Cracking knuckles_ is it bad_ what makes that sound_ _ the sacramento bee

Snap, crackle, pop. Gas works park fireworks If you’re a knuckle cracker, that familiar sound when you consciously pop your joints is like comfort food. Electricity generation by country You know it might not be so healthy for your hands or ankles, but it feels oh-so-good.

Robert G. E gaskell Cook knows that feeling. Gas utility worker The 55-year-old Sacramentan said he’s been popping his knuckles daily for decades. Static electricity vocabulary words Typically, it’s when he first sits down to work at his computer keyboard. Electricity history timeline “It’s like a concert pianist or baseball player warming up,” he said. Npower gas price reduction “It’s a ritual.”

That’s why Cook jumped at the chance to be one of 40 volunteers in a recent study by UC Davis radiology professor Dr. Bp gas prices nj Robert Boutin and orthopedic surgery professor Dr. Grade 6 electricity unit test Robert Szabo, who also see patients clinically. Kd 7 electricity socks The pair wanted to resolve two persistent questions about knuckle cracking: What causes that popping sound, and is it bad for your joints?

“Patients do come in all the time and want to know if knuckle cracking is bad (for their joints),” Boutin said. Electricity freedom system “It’s a real-world question that a lot of patients ask.”

Although popping knuckles is arguably the most common kind of joint cracking, it can also occur in the ankles, knees, back or neck. Gas unlimited houston texas Some say it’s a way to release tension or limber up. K gas constant For others, it’s simply a habit.

Boutin said the study’s inspiration came from an unexpected source: his 11-year-old daughter, who noticed classmates at school – mainly boys – loudly cracking their knuckles. Gas monkey live Her curiosity prompted Boutin to craft the study.

The 40 participants included 30 with a history of habitual knuckle cracking and 10 without. 93 gas near me Some said they had never intentionally cracked their knuckles; others were habitual, cracking them up to 20 times a day for the past 40 years.

Ranging in age from 18 to 63, the volunteers were invited to sit and methodically crack their knuckles. Electricity vs gasoline Techniques varied: Some pulled their fingers, others flexed or bent them back.

To determine what causes the crackle ’n’ pop, a tiny ultrasound device was hovered over their joints, capturing the sound effects of knuckles being cracked. 3 main gas laws More than 400 ultrasound images were taken. Electricity how it works The results were startling.

“It looked like a tiny Fourth of July explosion inside the hand,” said Boutin, who presented his study last month at the Radiological Society of North America in Chicago.

That flash, he explained, is caused by dissolved gas that sits in joint fluid. K electric company When you pull or bend a joint, it creates negative pressure, which releases the gas, forming tiny micro-bubbles. Bad gas 6 weeks pregnant When released quickly (i.e. C gastronomie traiteur avis in knuckle cracking), the escaping gas causes a bright flash that shows up in imaging. Electricity water analogy animation “It has a distinctive appearance on an ultrasound. Gas cap light Every single case, we heard the crack before we saw the physical flash.”

The UC Davis findings appear to contradict traditional explanations that the knuckle cracking sound is caused when the gas bubbles burst, like a balloon being popped.

Last April, a study by Canadian researchers using MRI imaging came to a similar conclusion: The knuckle cracking sound is created by the bubble’s formation itself.

In an email, study co-author Szabo, chief of the UC Davis hand, upper extremity and microvascular surgery department, said, “What are gratifying about our results are the questions raised about bubbles in human systems, particularly in joints. Gas key staking tool We were able to actually visualize the bubbles and correlate them with the sounds of cracking, supporting the theory of cavitation,” or the formation of a void or bubble inside liquid. 76 gas station jobs The formation of bubbles, he said, “is somewhat mysterious and still not full understood, but we got to see it in action in the joints of live people. Electricity song omd That’s exciting!”

The second part of the UC Davis study was to assess the potential harm from knuckle cracking. Gas leak los angeles Each participant was tested – before and after each ultrasound – by two hand/wrist orthopedic surgeons who checked for range of motion, grip strength and laxity (overextension of ligaments). Gas prices in texas 2015 The surgeons examined the hands without knowing who was or wasn’t a knuckle cracker, and were not told which joints had successfully been cracked.

The physical examinations by the hand-injury specialists found no problems in the joints of knuckle crackers. Gas natural fenosa “We did not find any swelling or adverse results like decreased grip strength,” said Boutin.

His conclusion: There’s no short-term harm in knuckle cracking. M gasol And there might even be a benefit: After a joint was cracked, it showed a “significantly increased range of motion” compared to joints that did not crack, Boutin said.

The UC Davis study appears to contradict a 1990 study that suggested knuckle cracking can cause joint swelling and weaken the grip and “should be discouraged.”

Given the prevalence of knuckle crackers – it’s estimated that 25 percent or more people do so – scholars have paid attention to the topic in recent years. Gas hydrates are used Most studies have debunked the warnings that knuckle cracking causes arthritis in joints.

Back in 1975, a study in the then-Western Journal of Medicine comparing 28 seniors and 28 schoolchildren found there was no evidence “that knuckle cracking leads to degenerative changes in the (hand) joints in old age.” But, the study noted wryly, “The chief morbid consequence of knuckle cracking would appear to be its annoying effect on the observer.”

In a more humorous vein, Dr. Gas prices going up to 5 dollars Donald Unger, a California allergist and longtime knuckle cracker in Thousand Oaks, was lauded in 2009 for his own self-styled research. Electricity lesson plans year 6 For more than 60 years, Unger had habitually cracked the knuckles of his left hand, but not his right. Electricity edison Using his own hands as a test case, he compared them for arthritis and found no difference. Thitima electricity sound effect That “research,” originally published in 1998 as a letter in the Arthritis & Rheumatism journal, earned him the Ig Nobel prize for medicine, a Harvard University-based parody of the Nobel Prize given to “improbable” or humorous scientific research.

The next step for the UC Davis researchers is to look at long-term effects of joint cracking on other areas besides hands. Electricity jokes riddles Boutin is in the midst of analyzing results from a global questionnaire of 1,800 individuals to determine if there are age, cultural or geographic differences among knuckle crackers.

Despite all the research, Boutin knows that some things don’t change about knuckle cracking: “Many people are really quite fond of knuckle cracking and find it hard to imagine life without its existence,” he said. Gas vs electric stove cost “For other people, it’s like fingernails on a blackboard.”