Injuries Of Upper Extremity Research Articles

Hand and Wrist Dog-Leash Injuries in the Outpatient Setting: A Review of 443 Cases.

Injuries sustained from dog leashes often result in visits to hand surgeons. This study presents an analysis of dog-leash-related upper-extremity injuries at a single orthopedic practice, including treatment options for these injuries, and guidance for prevention. We identified all outpatients who presented to a hand surgeon at a single institution from 2016 to 2021 following an upper-extremity injury related to a dog leash. Charts were reviewed and demographics, injury description and mechanism, and details of treatment were recorded. We identified 443 patients that presented for a dog-leash-related injury. The average time from injury to outpatient visit was 23 days. Surgery occurred following injury in 96 patients (21.6%). The most common injury locations were the ring finger, followed by the wrist, third finger, and fifth finger. Interphalangeal joint sprain was the most common injury type followed by phalangeal fracture. The majority of injuries were caused by the extremity catching in the leash while being pulled (337, 75.9%). Among the 96 patients requiring surgery, open reduction and internal fixation was the most commonly performed procedure followed by closed reduction with percutaneous pinning. For patients not requiring surgery (348, 78.4%), splinting or bracing was the most common treatment recommended. The majority of dog-leash injuries were caused by the patient's extremity catching in the leash as it was pulled, resulting in interphalangeal joint injures and phalanx fractures. The most common treatment required for these patients was nonoperative.

Integrating Motion Intention and Impedance Control in Teleoperated Robotic Rehabilitation for Upper Extremity Disorders

Abstract Due to the global pandemic in 2020, rehabilitation services had to adapt to virtual care to meet the needs of patients with a diversity of upper extremity disorders and injuries, from simple fingertip injuries to replanted extremities, while mitigating the spread of COVID-19. For patients who require occupational therapy in their rehabilitation, teleoperated robotic care can fulfill this need. Moreover, some clinical studies show that incorporating the active intention of patients into rehabilitation training enhances the effectiveness of therapies. This research aims to develop a bilateral impedance controller with a Franka Emika 7 DOF (degree-of-freedom) articulated robot using MATLAB, facilitating upper limb occupational therapy. Through this setup, the Franka robot will lead patients through various therapeutic exercises based on their motion intention, such as a pick-and-place exercise. The exercises’ efficacy is assessed through evaluations of torque, muscle strength, and jerking performance. During patients’ rehabilitation exercises with the Franka Robot, we anticipate observing decreased muscle activity alongside a smooth, assist-as-needed trajectory. This method will allow a patient to perform complex movements essential for daily activities quicker than traditional occupational therapy.

Trends in Upper Extremity Saw Injuries From 2003 to 2022.

Saws are a common source of upper extremity injury. There have been several commercial and government-mandated safety mechanisms designed to reduce the number of saw injuries. We aim to assess the trends in the incidence and impact of saw-related upper extremity injuries over the last 2 decades. The National Electronic Injury Surveillance System database was queried from January 2003 to December 2022 for upper extremity injuries caused by saws. Summary statistics for primary body part injured and diagnosis were calculated. Linear regression was performed to evaluate trends in the number of injuries over time. An estimated 1.38 million injuries (weighted) presenting to emergency departments were reported from January 2003 to December 2022. Patients had a mean age of 50.5 ± 18.1. Digits (82.2%) accounted for most injuries, followed by hands (11.9%). The lower arm (3.4%), wrist (1.66%), shoulder (0.3%), elbow (0.2%), and upper arm (0.2%) accounted for fewer injuries. There was a downtrend in number of saw injuries over the study period (R = 0.83, R2 = 0.69, p < .001). Subgroup analysis showed decreases in number of injuries to fingers (R = -0.82, R2 = 0.67, p < .001) and wrists (R = -0.61, R2 = 0.37, p = .004). The most common diagnoses were lacerations (69.7%), fractures (12.6%), and amputations (9.9%). Upper extremity saw injuries have significantly decreased over the last 20 years. The fingers and hands account for the vast majority of saw injuries, resulting most commonly in lacerations, fractures, and amputations. IV.

