A man adjusts an artificial limb for Palestinian Suleiman Malihat, who lost his his right leg, at a Bedouin encampment near Jericho in the Israeli-occupied West Bank July 18, 2020. Picture taken July 18, 2020. REUTERS/Mohamad Torokman

Palestinians, who, according to medics, lost their legs after they were shot by Israeli forces during border protests, are seen in an artificial limb center in Gaza City April 2, 2019. Picture taken April 2, 2019. REUTERS/Mohammed Salem

Palestinian woman Nazeeha Qudieh, 38, who, according to medics, lost her right leg after she was shot by Israeli forces during a protest at the Israel-Gaza border, puts on her artificial limb as her brother Suhaib, 33, who also lost a leg in the protests, stands at their house in Khan Younis in the southern Gaza Strip April 1, 2019. Picture taken April 1, 2019. REUTERS/Mohammed Salem

Palestinian Mohammad Alewa, 19, who, according to medics, lost his right leg after he was shot by Israeli forces during a protest at the Israel-Gaza border, waits to be fitted with an artificial limb in Gaza City April 2, 2019. Picture taken April 2, 2019. REUTERS/Mohammed Salem

Palestinian woman Nazeeha Qudieh, 38, who, according to medics, lost her right leg after she was shot by Israeli forces during a protest at the Israel-Gaza border, puts on her artificial limb at her house in Khan Younis in the southern Gaza Strip April 1, 2019. Picture taken April 1, 2019. REUTERS/Mohammed Salem

A technician works in an artificial limb center in Gaza City April 2, 2019. Picture taken April 2, 2019. REUTERS/Mohammed Salem

Artificial limbs and prosthetic legs are seen in an artificial limb center in Gaza City April 2, 2019. Picture taken April 2, 2019. REUTERS/Mohammed Salem

Palestinian Abdallah Qassem, 17, who, according to medics, lost his both legs after he was shot by Israeli forces during a protest at the Israel-Gaza border, is seen inside an artificial limb center in Gaza City April 2, 2019. Picture taken April 2, 2019. REUTERS/Mohammed Salem

Palestinian Basim Abu Obaid, 32, who, according to medics, lost a leg after he was shot by Israeli forces during a protest at the Israel-Gaza border, is reflected in a mirror inside an artificial limb center in Gaza City April 2, 2019. Picture taken April 2, 2019. REUTERS/Mohammed Salem

Artificial limbs and prosthetic legs are seen in an artificial limb center in Gaza City April 2, 2019. Picture taken April 2, 2019. REUTERS/Mohammed Salem

Palestinians, who, according to medics, lost their legs after they were shot by Israeli forces during border protests, are seen in an artificial limb center in Gaza City April 2, 2019. Picture taken April 2, 2019. REUTERS/Mohammed Salem

A patient practices walking with an artificial limb at the Pakistan Institute of Prosthetic and Orthotic Sciences PIPOS in Peshawar, Pakistan January 30, 2019. REUTERS/Fayaz Aziz

A dummy wears the C-Brace orthosis at the German artificial limb maker Ottobock media day in Vienna, Austria October 23, 2018. Picture taken October 23, 2018. REUTERS/Leonhard Foeger

A patient wears the C-Brace orthosis at the German artificial limb maker Ottobock media day in Vienna, Austria October 23, 2018. Picture taken October 23, 2018. REUTERS/Leonhard Foeger

A patient wears the C-Brace orthosis at the German artificial limb maker Ottobock media day in Vienna, Austria October 23, 2018. Picture taken October 23, 2018. REUTERS/Leonhard Foeger

A patient wears the C-Brace orthosis at the German artificial limb maker Ottobock media day in Vienna, Austria October 23, 2018. Picture taken October 23, 2018. REUTERS/Leonhard Foeger

A patient wears the C-Brace orthosis at the German artificial limb maker Ottobock media day in Vienna, Austria October 23, 2018. Picture taken October 23, 2018. REUTERS/Leonhard Foeger

A technician holds the Ottobock C-Brace orthosis during the German artificial limb maker media day in Vienna, Austria October 23, 2018. Picture taken October 23, 2018. REUTERS/Leonhard Foeger

A pair of artificial limbs for Maya Meri, 8, is seen at a prosthetic center in Istanbul, Turkey, July 5, 2018. Picture taken July 5, 2018. REUTERS/Osman Orsal

