Le Lézard
Classified in: Health, Sports and recreation
Subjects: CHI, TRI

Study Finds 8th and 9th Graders at Highest Risk for Re-tearing ACL after Surgery

NEW ORLEANS, March 8, 2018 /PRNewswire-USNewswire/ -- ACL injuries in young athletes who are still growing has become a rising clinical problem in recent years. While it is widely known that teenage athletes have a high rate of re-tearing their ACL, researchers from Hospital for Special Surgery (HSS) set out to determine if there is a specific age group more at risk within this population.

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Over 300 HSS patients were assessed in three groups based on the amount of skeletal growth remaining:

This prospective study evaluated two year clinical outcomes from these adolescent patients who underwent primary ACL reconstruction. It found that the rate of revision ACL reconstruction was higher and the return to sport rate was lower in Group 2.

The successful Group 1 cohort saw a 6 percent rate of revision and a perfect 100 percent return to sport. The Group 3 numbers were similar (6 percent revision rate, 94 percent return to sport) while the Group 2 segment saw a much higher 20 percent revision rate and only a 86 percent return to sport rate.

"There could be multiple factors associated with the less successful outcomes we observed in the Group 2 athletes," said Frank Cordasco, MD, MS, sports medicine surgeon at HSS and senior study author. "This Group 2 cohort bridges the divide between middle school and high school. At this age, when you miss a season and re-join your teammates in a competitive high school athletic environment, you have not developed the same sports-specific skills that this non-injured group did during the gap year, which can lead to another injury."

The ACL reconstructions in Groups 1 and 2 used the same hamstring graft, while Groups 2 and 3 utilized the same surgical technique. One size does not fit all for ACL injuries, and different techniques and materials are used based on age and type of tear. There has not been one widely-agreed upon method for patients who aren't yet fully grown.

"We are continually evaluating our techniques to improve our outcomes and lower this revision rate for Group 2 patients. They are too young to use the traditional patella tendon graft that we prefer with athletic young adults," said Dr. Cordasco. "We are assessing modifications in our technique which include the addition of a lateral ligament augmentation performed at the time of the ACL reconstruction, changing the graft choice from hamstring to quadriceps tendon which we believe may be a better choice for this high risk cohort of young athletes, and utilizing implant mediated guided growth when indicated."

Group 1 patients underwent an all-epiphyseal hamstring autograft ACL reconstruction, which was developed by Dr. Cordasco and Daniel Green, MD, MS, FAAP, FACS. This technique uses sockets instead of tunnels and provides improved graft incorporation and tendon-to-bone healing as a safer alternative for young patients.

"This study shows that our all-epiphyseal technique is successful in treating young athletes who are not yet skeletally mature," said Dr. Green, pediatric orthopedic surgeon at HSS and senior study author. "These patients used to be denied surgery because of their age, but we have developed an effective reconstruction technique to get them back in the game."

This study also illustrates the need for stronger communication to parents, coaches, PTs and athletic trainers about the risk of ACL injuries in this age group.

"If an 8th or 9th grader walks into a doctor's office with a torn ACL, the high risk needs to be communicated to the family," said Dr. Green. "Conversely, if it's a younger middle school athlete, the success rate is pretty good."

The recovery period is just as important when looking at preventing re-tears and returning to sport.

"To achieve optimal results after surgery, we counsel our patients to complete an ACL prevention injury program," added Dr. Green. "It's very important that these athletes only return to sports after they have regained great physical shape and learned prevention techniques."

HSS established the HSS Sports Safety Program in 2015 which launched the first ACL program customizable by skill level and sport type in 2016.

This study was presented today at this year's annual meeting for the American Academy of Orthopaedic Surgeons (AAOS).

About HSS l Hospital for Special Surgery

HSS is the world's leading academic medical center focused on musculoskeletal health. At its core is Hospital for Special Surgery, nationally ranked No. 1 in orthopedics (for the eighth consecutive year) and No. 3 in rheumatology by U.S. News & World Report (2017-2018). Founded in 1863, the Hospital has one of the lowest infection rates in the country, and was the first in New York State to receive Magnet Recognition for Excellence in Nursing Service from the American Nurses Credentialing Center four consecutive times. HSS is an affiliate of Weill Cornell Medical College. With a main campus in New York City and facilities in New Jersey, Connecticut and other parts of New York State, HSS provides care to more than 130,000 patients and performed approximately 32,000 surgical procedures in 2016. Patients came to HSS from 80 countries. In addition to Patient Care, HSS leads the field in research, innovation, and education. The HSS Research Institute comprises 20 laboratories and 300 staff members focused on leading the advancement of musculoskeletal health through prevention of degeneration, tissue repair, and tissue regeneration. The HSS Innovation Institute was formed in 2015 to realize the potential of new drugs, therapeutics and devices; the global standard total knee replacement was developed at HSS in 1948, and in 2016 HSS made 112 invention submissions. The HSS Education Institute provides continuing medical curriculum to more than 15,000 subscribing musculoskeletal healthcare professionals in 110 countries. Through HSS Global, the institution is collaborating with medical centers worldwide to advance the quality and value of care, and to make world-class HSS care more accessible to more people. www.hss.edu.

SOURCE Hospital for Special Surgery

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