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https://www.readbyqxmd.com/read/29771138/rate-of-upper-extremity-injury-in-high-school-baseball-pitchers-who-played-catcher-as-a-secondary-position
#1
Elizabeth E Hibberd, Sakiko Oyama, Joseph B Myers
CONTEXT:   Many high school pitchers play another position after they have finished pitching for the day or on their rest days from pitching. Because of the cumulative demands on the arm, pitchers who also play catcher may have a greater risk of developing a throwing-related shoulder or elbow injury. OBJECTIVE:   To compare the rate of throwing-related upper extremity injuries between high school baseball pitchers who also played catcher as a secondary position and those who did not play catcher...
May 17, 2018: Journal of Athletic Training
https://www.readbyqxmd.com/read/29746146/predictors-of-elbow-torque-among-youth-and-adolescent-baseball-pitchers
#2
Kelechi R Okoroha, Vincent A Lizzio, Fabien Meta, Christopher S Ahmad, Vasilios Moutzouros, Eric C Makhni
BACKGROUND: There has been an increasing incidence of overuse elbow injuries among youth and adolescent pitchers. Pitch type has been implicated as a risk factor for excess torque at the medial elbow; however, this has not been definitively demonstrated. PURPOSE: To assess predictors of torque across the medial elbow in youth and adolescent pitchers with a mobile sensor. In addition, the authors aimed to determine the differences in elbow torque produced according to pitch type (fastball, curveball, changeup) and pitcher demographics...
May 1, 2018: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/29730137/differentiation-of-bony-and-soft-tissue-adaptations-of-the-shoulder-in-professional-baseball-pitchers
#3
Katherine E Reuther, Scott Sheridan, Stephen J Thomas
BACKGROUND: Baseball pitching places tremendous forces on the arm, which may lead to structural tissue adaptations that are represented by changes in rotational range of motion (ROM). These adaptations often include both bony and soft tissue; however, the contribution of each tissue to the change in motion is not always clinically attainable. The purposes of this study were to determine the adaptations of ROM, bone, and soft tissue bilaterally and to examine the correlation between clinical ROM and humeral retroversion (HR)-corrected ROM...
May 2, 2018: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/29687013/effects-of-game-pitch-count-and-body-mass-index-on-pitching-biomechanics-in-9-to-10-year-old-baseball-athletes
#4
Jim D Darke, Eshan M Dandekar, Arnel L Aguinaldo, Scott J Hazelwood, Stephen M Klisch
Background: Pitching while fatigued and body composition may increase the injury risk in youth and adult pitchers. However, the relationships between game pitch count, biomechanics, and body composition have not been reported for a study group restricted to 9- to 10-year-old athletes. Hypothesis: During a simulated game with 9- to 10-year-old athletes, (1) participants will experience biomechanical signs of fatigue, and (2) shoulder and elbow kinetics will correlate with body mass index (BMI)...
April 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29665612/differences-in-segmental-speeds-as-a-function-of-maturation-in-youth-baseball-pitchers
#5
Jessica K Washington, Gabrielle G Gilmer, Jeff W Barfield, Sarah S Gascon, Michael G Saper, Jeffrey R Dugas, James R Andrews, Gretchen D Oliver
The purpose of this study was to determine how stride length, segmental sequencing of the pelvis, trunk, humerus, and forearm velocities and accelerations, and the timing of these values change as youth mature. Thirteen youth baseball pitchers participated at three consecutive time points: visit 1 (10.7±1.3 years; 151.8±10.7 cm; 45.0±9.65 kg), visit 2 (11.5±1.6 years; 155.5±11.1 cm; 50.4±10.0 kg), and visit 3 (12.4±1.7 years; 161.5±11.7 cm; 56.4±10.8 kg). Participants executed three pitches for a strike to a catcher...
