>> Jessica: PICKLE BALL IS THE FAST FEST GROWING SPORT IN THE UNITED STATES WITH MORE THAN 5 MILLION PLAYERS ACROSS THE COUNTRY. >> Ukee: BUT AS MORE PEOPLE ARE PLAYING DOCTORS ARE SEEING A SURGE IN PICKLE BALL RELATED INJURIES.

>> Jessica: HEALTH REPORTER STEPHANIE STAHL. DO YOU PLAY? >> Reporter: I DON'T. >> Jessica: WE NEED TO TRY IT. >> Reporter: THERE'S A REASON WHY. [ LAUGHTER ] >> Reporter: HELLO! STRAINS,.

SPRAINS AND FRACTURES. THOSE ARE THE MOST COMMON INJURIES LINKED TO PICKLE BALL BUT IT'S POPULARITY CONTINUES TO SOAR AND REACHED A NEW KIND OF CELEBRITY STATUS. JACKIE STARTED PLAYING PICKLE BALL DURING THE PANDEMIC AND NOW SHE CAN'T STOP.

>> IT'S FUN. IT'S ADDICTING. >> Reporter: PICKLE BALL HAS EXPLODED IN POPULARITY AND SO HAVE THE INJURIES. >> MY WHOLE KNEE WAS SWOLLEN AND I HAD PAIN IN THE KNEE, PAIN IN MY HIP. >> Reporter: PLAYED ON WHAT.

LOOKS LIKE A SMALLER TENNIS COURT A LOT OF STOPPING AND STARTING AND QUICK MOVEMENTS WITH SPECIAL ATTENTION TENSION SO CALLED KITCHEN THE AREA ON EITHER SIDE OF THE NET THAT'S A NO VOLLEY ZONE. >> ABRUPT MOVEMENTS CAN REALLY PUT A LOWER EXTREMITY AT RISK AS.

THEY PLANT AND TURN AND THAT STRAINS THE CALF OR THE ACHILLEAS OR CAUSES AN ANKLE ROLE. >> Reporter: DOCTOR STEVEN STASH WITH THE ROTHMAN ORTHOPEDIC INSTITUTE SAYS IN ADDITION TO LEG AND BACK INJURIES, PICKLE BALL CAN BE.

TOUGH ON ELBOWS AND SHOULDERS. >> VERY POPULAR IN THE MORE SENIOR POPULATION. >> Reporter: REPORT IN THE JOURNAL OF EMERGENCY MEDICINE ESTIMATES THERE ARE 19,000 PICKLE BALL INJURIES A YEAR WITH 90% OF THEM AFFECTING PEOPLE 50 AND OLDER.

>> IT'S SOMETIMES VERY FORCEFUL MOVEMENTS ON YOUR JOINTS. >> Reporter: JACKIE HAD FLUID DRAINED FROM HER KNEE ALONG WITH GEL INJECTIONS AND A CORTISONE SHOT. DOCTORS SAY WARMING UP AND STRETCHING BEFORE AND AFTER YOU PLAY WILL HELP PREVENT INJURIES.

AND GROWING NUMBER OF PICKLE BALL PATIENTS. >> I OFTEN MAKE A JOKE WITH MY PATIENTS COME IN THE ROOM. I LOVE PICKLE BALL. PICKLE BALL PAYS MY BILLS. [ LAUGHTER ] >> Reporter: SO IT'S KEEPING DOCTORS BUSY.

AND PICKLE BALL IS SO POPULAR NOW IT'S GETTING ITS OWN ALL STAR CELEBRITY TOURNAMENT. STEPHEN COLBERT AND FUNNY OR DIE TEAMED UP FOR BUCKLED A NEW TWO-HOUR SPORTS COMEDY SPECIAL WITH STARS MEETING FOR THE COVETED COLBERT CUP. YOU CAN SEE.

Stephanie Stahl reports.