Prosthetics are seen at the Artificial Limb Centre in Basra, Iraq February 28, 2018. Picture taken February 28, 2018. REUTERS/Essam Al-Sudani

A worker prepares prosthetics at the Artificial Limb Centre in Basra, Iraq February 28, 2018. Picture taken February 28, 2018. REUTERS/Essam Al-Sudani

A landmine victim waits for his prosthetics at the Artificial Limb Centre in Basra, Iraq February 28, 2018. Picture taken February 28, 2018. REUTERS/Essam Al-Sudani

A disabled man tries to walk with his prosthetic leg at the Artificial Limb Centre in Basra, Iraq February 28, 2018. Picture taken February 28, 2018. REUTERS/Essam Al-Sudani

Prosthetics are seen at the Artificial Limb Centre in Basra, Iraq February 28, 2018. Picture taken February 28, 2018. REUTERS/Essam Al-Sudani

A worker prepares prosthetics at the Artificial Limb Centre in Basra, Iraq February 28, 2018. Picture taken February 28, 2018. REUTERS/Essam Al-Sudani

Staff assist a man who is waiting for his artificial leg at a prosthetic limbs centre in Marib, Yemen January 26, 2018. Picture taken January 26, 2018. REUTERS/Faisal Al Nasser

Boys with artificial legs sit in a prosthetic limbs centre in Marib, Yemen January 26, 2018. Picture taken January 26, 2018. REUTERS/Faisal Al Nasser

People with artificial legs sit in a prosthetic limbs centre in Marib, Yemen January 26, 2018. Picture taken January 26, 2018. REUTERS/Faisal Al Nasser

A worker prepares an artificial leg at a prosthetic limbs centre which is helping war victims in the southwestern city of Taiz, Yemen December 24, 2017. REUTERS/Anees Mahyoub

A worker prepares an artificial leg at a prosthetic limbs centre which is helping war victims in the southwestern city of Taiz, Yemen December 24, 2017. REUTERS/Anees Mahyoub

A worker prepares an artificial leg at a prosthetic limbs centre which is helping war victims in the southwestern city of Taiz, Yemen December 24, 2017. REUTERS/Anees Mahyoub

A woman with amputated legs waits for her artificial legs at a prosthetic limbs centre which is helping war victims in the southwestern city of Taiz, Yemen December 24, 2017. REUTERS/Anees Mahyoub

A man with an amputated leg waits for his artificial leg at a prosthetic limbs centre which is helping war victims in the southwestern city of Taiz, Yemen December 24, 2017. REUTERS/Anees Mahyoub

A woman with amputated legs waits for her artificial legs at a prosthetic limbs centre which is helping war victims in the southwestern city of Taiz, Yemen December 24, 2017. REUTERS/Anees Mahyoub

A worker measures a man's amputated leg to prepare an artificial leg for him at a prosthetic limbs centre which is helping war victims in the southwestern city of Taiz, Yemen December 24, 2017. REUTERS/Anees Mahyoub

Khushhal Khan Ayobi, 34, a disabled Afghan National Army (ANA) soldier, fits his artificial limb at his house in Jalalabad province, Afghanistan. August 2, 2017. Picture taken on August 2, 2017.REUTERS/Parwiz

After losing his right forearm in a factory accident, Chang Hsien-Liang tried several artificial limbs but he was never satisfied. The arms he could afford were too basic and the robotic hand he wanted was too expensive. So, the 46-year-old engineer from southwest Taiwan set out to design and build his own prosthetic arm using 3D printing technology. Now, Chang wants to help others. He is designing and building a prosthetic hand for eight-year-old Angel Peng, whose hand was injured in a scalding accident when she was nine months old. Her mother Peng Ji-han said they heard about Chang at Angel's clinic. "She grew up thinking it is normal not to have one hand," Peng said, adding she could not afford an expensive prosthetic for her daughter. REUTERS/Tyrone Siu SEARCH "PROSTHETIC 3D" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. Matching text: TAIWAN-PROSTHETICS/

A technician produces artificial limbs at Red Cross Physical Rehabilitation Centre in Erbil, Iraq April 2, 2017. Picture taken April 2, 2017. REUTERS/Suhaib Salem

Technicians produce artificial limbs at Red Cross Physical Rehabilitation Centre in Erbil, Iraq April 2, 2017. Picture taken April 2, 2017. REUTERS/Suhaib Salem