Insights from a hospital database: injuries among children under 6 years old due to falls

Abstract Background Pediatric injuries represent a significant public health concern globally, contributing to substantial morbidity and mortality among children. In Georgia, limited data exists regarding pediatric injuries. The aim of the study was to analyze epidemiological characteristics and trends of pediatric injuries among children aged under 6 years who received treatment in hospitals across whole country. Methods NCDC hospitalization database for 2015-2022 was used for the study. Results Over the study period, a total of 5979 children under the age of 6 received treatment in all hospitals across Georgia. The highest number of hospital admissions were registered in 2019. 60% were boys and 40% were girls of the hospitalized patients. Boys were predominant across all age groups, with the highest proportion among children aged 5 years old. There was a significant variation in hospital admissions according to the seasons, with the highest admissions occurrence in summer. As for the cause of admission, 37% resulted from falls on the same level, 10% from falls between different levels, 7% involved falling from a bed, 4% from falling out or through a building, and 4% from falling down stairs. The cause of falls was unspecified in 23%. In 72% of cases, the injured body part was the head, 17% were upper extremity injuries, and 7% were lower extremity injuries. Of the patients, 90% recovered, 2% discontinued treatment, 8% were transferred, and the outcome was fatal for 0.23% of patients. Among the fatal cases, 36% resulted from falls from, out of, or through a building, 29% from falls between different levels, 14% from falling or jumping, 7% from falls involving a bed, and 7% from falls on the same level. Conclusions These findings underscore the importance of preventive measures, especially regarding fall prevention, to reduce the incidence of pediatric injuries in Georgia. Key messages • There was a significant variation in hospital admissions according to the seasons, with the highest admissions occurrence in summer. • These findings underscore the importance of preventive measures, especially regarding fall prevention, to reduce the incidence of pediatric injuries in Georgia.

Upper extremity orthopedic softball injuries presenting to the emergency department: epidemiology across the lifespan

ABSTRACT Background Softball is a popular lifetime sport due to its inclusion of both fastpitch and slowpitch varieties, although associated injuries are common. Objective To compare softball injury rates across patient sex, age, race, injury location, mechanism, and activity. Methods The National Electronic Injury Surveillance System (NEISS) was queried for all upper extremity softball injuries in patients 10–85+ years old presenting to United States emergency departments between 2012 and 2021. Results Significantly more of the 178,303 total weighted upper extremity injuries occurred in female (68.1%) than male (31.9%) athletes (p < .001). Male patients (mean 34.9 ± 13.6 years) were older than female patients (17.4 ± 8.4; p = .019). The average incidence rate of UE injuries from 2012–2021 was 187.9 per 100,000 persons, with a significant decrease in injury incidence across the timespan (p < .001). The lowest annual injury incidence (74.7 per 100,000 persons) occurred in 2020. In patients 10–18 years old, female patients accounted for 95.1% of all injuries, whereas male patients accounted for 72.1% of all injuries in patients aged ≥23. Compared to male patients, females more frequently experienced hand (p < .001), lower arm (p = .007), shoulder (p < .001), and wrist (p < .001) injuries in patients 10–18 years old, finger (p < .001), upper arm (p = .016), and wrist (p < .001) injuries in patients 19–22, and finger injuries (p < .001) in patients aged 23 +. Across all ages, the greatest proportion of injuries were treated and released (p < .001). Most injuries occurred while fielding (41.8%) and due to player-ball contact (36.8%). Conclusion Softball injury ED presentations declined across a decade, including a precipitous drop and rebound effect due to the COVID-19 pandemic. Across the lifespan, upper extremity injuries progressively shifted from female-predominant in younger athletes to male-predominant in adults.

The Incidence of Shoulder and Elbow Injuries in High School and Collegiate Softball Athletes: A Systematic Review.

Despite increased youth and adolescent participation in fast-pitch softball and the reporting of upper extremity injuries, there remains a relative paucity of research examining shoulder and elbow injuries in high school and collegiate softball athletes. To evaluate the reported incidence, setting, and positional factors associated with shoulder and elbow injuries in high school and collegiate fast-pitch softball players. PubMed, Ovid, Medline, EMBASE, Scopus, Cochrane Central, and Clinicaltrials.gov. English-language articles reporting the incidence of shoulder and/or elbow injuries occurring in high school or collegiate fast-pitch softball players were included. Biomechanical studies, review articles, abstract only texts, previous systematic reviews, and meta-analyses were excluded. Systematic review. Level 4. Two reviewers independently evaluated studies. Data related to the reported incidence of shoulder and elbow injuries, injury setting, position, and rate of return to play after injury were recorded. A total of 22 studies were identified. In high school athletes, shoulder injury rates ranged from 0.88 to 1.14 per 10,000 athletic exposures (AE), with elbow injury rates ranging from 0.41 to 0.71 per 10,000 AE. In collegiate athletes, reported injury rates ranged from 3.76 to 5.93 per 10,000 AE for shoulder and 1.5 to 3.39 per 10,000 AE for elbow injuries. Shoulder and elbow injuries were reported more commonly during competition in high school athletes, and with greater frequency in the practice setting in collegiate athletes. No association between injury incidence and position was appreciated at either the high school or collegiate level. Most (81%-96%) athletes were able to return to sport within 3 weeks of injury. The incidence of shoulder and elbow injuries was greater in collegiate softball athletes than in high school athletes.