April 17, 2018: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29651893/differences-among-overhand-three-quarter-and-sidearm-pitching-biomechanics-in-professional-baseball-players
#6
Rafael F Escamilla, Jonathan S Slowik, Alek Z Diffendaffer, Glenn S Fleisig
The purpose of this study was to assess biomechanical differences among overhand, three-quarter, and sidearm arm-slot professional baseball pitchers. It was hypothesized that kinematic-and-kinetic differences would be found among the three groups, with sidearm pitchers demonstrating greater movement along the transverse plane, and overhead pitchers demonstrating greater movement along the sagittal plane. Based upon arm-slot-angle at ball-release, 30-overhand, 156-three-quarter, and 21-sidearm pitchers were tested using a 240-Hz-motion-analysis-system, and 37 kinematic-and-kinetic parameters were calculated...
April 13, 2018: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/29581995/role-of-rotational-kinematics-in-minimizing-elbow-varus-torques-for-professional-versus-high-school-pitchers
#7
Micheal J Luera, Brittany Dowling, Mitchel A Magrini, Tyler W D Muddle, Ryan J Colquhoun, Nathaniel D M Jenkins
Background: Elbow injury rates among baseball pitchers are rapidly rising. However, this increase has been most dramatic among high school (HS) pitchers. Purpose: To examine pitch velocity and the kinetic and kinematic characteristics of HS versus professional (PRO) pitchers to identify potential differences that may play a role in the increased risk of ulnar collateral ligament injury in youth pitchers. Study Design: Controlled laboratory study...
March 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29581141/risk-factors-for-and-prevention-of-shoulder-injuries-in-overhead-sports-a-systematic-review-with-best-evidence-synthesis
#8
REVIEW
Martin Asker, Hannah L Brooke, Markus Waldén, Ulrika Tranaeus, Fredrik Johansson, Eva Skillgate, Lena W Holm
OBJECTIVE: To assess the evidence for risk factors and prevention measures for shoulder injuries in overhead sports. DESIGN: Systematic review with best-evidence synthesis. DATA SOURCES: Medline (Ovid), PubMed (complementary search), Embase (Elsevier), Cochrane (Wiley), SPORTDiscus (Ebsco) and Web of Science Core Collection (Thomson Reuters), from 1 January 1990 to 15 May 2017. ELIGIBILITY CRITERIA FOR SELECTING STUDIES: Randomised controlled trials, cohort studies and case-control studies on risk factors or prevention measures for shoulder injuries in overhead sports...
March 26, 2018: British Journal of Sports Medicine
https://www.readbyqxmd.com/read/29562832/kinematic-and-kinetic-differences-between-left-and-right-handed-professional-baseball-pitchers
#9
Alek Z Diffendaffer, Glenn S Fleisig, Brett Ivey, Kyle T Aune
While 10% of the general population is left-handed, 27% of professional baseball pitchers are left-handed. Biomechanical differences between left- and right-handed college pitchers have been previously reported, but these differences have yet to be examined at the professional level. Therefore, the purpose of this study was to compare pitching biomechanics between left- and right-handed professional pitchers. It was hypothesised that there would be significant kinematic and kinetic differences between these two groups...
March 21, 2018: Sports Biomechanics
https://www.readbyqxmd.com/read/29545682/correlation-of-upper-limb-joint-load-withsimultaneous-throwing-mechanics-including-acceleration-parameters-in-amateur-baseball-pitchers
#10
Yoichi Kaizu, Hideomi Watanabe, Takehiko Yamaji
[Purpose] The purpose of this study was to provide information regarding the knowledge of mechanical principles related to the load applied to the shoulder and elbow during the pitching motion. [Subjects and Methods] The three-dimensional kinematics of body segments were measured in 19 amateur baseball players with a VICON motion capture system. The correlation between maximum shoulder internal torque, maximum elbow varus torque, and simultaneous kinematic parameters including joint angular acceleration and ball acceleration was investigated...