A technician produces artificial limbs at Red Cross Physical Rehabilitation Centre in Erbil, Iraq April 2, 2017. Picture taken April 2, 2017. REUTERS/Suhaib Salem

A technician produces artificial limbs at The Red cross Physical Rehabilitation Centre in Erbil, Iraq April 2, 2017. REUTERS/Suhaib Salem

Artificial limbs are seen at Red Cross Physical Rehabilitation Centre in Erbil, Iraq April 2, 2017. REUTERS/Suhaib Salem

A technician produces artificial limbs at Red Cross Physical Rehabilitation Centre in Erbil, Iraq April 2, 2017. REUTERS/Suhaib Salem

A man walks past artificial limbs at Red Cross Physical Rehabilitation Centre in Erbil, Iraq April 2, 2017. REUTERS/Suhaib Salem

Technicians produce artificial limbs at Red Cross Physical Rehabilitation Centre in Erbil, Iraq April 2, 2017. REUTERS/Suhaib Salem

A technician produces artificial limbs at Red Cross Physical Rehabilitation Centre in Erbil, Iraq April 2, 2017. REUTERS/Suhaib Salem

Salah Hassan Abdullah, 13, who lost his leg after a mortar shell hit his village in Yemen's southwestern province of Taiz during clashes between Houthi fighters and government forces, tests an artificial leg at a prosthetic limb centre in Sanaa, Yemen January 16, 2017. REUTERS/Khaled Abdullah

Adel Ahmad Yahya, 16, stands as he waits for his artificial leg to be delivered at a prosthetic limb centre in Sanaa, Yemen January 16, 2017. REUTERS/Khaled Abdullah

An artificial leg of a Houthi fighter, who lost his leg during recent clashes against government forces, is pictured at a prosthetic limb centre in Sanaa, Yemen January 16, 2017. REUTERS/Khaled Abdullah

A Houthi fighter, who lost his both legs during recent clashes against government forces, gets his artificial legs tested at a prosthetic limb centre in Sanaa, Yemen January 16, 2017. REUTERS/Khaled Abdullah

A Houthi fighter, who lost his leg during clashes against government forces, tests his artificial leg at a prosthetic limb centre in Sanaa, Yemen January 16, 2017. REUTERS/Khaled Abdullah

A worker prepares an artificial leg at a prosthetic limbs centre in Sanaa, Yemen December 24, 2016. REUTERS/Khaled Abdullah

A worker prepares an artificial leg at a prosthetic limbs centre in Sanaa, Yemen December 24, 2016. REUTERS/Khaled Abdullah

Nobel Laureate Eric Maskin (R) presents the 2016 Ig Nobel Prize in Biology to Thomas Thwaites of the United Kingdom for "creating prosthetic extension of his limbs that allowed him to move in the manner of, and spend time roaming the hills in the company of, goats" during the 26th First Annual Ig Nobel Prize ceremony at Harvard University in Cambridge, Massachusetts, U.S. September 22, 2016. REUTERS/Brian Snyder TPX IMAGES OF THE DAY

U.S. President Barack Obama (2nd R) bows as he meets Thippasone Soukhathammavong, director of UXO Lao, as he visits the Cooperative Orthotic and Prosthetic Enterprise (COPE) for victims of amputations due to accidents with the many rounds of unexploded ordnance remaining in the Laotian countryside following the Vietnam War era, on the sidelines of the ASEAN Summit, in Vientiane, Laos September 7, 2016. REUTERS/Jonathan Ernst

U.S. President Barack Obama (L) meets Thoummy Silamphan from the Quality of Life Association, himself the victim of an accident that cost him his left hand, as he visits the Cooperative Orthotic and Prosthetic Enterprise (COPE) for victims of amputations due to accidents with the many rounds of unexploded ordnance remaining in the Laotian countryside following the Vietnam War era, on the sidelines of the ASEAN Summit, in Vientiane, Laos September 7, 2016. REUTERS/Jonathan Ernst

Prosthetic legs form a museum installation as U.S. President Barack Obama visits the Cooperative Orthotic and Prosthetic Enterprise (COPE) for victims of amputations due to accidents with the many rounds of unexploded ordnance remaining in the Laotian countryside following the Vietnam War era, on the sidelines of the ASEAN Summit, in Vientiane, Laos September 7, 2016. REUTERS/Jonathan Ernst