Impact of Spaceflight on Upper Extremity Orthopedic Health

INTRODUCTION: With increased access to commercial spaceflight and space tourism, plus a push for longer duration spaceflights, it is especially important to understand the impact of spaceflight on musculoskeletal health. Upper extremity injuries are the most common musculoskeletal injuries in spaceflight. It is, therefore, vital to determine the changes to the upper extremities during spaceflight. The purpose of this study was to examine the state of knowledge on the impact of spaceflight on upper extremity orthopedic health, and to identify knowledge gaps and future areas of research. METHODS: A literature review was performed and studies and reports that amassed data on shoulder, elbow, wrist, and hand health were included. RESULTS: Spaceflight decreases bone mineral density in the upper extremities and increases risk of fracture, especially upon return to gravitational environments. Spaceflight does not uniformly affect all muscles; in the shoulder, the various muscles crossing the joint appear to be variably affected: the deltoid experiences a greater degree of atrophy than the rotator cuff muscles. Spaceflight additionally affects the peripheral nervous system, with astronauts experiencing hand numbness and loss of manual dexterity but cause of these symptoms is undetermined. Spacesuits have also been implicated in causing upper extremity injury, especially while training for or performing extravehicular activities. DISCUSSION: While upper extremity orthopedic health in spaceflight is incompletely understood, known adaptations increase risk for weakening and injury. Existing research provides valuable information for best practices, but there is still much to be discovered to optimize upper extremity health in spaceflight. Fiedler B, Jami M, Rakauskas T, Ahmed AS. Impact of spaceflight on upper extremity orthopedic health. Aerosp Med Hum Perform. 2024; 95(10):777–783.

Upper Extremity Injuries in Swimming

Given the rise of swimming as a casual, competitive, artistic, and health-related activity in the past few years, it has become increasingly important to look at injuries that can be caused by swimming. Through studying swimming-related injuries to the upper extremities, swimmers can understand how to prevent major, long-lasting injuries and how to treat these injuries if they occur. The National Electronic Injury Surveillance System (NEISS) Database was used to analyze data on swimming-related injuries to the upper extremities in the last five years. In these past five years, 82,834 injuries to the upper extremities of swimmers have been reported to the Emergency Department (ED). The study highlights the most common upper-extremity-related injury in swimming and how to prevent it, as well as how to treat it. In addition, it is vital to note that future research could delve into possible equipment that would help prevent the injury altogether.

Limited Total Arc Glenohumeral Rotation and Shoulder Biomechanics During Baseball Pitching.

Upper extremity injuries in baseball pitchers cause significant time loss from competing and decreased quality of life. Although shoulder range of motion (ROM) is reported as a key factor to prevent potential injury, it remains unclear how limited glenohumeral ROM affects pitching biomechanics which may contribute to upper extremity injuries. To investigate how pitchers with decreased total arc glenohumeral ROM of the throwing arm differed in upper extremity pitching kinematics and kinetics as well as ball velocity compared with pitchers with greater levels of glenohumeral ROM. Cross-sectional study. Laboratory. Fifty-seven baseball pitchers (ages 18-24) were divided into either control (≥160° total arc) or lower ROM (<160° total arc) groups. The mean glenohumeral ROM deficits, pitching kinematic and kinetic outcomes, and ball velocity were compared between groups. The control group demonstrated significantly less deficit in total arc ROM between arms than the lower ROM (control: -1.5° ± 10.0°; lower ROM: -12.4° ± 13.9°; P < .001). While the lower ROM group displayed less maximal shoulder external rotation (ER) while pitching, the control group had significantly less difference in ROM between maximal shoulder ER while pitching and clinically measured ER (lower ROM: 64.4° ± 12.1°; control: 55.8° ± 16.6°; P = .025). The control group had significantly faster ball velocity than the lower ROM group (control: 85.0 ± 4.3 mph; lower ROM: 82.4 ± 4.8 mph; P = .024). Pitchers with decreased total arc glenohumeral ROM (<160° total arc) may undergo overstretching toward ER in the shoulder during the late cocking phase. Pitchers with higher total arc ROM can pitch the same or faster ball without increasing loading in the upper extremity. Total arc glenohumeral ROM measurement can be a clinical screening tool to monitor shoulder condition over the time, and pitchers with limited total arc ROM might be at higher risk of shoulder injury.

