Two Qatari aid convoys arrived from Turkey on Sunday and Monday, bringing with them critical supplies and a team of medical workers.

“We came with 25 other doctors, nurses and technicians who specialise in various medical fields such as neurosurgery, orthopaedia, general surgeons, psychiatry and intensive care doctors,” said Mohammad Murshed Delimi, an Iraqi plastic surgeon who lives in Qatar and travelled to the northwestern city of Idlib with the Qatari Red Crescent.

The convoys carried medical equipment to supply hospitals in the region, particularly for seriously wounded patients who faced the possibility of losing their limbs due to crushing injuries, Delimi said.

The help is acutely needed. Dr Zuhair Karrat, Idlib’s health director, described the health sector’s situation as “catastrophic” following the magnitude 7.8 and 7.6 earthquakes on February 6.

“All hospitals and health centres in the region are completely filled with the wounded,” he told Al Jazeera. “There are even some cases that are being treated in the corridors because there are no empty rooms in the hospitals.”

The large numbers of wounded have put a big strain on a fragile medical sector already struggling with shortages of doctors, medical equipment and medicines after 12 years of war.

Karrat said the situation has been worsened because doctors and nurses have been affected by the quakes just like everyone else in the region. Some medical staff have been killed or injured. Others have been preoccupied with securing shelter for their families or searching for relatives under the rubble.

According to the Syrian Civil Defence, also known as the White Helmets, a volunteer rescue group operating in opposition-controlled parts of Syria, the death toll in the northwestern region is at least 2,274 people and more than 14,000 have been injured.

“More than 12,000 injured have been received by operating hospitals in the Idlib region alone, and most of the injured are still in hospitals receiving treatment or waiting for their turn to undergo the necessary surgeries,” Karrat said.

“There are more than 90 injured people who are still in intensive care and need regular dialysis as a result of being crushed under the rubble for a prolonged time,” he added.

Karrat said hospitals in Idlib are in dire need of medicines, dialysis machines, orthopaedic doctors, neurosurgeons, anaesthesia and fuel to operate oxygen stations.

Qatari health delegation

The Qatari doctors have been working in hospitals that include al-Shefa’a in Idlib, al-Rahma in Darkoush and Aqrabat near the Syrian-Turkish border.

“We have performed nearly 250 surgeries since last Sunday, 100 of which were major and complex surgeries, in addition to examining and following up on old injuries,” said Ahmad Ajaj, an intensive care doctor.

Ajaj said the Qatari Red Crescent is operating an air bridge, which will continue to provide northwestern Syria with medical and relief aid.

“This region was already stricken even before the earthquake occurred and was exhausted by wars; therefore, its original stock of medicines and medical equipment is very low, and the doctors there are working beyond their capacity,” he said.

But the dedication of the Syrian staff have made an impression on the Qataris.

“We were shocked and sad from what we first saw when we initially entered Syria,” Delimi said. “A nurse in one of the hospitals lost his entire family under the rubble, and one of his arms had to be amputated, but his patience and ability to work under extreme circumstances left us surprised.”

Rights groups have criticised the slow humanitarian response in Syria. Human Rights Watch said the single border crossing through which international aid is allowed to pass from Turkey into opposition-held areas is inadequate. That is the Bab al-Hawa crossing, which the Qatari teams used.

United Nations aid chief Martin Griffiths has acknowledged shortcomings in the response, saying the people of northwestern Syria “rightly feel abandoned” because the assistance they had hoped for had not yet arrived.

Limited resources compounded by trauma

A big international response has been lacking, but smaller groups are doing what they can to save lives, including the Syrian American Medical Society. Mufaddal Hamadeh, an oncologist and former president of the group, told Al Jazeera about 10 of the group’s doctors had entered the region last week.

The team includes orthopedic physicians, anesthesiologists, pain specialists, intensive care specialists and nephrologists. So far, it has performed about 35 procedures.

“We picked these specialties because we thought that these are the fields need, especially after trauma, with a high percentage of injured people having fractures and bone problems,” said Hamadeh, who flew from Chicago, Illinois, to Turkey, then crossed the border into Syria.

His organisation has been heavily involved in relief efforts during the 12 years of Syria’s war. It has sent about 1,700 doctors to work at hospitals there.

In the latest crisis, Hamadeh said, “the biggest limitation factor is the lack of proper infrastructure to handle such complex cases.”

“Those cases are subject to post-surgery complications which will require a lot of work and expertise and very delicate instruments that can’t be found here for procedures involving neurosurgery, complex plastic surgery and rehabilitation,” he said.

Most of northwest Syria’s population of about four million, including at least 2.6 million displaced people, relied on humanitarian aid even before the earthquakes struck. Since 2011, they have faced crisis after crisis in addition to the war, including food shortages, lack of fuel and a cholera outbreak.

Hamadeh warned that the suffering of many people in the region is compounded by relentless trauma – first from the war and displacement, then by the natural disaster.

“There is a dire need for physiological support which is a necessity during this time, as many patients lost their entire families,” he said.