Scientists have invented a replacement hand that’s controlled by your mind
A man who lost part of his arm in a car crash has been trying it out, after doctors attached it to him using special wires. By the end of the experiment he could wiggle the robotic fingers, make a fist and grab objects with his new hand. It’s called the Life Hand. It has cost £2m and has taken the team five years to build.
Testing the new technology
After losing his forearm in a car crash, 26-year-old Pierpaolo Petruzziello agreed to participate in a one-month medical experiment to test out a robotic hand that can be controlled by a patient’s thoughts. Now, doctors say that the test run was successful, and may open the door for major developments to come.
More progress to come
Unlike most other prosthetics, this robot hand wasn’t implanted directly into Petruzziello, but was connected with a series of electrodes that were attached to the nerve endings on his severed arm.
The Associated Press reports that, at a press conference, the medical team played video footage of the patient controlling the hand’s actions with his mind as the device sat next to him. During the experiment, he learned to wiggle his fingers, make a fist, and grab objects. Said Petruzziello, “It felt almost the same as a real hand… you can’t imagine what they did to me.” Neurologist Paolo Maria Rossini jokingly added, “Some of the gestures cannot be disclosed because they were quite vulgar.” (Awesome.)
See the video here
This experience is very helpful for patients who have suffered only partial loss of a hand or arm
Other similar thought-controlled prosthetic experiments have been successful in the past, but all of those only worked when a limb was completely severed. Scientists hope that this development may offer solutions for patients who have suffered only partial loss of a hand or arm. Although the project lasted only a month, it was still the longest that electrodes had remained connected to a patient’s nervous system.
Further challenges ahead
Doctors acknowledge that the next challenge is to develop a more durable device that can function for years on end. It’s clear, though, that the significance of this particular success shouldn’t be downplayed. There may still be barriers to overcome, but if prosthetic science progresses as rapidly as it has, it should only be a matter of time before someone smashes through them — with a robotic fist or otherwise.
After breast cancer is gone, pain can linger for long
Even three years after finishing treatment for breast cancer, almost 50 percent of women report long-term pain, a new Danish study finds.
The research, published in the Nov. 11 issue of the Journal of the American Medical Association, strengthens earlier findings, said study senior author Dr. Henrik Kehlet, a professor of perioperative therapy at Rigshospitalet at Copenhagen University. But this work indicates which women are most likely to experience persistent pain.
“Several previous scientific reports have shown a risk of chronic pain after breast cancer surgery,” said Kehlet. The strength of this study, he noted, is the large number of participants — more than 3,000 — and the evaluation of many types of treatments.
Kehlet’s team reviewed questionnaires filled out by 3,253 women who had undergone breast cancer treatment in Denmark between 2005 and 2006. Their treatments varied and included breast-conserving surgery, mastectomy, radiation, chemotherapy and dissection of the lymph nodes.
The women were asked whether they experienced pain, in what areas of the body, how bad it was and how often they experienced it.
In all, 1,543 — 47 percent — reported pain in one or more areas. Of those, 52 percent reported severe or moderate pain.
Among those who had severe pain, 77 percent said they had it daily. For those who reported their pain as light, 36 percent had it every day. Pain was reported in the breast area, the armpit, the arm and the side of the body.
The research was funded by the Danish Cancer Society, Breast Friends and a private organization that funds science research, the Lundbeck Foundation.
Women under 40 were more than three times more likely to have chronic pain than older women, the researchers found. Those having radiation therapy were more likely to have pain than those who had chemotherapy. Dissection of the axillary (under arm) lymph node was associated with increased likelihood of pain compared to dissection of the sentinel lymph node (the first node to which the cancer is likely to spread).
Why does the pain linger?
“There are multiple mechanisms to explain the risk of chronic pain,” Kehlet said, “such as young age, risk of nerve damage during axillary dissection, radiation therapy or a general pain hyper-responsiveness in some patients.”
More research is needed on the pain mechanism in those who experience high levels of discomfort, he said. The focus for now should be on identifying patients at high risk for pain and providing preventive treatment and nerve-sparing treatment when possible.