Associations Between Diagnosed Concussion And Upper Extremity Injury In Community Rugby Players

Associations Between Diagnosed Concussion And Upper Extremity Injury In Community Rugby Players

The role of 3D cinematic rendering in the evaluation of upper extremity trauma.

Traumatic upper extremity injuries are a common cause of emergency department visits, comprising between 10-30% of traumatic injury visits. Timely and accurate evaluation is important to prevent severe complications such as permanent deformities, ischemia, or even death. Computed tomography (CT) and CT angiography (CTA) are the favored non-invasive imaging techniques for assessing upper extremity trauma, playing a crucial role in both the treatment planning and decision-making processes for such injuries. In CT postprocessing, a novel 3D rendering method, cinematic rendering (CR), employs sophisticated lighting models that simulate the interaction of multiple photons with the volumetric dataset. This technique produces images with realistic shadows and improved surface detail, surpassing the capabilities of volume rendering (VR) or maximal intensity projection (MIP). Considering the benefits of CR, we demonstrate its use and ability to achieve photorealistic anatomic visualization in a series of 11 cases where patients presented with traumatic upper extremity injuries, including bone, vascular, and skin/soft tissue injuries, adding to diagnostic confidence and intervention planning.

Prevalence and Risk Factors of Upper Extremity Injuries in Indoor Bouldering: A Cross-Sectional Study.

To describe the prevalence and risk factors associated with upper extremity injuries among indoor bouldering practitioners, focusing on dynamic movements and specific training methods. We conducted a cross-sectional study with 35 indoor bouldering climbers from a metropolitan area. Data were collected through an adapted online questionnaire and in-person orthopedic evaluations by certified specialists. Statistical analysis was performed using Stata 18 (StataCorp LLC, College Station, TX), calculating the prevalence of pain and injuries and associations between dynamic movements and specific injuries. The sample was predominantly male (80%, n = 28/35), with a mean age of 25.9 years. Shoulder anterior apprehension was significantly associated with dynamic climbing styles (p = 0.028), with a prevalence difference of 0.3(95% CI: 0.04, 0.57). Finger pulley and shoulder injuries affected 22.9% (n = 8/35) and 25.7% (n = 9/35) of participants, respectively. Our study found a significant association between dynamic movements and upper extremity injuries in bouldering climbers, highlighting the pressing need for injury prevention strategies. Despite climbing being an overhead sport, our findings suggest distinct pathophysiology from the thrower's shoulder, necessitating further investigation.

Considerations of throwing athletes with upper extremity injury when completing the Single Assessment Numeric Evaluation (SANE).

The Single Assessment Numeric Evaluation (SANE) is a widely used patient-reported outcome (PRO) measure that provides an efficient, but limited view of patient perceptions of health. Knowledge of what throwing athletes with upper extremity injury consider when answering the SANE would inform score interpretation and increase its value for clinical decision-making in this patient population. To investigate the global rating of the SANE and its ability to capture constructs of health reflected in patient-reported outcome measures that are commonly used in throwing athletes with upper extremity sport-related injury. Cross-sectional study. Retrospective database review. De-identified patient records of baseball and softball athletes diagnosed with upper extremity sport-related injury between October 2009 and June 2021 were reviewed. Primary outcomes were scores on the SANE; Functional Arm Scale for Throwers (FAST) total; Disabilities of the Arm, Shoulder and Hand (DASH) total; and Global Rating of Daily Activities (GRODA). The first administration of all PROs that patients completed post-injury were analyzed as potential predictors of SANE scores. The proportion of variance uniquely accounted for in the SANE by each predictor (R2) variable was estimated. Fifty-five patients completed PRO measures. The FAST total uniquely accounted for 32.9% (P <.001), the GRODA uniquely accounted for 11.6% (P <.001), and the DASH total uniquely accounted for 4.6% (P=.036) of the variance in the SANE score. Overall, the predictors accounted for 49.2% of the variance in the SANE score (P <.001). Given that the SANE captures multiple constructs of health, it may be useful in gathering a quick, broad view of throwing athletes' perception of their health. When SANE scores suggest diminished health, then multi-item PROs should be considered to further explore constructs of health most impacted.