February 2018: Journal of Physical Therapy Science
https://www.readbyqxmd.com/read/29543598/decreased-hip-internal-rotation-increases-the-risk-of-back-and-abdominal-muscle-injuries-in-professional-baseball-players-analysis-of-258-player-seasons
#11
Christopher L Camp, Andrea M Spiker, John M Zajac, Dave Pearson, Alec M Sinatro, Joshua S Dines, Anil S Ranawat, Struan H Coleman
INTRODUCTION: The relationship of hip range of motion (ROM) to shoulder, elbow, abdominal, and back injuries remains undefined. METHODS: We assessed hip ROM on players reporting to Major League Spring Training for an organization over six seasons (2010 to 2015). Hip ROM was correlated with player abdominal, back, shoulder, and elbow injury status for those seasons using multivariate binomial logistic regression analysis. RESULTS: A total of 258 player-seasons (129 pitchers and 129 position players) resulted in 20 back and 35 abdominal injuries across all players and 28 elbow and 25 shoulder injuries in pitchers...
May 1, 2018: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/29537953/ulnar-collateral-ligament-reconstruction-past-present-and-future-past-present-and-future
#12
Christopher A Looze, Eric J Strauss, Laith M Jazrawi
Shoulder and elbow injuries have been described in baseball players as early as the 1940s. Ulnar collateral ligament (UCL) tears have been recognized as a significant source of disability for baseball players and have been seen in increasing frequency as training regimens and level of play have become more intense and rigorous. Our understanding and treatment of these injuries have also evolved over time. This article summarizes the evolution of the treatment of UCL tears and discusses future directions for the treatment and prevention of these injuries...
March 2018: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/29511703/shoulder-mri-abnormalities-in-asymptomatic-little-league-baseball-players
#13
Andrew T Pennock, Jerry Dwek, Emily Levy, Philip Stearns, John Manning, M Morgan Dennis, Amanda Davis-Juarez, Tracey Bastrom, Kenneth S Taylor
Background: Youth baseball is extremely popular in the United States, but it has been associated with shoulder pain and injury. The incidence of shoulder abnormalities in this athletic population has yet to be defined. Purpose: To examine abnormalities noted on magnetic resonance imaging (MRI) in the shoulders of asymptomatic Little League baseball players and to correlate these findings with the players' throwing history and physical examinations. Study Design: Case-control study; Level of evidence, 3...
February 2018: Orthopaedic Journal of Sports Medicine
https://www.readbyqxmd.com/read/29502701/editorial-commentary-changing-times-in-sports-biomechanics-baseball-pitching-injuries-and-emerging-wearable-technology
#14
EDITORIAL
Glenn S Fleisig
Research has shown relations between amount of baseball pitching and overuse injuries, as well as between poor mechanics and high loads on the elbow and shoulder. However, overuse injuries continue to be a problem from youth to professional sports. Emerging wearable technology may enable players, parents, coaches, leagues, and clinicians to monitor biomechanics during competition and training, reducing the risk of serious injury.
March 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29502695/editorial-commentary-the-shoulder-biceps-tendon-and-baseball-continue-their-controversial-relationship
#15
EDITORIAL
Christopher S Ahmad
The optimal treatment of shoulder SLAP tears in high-level baseball players remains highly controversial. In pitchers, many SLAP lesions are found incidentally on magnetic resonance imaging and may in fact be adaptive to the baseball pitcher's mechanics of throwing. Surgical repair of SLAP lesions requires lengthy rehabilitation, and outcomes have been similar to or worse than the results after nonoperative treatment. The treatment option of biceps tenodesis is an appealing alternative to SLAP repair, but the indications and technique of biceps tenodesis in the elite pitcher still need to be defined...
