: "Isn't it strange that you know that one day your hips will run along this conveyor belt?'"

"She said, 'No, it's just a part of life. You're going to die, and I know that reusing metals is a very good thing, so it is no problem at all.'"

She added "'My mother's hip was on here too!'"

Listen to more on this story at PRI's The World, a co-production of the BBC World Service, Public Radio International, and WGBH in Boston.


More on This Story

In today's Magazine


This entry is now closed for comments

Jump to comments pagination
  • rate this

    Comment number 93.

    ive always wondered what happens to the steelwork that remains after a body is burnt...the bodily remains become essentially fertilzer and its surely a good thing that the cybernetic implantations are recycled also...

  • rate this

    Comment number 92.

    People should write Wills stating where they want their implanted metal to go to so that scrapmetal merchants don''t reap the benifits.

  • rate this

    Comment number 91.

    Cynical I maybe but people are making money out of this in today's society. Bury valuable metal No No!!

  • rate this

    Comment number 90.

    53 Sproutaholic

    They make loads of money from the fairies!!

  • rate this

    Comment number 89.

    I wonder what happens to all the gold from fillings - surely it melts at cremation temperatures.

  • rate this

    Comment number 88.

    Britfish - don't know what point is but -

    My ex asked for his gall stone and duly received it in its own little bottle.

    My friend, who recently died, had numerous joint replacements. I hadn't thought about the subject until now and think what a waste that they have been buried with her. She had the most generous nature and am sure she would have donated them if she too, had realised in advance

  • rate this

    Comment number 87.

    It is an excellent idea to recycle the metal bits collected from the cremetoria.
    Well done, OrthoMetals.

  • rate this

    Comment number 86.

    Ted Blodgett wrote:

    "I'd bet a goodly amount that the US companies that are doing this aren't doing it for charity at all."

    What difference does it make? If you care about recycling, what this article is ultimately about, then that's all that should matter.

    I would also "bet a goodly amount" that a lot more "charity" exists within America than it does where you are likely from.

  • rate this

    Comment number 85.

    Ah, how things have changed - or have they? Prostheses received in a
    Path Lab. often had their respective serial numbers removed,then picked
    up by the Osteo guy and sold to South American 'recipients'. That is what
    I was witness to years ago. BTW who ever received their own gall bladder stones when requested. Ha!

  • Comment number 84.

    This comment was removed because the moderators found it broke the house rules. Explain.

  • rate this

    Comment number 83.

    Medical equipment (including implants) used in operations result in insane levels of waste. When someone dies (s)he should be able to will that organs/implants be resold on the open market rather than being wasted or going to enriching the companies which (re)distribute or manufacture them. A few years ago my wife had an operation which involved a $500 pair of scissors which was tossed in the bin.

  • rate this

    Comment number 82.

    I'm intrigued to see that I, and any other person whose opinion berated the Beeb for not allowing comments on many important matters, have been marked as the lowest rated comments: don't believe it. There's clearly a problem with the BBC software, because I just experimented yet again, placing for and against comments, and found the recorded vote bore no relationship to how I voted. Fix it maybe?

  • rate this

    Comment number 81.

    "few..are cremated in the US by international standards. .. figures show Hawaii and Nevada up near 70%, but Mississippi at less than 10%. "Statistics tend to show poorer people prefer.. burials"

    Since when do 10 countries equal "international standards? The article is supposed to be about recycling, not about so-called "poorer" people in certain parts of America! Stop obsessing over America BBC.

  • rate this

    Comment number 80.

    @74 Probably the same kind of silly twaddle that 'time team' and archeologists come up with today to explain away what they find.

  • rate this

    Comment number 79.

    Prepare for the inevitable outcome. In the meantime, don't be dragged into, or waste your life on any extreme dogma - whether politics, religion or random media idiots.

    Avoid social network sites - they make money from you and sell your information. Live your life, in real time, with your family/ friends. If you think you hate your family/friends, you won't find substitutes online. Look at you?

  • rate this

    Comment number 78.

    Some posters suggest the idea of removing these parts prior to burial would be ghoulish. Why? My grandad was buried in an organic grave yard, as he wished, and if he'd had non-biodegradable body parts I'm sure he'd have been fine about them being removed first. It's hardly like it would have hurt him.

  • rate this

    Comment number 77.

    I'd bet a goodly amount that the US companies that are doing this aren't doing it for charity at all.

  • rate this

    Comment number 76.

    My mother died recently, and I still have the duty to scatter her ashes. As she had two knee replacements I was concerned and interested to know what would happen to these metal implants. Now I know, and knowing my mother’s my curiosity right to the last (she was 90) she too would be interested to know! She hated waste!

  • rate this

    Comment number 75.

    29. chubattack

    You can already have your ashes taken and processed into a diamond. So not only can you turn your loved one into a gem stone, you can use their prosthetics to mount the gem.

  • rate this

    Comment number 74.

    Each person's ashes are collected and then crushed before they are given to relatives. All evident metal is removed. My local crematorium used to collect up all the left over metal (mainly coffin staples but also replacement hips etc) and solemnly bury them on the grounds once a month. I sometimes wondered what archeologists in 1000 years would make of these buried collections.


Page 1 of 5



Copyright © 2015 BBC. The BBC is not responsible for the content of external sites. Read more.

This page is best viewed in an up-to-date web browser with style sheets (CSS) enabled. While you will be able to view the content of this page in your current browser, you will not be able to get the full visual experience. Please consider upgrading your browser software or enabling style sheets (CSS) if you are able to do so.