Pediatric Off-Road Vehicle Injuries: Side-by-Sides Worse for the Upper Extremity.

Side-by-side (SXS) and all-terrain vehicles (ATVs) are different off-road vehicles (ORVs) but often categorized together in the literature. We hypothesized pediatric upper extremity (UE) fracture patterns and injury severity scores (ISS) differ between ORV types. The authors' home-state trauma repository identified 157 pediatric patients aged 0 to 17 years with UE fractures after ORV accidents during 2011-2021. ORV injuries, fracture type, and procedures were identified using International Classification of Diseases, 9th Revision and 10th Revision coding followed by manual chart review or phone calls. We identified specific ORV type, driver/passenger status, and restraint use to compare differences between fracture characteristics, number of surgeries, and ISS. Groups were compared for differences at P < 0.05 significance. Among 157 ORV injuries, 75 resulted from ATVs (48%), 50 SXSs (32%), and 32 from all other vehicles (20%). Average age was 12 years, and 49% (n = 77) required surgery. SXS injuries had significantly higher open fracture rates (42%, n = 21) compared with ATVs (7%, n = 5) and all other ORV types (16%, n = 5; P < 0.0001). Seventy percent of fractures (n = 35) sustained after SXS accidents required surgery compared with 41% (n = 31) for ATVs and 34% (n = 11) for all other ORV types ( P < 0.001). SXS drivers had 71% left-sided injuries, whereas 85% passengers had right-sided injuries ( P < 0.0001). Patients younger than 13 years (n = 73) had significantly higher surgery rates (59%) compared with 40% for those 13 years and older (n = 84; P = 0.02). There were no significant differences in mean ± SD ISS between ATV (8 ± 6), SXS (8 ± 6), and other vehicles (7 ± 4; P = 0.34). UE fractures caused by SXS were more likely to be open and require surgery compared with ATVs and other ORVs. SXS drivers were more likely to sustain left-sided injuries, whereas passengers had significantly higher right-sided injuries. Patients younger than 13 years were more likely to require surgery compared with teenagers.

Injury Patterns in Fencing Athletes - A Retrospective Review.

Fencing is a unique and increasingly popular sport, but limited data exist regarding related injuries. To examine the types of injuries incurred by fencing athletes, and to analyze associations between age, sex, and hand dominance with type and location of injury. Cross-sectional. Retrospective chart reviews were performed to evaluate fencing related injuries in athletes evaluated in the sports medicine and orthopedic clinics of a large teaching hospital. One hundred and eighty-six patients (98 male, 88 female) were included. Average age at time of injury was 14.6 years (range 9 - 32 years). 73% of injuries involved the lower extremity, 16% involved the upper extremity and 10% affected the back. In the lower extremity, the knee (49%), ankle (16%) and hip (11%) were most commonly affected. 80% of injuries were treated with physical therapy. Only 5% required surgical intervention. Injuries of both upper and lower extremities were more commonly seen on the athlete's dominant side, and the majority of injuries (77%) occurred in athletes 13 years or older. The majority of injuries in these fencing athletes affected the lower extremity, most commonly the knee. Extensor mechanism dysfunction, primarily patellofemoral pain, was the most common diagnosis. Hand dominance, patient age, and patient sex did affect different injury characteristics. 2b.

Subsequent musculoskeletal injury after concussion in National Football League players

ObjectiveTo assess whether National Football League (NFL) players diagnosed with a concussion have an increased risk of injury after return to football.MethodsA retrospective cohort study analysed the hazard of subsequent...

Feasibility and Validity of Wearable Sensors for Monitoring Temporal Parameters in Manual Wheelchair Propulsion.

Upper extremity pain and injury are among the most common musculoskeletal complications manual wheelchair users face. Assessing the temporal parameters of manual wheelchair propulsion, such as propulsion duration, cadence, push duration, and recovery duration, is essential for providing a deep insight into the mobility, level of activity, energy expenditure, and cumulative exposure to repetitive tasks and thus providing personalized feedback. The purpose of this paper is to investigate the use of inertial measurement units (IMUs) to estimate these temporal parameters by identifying the start and end time of hand contact with the push-rim during each propulsion cycle. We presented a model based on data collected from 23 participants (14 males and 9 females, including 9 experienced manual wheelchair users) to guarantee the reliability and generalizability of our method. The obtained outcomes from our IMU-based model were then compared against an instrumented wheelchair (SMARTWheel) as a reference criterion. The results illustrated that our model was able to accurately detect hand contact and hand release and predict temporal parameters, including the push duration and recovery duration in manual wheelchair users, with the mean error ± standard deviation of 10 ± 60 milliseconds and -20 ± 80 milliseconds, respectively. The findings of this study demonstrate the potential of hand-mounted IMUs as a reliable and objective tool for analyzing temporal parameters in manual wheelchair propulsion. IMUs offer significant strides towards inclusivity and accessibility due to their portability and user-friendliness and can democratize health monitoring of manual wheelchair users by making it accessible to a broader range of users compared to traditional technologies.