The results do not surprise Dr. Robert H. Dworkin, a pain specialist and professor of anesthesiology, neurology, oncology and psychiatry at the University of Rochester School of Medicine and Dentistry in New York, who has also published on lingering cancer pain.
But the findings may come as a surprise to oncologists and others who treat cancer patients, he said. “Women tend not to tell their surgeons about this continuing pain,” he said, citing clinical experience. Why? “They fear that the fact they are in pain might mean a recurrence, and they don’t want to deal with it,” he said. Or, “they don’t want to hurt the oncologist’s feelings.”
A third reason is “they don’t want to distract the physician from thinking about the cancer,” he said.
Even pain specialists can’t say for sure why the pain lingers. “We have little understanding of what causes this kind of pain,” Dworkin said.
A woman in pain after breast cancer treatment “should not be shy in talking to her physician about it,” Dworkin said. He advises such women to ask for a referral to a pain specialist.
The future of breast enlargement/boob job/ breast surgery is coming girls !
All right, bit of a different king of post for me but you know this is health related. At least mental health.
A new breast enhancement operation using fat from your own body will be on offer in Britain within months.
The £8,000 procedure uses fat extracted from where it is not wanted and injected into the skin of the breasts.
As well as providing a ‘two for one’ benefit over existing separate operations (take fat out of where you don’t want it), it could provide a more natural shape to augmented breasts and removes the need for synthetic implants, which have to be replaced after 10-15 years.
Nigel Mercer, president of the British Association of Aesthetic Plastic Surgeons (BAAPS) said: ‘There is a great deal of excitement about this, but we need to understand the science of it and the risks and benefits before we can present it as something that will be of enormous benefit to the general public.’
Among concerns about the process is the risk that fat could calcify and be mistaken for tumor during a breast scan.
Mel Braham, chairman of the Harley Medical Group, a large chain of cosmetic surgery clinics that will offer the technique, said trials were ‘astonishingly successful’ and had addressed concerns about the ‘two for one’ procedure.
He said: ‘Proper use of scans means there is little chance fat could be wrongly identified. This is the most exciting breakthrough in cosmetic and reconstructive surgery that I have seen over the last two decades.’
Mr Braham said he expected new natural breast augmentations to become more popular than implants over the next decade.
Advances in brain surgery to remove tumours – via brain mapping
Brain surgery is perhaps the oldest of the practiced medical arts. However much progress has been made in the last 20 years. An article from Physorg relates to the newest and safest way of practicing brain surgery for people with tumours.
Kim Delvaux was undergoing surgery to remove a brain tumor when doctors at Loyola University Hospital woke her up. Dr. Vikram Prabhu talked to her about her favorite topics — NASCAR and her kids.
“I can remember two distinct conversations,” said Delvaux, who lives in Downers Grove. “My friends can’t believe it, but it’s true.”
While she was awake, Prabhu gently probed brain tissue surrounding the tumor. If this affected Delvaux’s ability to speak or move, Prabhu would avoid those areas when he later removed the tumor. “We call these areas ‘No Fly Zones,’” he said.
The technique allows the surgeon to map out sites that are essential for speech and motor skills.
Surgeons have been doing various forms of “brain mapping” for decades. But advances in preoperative imaging, anesthesia and surgical tools and techniques have significantly improved outcomes. Consequently, surgeons are able to remove tumors in close proximity to critical parts of the brain, and patients are experiencing fewer cognitive and motor deficits, Prabhu said.
“Evidence in the medical literature supports the safety and efficacy of brain mapping,” Prabhu said. Prabhu is a neurosurgical oncologist and associate professor in the Department of Neurological Surgery, Loyola University Chicago Stritch School of Medicine.
Some patients remember little or nothing. Others remember fragments. Theresa Shepherd of Plainfield remembers Prabhu saying: “Terry, I need you to talk.” Carla Jones of Gary has just a vague memory. “I can remember Dr. Prabhu speaking to me, but it’s a little blurry,” she said.