March 2018: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/29484242/trunk-lean-during-a-single-leg-squat-is-associated-with-trunk-lean-during-pitching
#16
Hillary A Plummer, Gretchen D Oliver, Christopher M Powers, Lori A Michener
Background: Impaired trunk motion during pitching may be a risk factor for upper extremity injuries. Specifically, increased forces about the shoulder and elbow have been observed in pitchers with excessive contralateral trunk lean during pitching. Because of the difficulty in identifying abnormal trunk motions during a high-speed task such as pitching, a clinical screening test is needed to identify pitchers who have impaired trunk motion during pitching. Hypothesis/Purpose: The purpose of this study was to determine the relationship between the degree of lateral trunk lean during the single-leg squat and amount of trunk lean during pitching and if trunk lean during pitching can be predicted from lean during the single-leg squat...
February 2018: International Journal of Sports Physical Therapy
https://www.readbyqxmd.com/read/29450826/return-to-throwing-after-shoulder-or-elbow-injury
#17
REVIEW
Terrance A Sgroi, John M Zajac
PURPOSE OF REVIEW: Throwing places high demands on the human body, and specific characteristics are developed over time unique to these athletes. When returning to throw after injury, it is important to follow a criterion-based progression that allows the body to be prepared appropriately for the stresses that throwing will require. There is currently a void in the literature for criteria-based progression that helps these athletes return to the highest level of play. RECENT FINDINGS: As injury rates continue to rise in baseball, there is increased evidence showing contributions of the core and lower extremity to the baseball pitch...
March 2018: Current Reviews in Musculoskeletal Medicine
https://www.readbyqxmd.com/read/29381423/glenohumeral-internal-rotation-deficit-and-risk-of-upper-extremity-injury-in-overhead-athletes-a-meta-analysis-and-systematic-review
#18
REVIEW
Robert A Keller, Anthony F De Giacomo, Julie A Neumann, Orr Limpisvasti, James E Tibone
CONTEXT: Current perception dictates that glenohumeral internal rotation deficit (GIRD) is a chronic adaptation that leads to an increased risk of pathologic conditions in the dominant shoulder or elbow of overhead athletes. OBJECTIVE: To determine whether adaptations in glenohumeral range of motion in overhead athletes lead to injuries of the upper extremity, specifically in the shoulder or elbow. DATA SOURCES: An electronic database search was performed using Medline, Embase, and SportDiscus from 1950 to 2016...
March 2018: Sports Health
https://www.readbyqxmd.com/read/29356641/shoulder-injuries-in-the-overhead-throwing-athlete-epidemiology-mechanisms-of-injury-and-imaging-findings
#19
Dana J Lin, Tony T Wong, Jonathan K Kazam
The unparalleled velocity achieved by overhead throwers subjects the shoulder to extreme forces, resulting in both adaptive changes and pathologic findings that can be detected at imaging. A key biomechanical principle of throwing is achieving maximum external rotation, which initially leads to adaptive changes that may result in a pathologic cascade of injuries. In addition to the well-established concepts of glenohumeral internal rotation deficit and internal impingement, osseous and soft-tissue injuries of the shoulder unique to overhead athletes are illustrated...
February 2018: Radiology
https://www.readbyqxmd.com/read/29318169/reasons-for-retirement-following-ulnar-collateral-ligament-reconstruction-among-major-league-baseball-pitchers
#20
Brandon J Erickson, Junyoung Ahn, Peter N Chalmers, Christopher S Ahmad, Bernard R Bach, Nikhil N Verma, Anthony A Romeo
Background: Ulnar collateral ligament reconstruction (UCLR) has become an increasingly common procedure among Major League Baseball (MLB) pitchers. The long-term effects of this procedure on the career of an MLB pitcher are largely unknown. Purpose/Hypothesis: The purpose of this study was to determine why and when MLB pitchers who underwent UCLR during their careers retired from baseball as compared with controls. We hypothesized that pitchers who underwent UCLR are no more likely than control pitchers to retire from elbow or shoulder problems...
December 2017: Orthopaedic Journal of Sports Medicine
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