Upper-Extremity Injuries in a Level 1 Trauma Center Following Border Wall Height Increase

PurposeFrom 2018-2019, the height of over 400 miles of southern border wall was raised to 30 feet. Our aim was to evaluate the impact of the increase in border wall height on upper extremity injuries sustained via barrier fall. MethodsA retrospective review of patients admitted with upper extremity injuries sustained via border wall fall between January 2015 and December 2022 at a Level 1 trauma center serving the United States- Mexico border. Patients admitted between 2015-2018 were included in the pre-increase group, and those admitted between 2019-2022 were included in the post-increase group. Demographic data, injury severity metrics, fracture characteristics, operative treatments, hospital charges, and lengths of stay were compared. Results110 patients were identified, with 16 pre-increase and 94 post-increase. Following the barrier height increase, patients had higher injury severity scores. Radial fractures were most common pre- and post-increase and accounted for nearly a third of all fractures. Post-increase upper extremity trauma patients required more operative events (2.15 ± 2.10 vs. 1.44 ± 0.73 pre-increase). The average cost for each patient’s hospital stay also quadrupled after the increase in wall height ($397,632 ± $1,057,574 vs. $98,978 ± $84,169 pre-increase). ConclusionsThe increase in overall injury severity and costly inpatient treatment of upper extremity injuries among patients who fell from the border following construction has placed additional stress on an already strained healthcare system.

Epidemiology of High-Energy Distal Radius Fractures.

Background: High-energy distal radius fractures have not been as well studied as the more common osteoporotic fractures. Differences between these two groups of fractures have implications on the prevention and clinical management of such injuries. Methods: A retrospective review was conducted of all patients in our institution who presented with distal radius fractures within the period of a year. Demographic data, injury mechanism, fracture classification, associated injuries and work-related status were obtained and analysed. Results: High energy fractures made up 27.1% of the cases. Falls from height were the most common cause, followed by motor vehicle accidents. These high-energy fractures were more commonly seen in males, younger patients (average age 41 vs. 61 years), and in workplace accidents. These injuries were also more likely to be bilateral and associated with an additional ipsilateral upper extremity injury. The high-energy group was also more likely to have an AO type B fracture. Conclusions: A substantial proportion of distal radius fractures seen in our population are high-energy injuries. Their contrasting patient and injury profiles suggest that they should be considered separately from osteoporotic fractures. Level of Evidence: Level IV (Therapeutic).

The Effect of Sport Specialization on Injury Risk in NCAA Athletes: Results From the SAFE Consortium.

Youth athletes are beginning to specialize in a single sport more often. Previous studies in sports medicine and orthopedics have shown an association between intensity of sport specialization and incidence of injuries. This study is the first of its kind to explore the effects of early sport specialization on injury risk through a multicenter framework with a concentration on NCAA athletics. Retrospective cohort study. SAFE Consortium. A total of 211 collegiate athletes from the NCAA's 3 levels of competition: Division I, II, and III. Data were collected by the SAFE investigators. N/A. Participants completed a questionnaire about their demographics, sport participation, specialization status, physical injuries, recovery period, and treatment method. Specialization status was calculated with a previously published 3-point scale: low, moderate, and high. Injuries were categorized as upper extremity injuries (UEIs) and lower extremity injuries (LEIs). Highly specialized athletes were more likely to report UEIs and LEIs than low specialized athletes ( P < 0.0001). Moderate specialization, in contrast to low specialization, was associated with a higher likelihood of LEIs ( P = 0.03) but not UEIs ( P = 0.052). Highly specialized athletes were more likely to report an injury of any kind. The SAFE investigators found high specialization was associated with a history of UEIs and LEIs. Return to play was longer for highly specialized athletes versus low specialized athletes (112 days and 85 days, respectively). Highly specialized athletes were more likely to be from Division I and to require surgery.