Ankle Dorsiflexion in Adolescent Athletes

2003 ◽  
Vol 93 (4) ◽  
pp. 312-314 ◽  
Author(s):  
Amol Saxena ◽  
Will Kim
Keyword(s):  
High School ◽  
Lower Extremity ◽  
Ankle Dorsiflexion ◽  
T Test ◽  
Ankle Injury ◽  
High School Athletes ◽  
Adolescent Athletes ◽  
Left Ankle ◽  
History Of ◽  
The Right

Ankle equinus has been proposed to be associated with lower-extremity pathology. Physiologically normal measurements have been quantified in various populations. Forty high-school athletes (16 girls and 24 boys) without a history of ankle injury had ankle dorsiflexion measured with the knee extended and flexed by an experienced evaluator using a goniometer with the subjects supine. The group mean ± SD dorsiflexion for the right ankle was 0.35° ± 2.2° with the knee extended and 4.88° ± 3.23° with the knee flexed. The values for the left ankle were –0.6° ± 2.09° and 4.68° ± 3.33°, respectively. There were no statistically significant differences between limbs using the Student t-test. In girls, values for right and left ankle dorsiflexion were 0.19° ± 2.1° and –0.7° ± 2.3°, respectively, with the knee extended and 4.88° ± 3.59° and 4.88° ± 3.07°, respectively, with the knee flexed. In boys, these values were 0.46° ± 2.3° and –0.5° ± 1.98° with the knee extended and 4.88° ± 3.04° and 4.54° ± 3.55° with the knee flexed. There were no statistically significant differences between boys and girls. Ankle dorsiflexion in asymptomatic adolescent athletes is approximately 0° with the knee extended and just less than 5° with the knee flexed. (J Am Podiatr Med Assoc 93(4): 312-314, 2003)

A Prospective Study on the Effect of Sport Specialization on Lower Extremity Injury Rates in High School Athletes

2017 ◽  
Vol 45 (12) ◽  
pp. 2706-2712 ◽  
Author(s):  
Timothy A. McGuine ◽  
Eric G. Post ◽  
Scott J. Hetzel ◽  
M. Alison Brooks ◽  
Stephanie Trigsted ◽  
...  
Keyword(s):  
High School ◽  
Lower Extremity ◽  
Sport Participation ◽  
Large Population ◽  
Lower Extremity Injury ◽  
High School Athletes ◽  
Adolescent Athletes ◽  
School Year ◽  
Increased Risk ◽  
Interscholastic Athletes

Background: Sport specialization is associated with an increased risk of musculoskeletal lower extremity injuries (LEIs) in adolescent athletes presenting in clinical settings. However, sport specialization and the incidence of LEIs have not been investigated prospectively in a large population of adolescent athletes. Purpose: To determine if sport specialization was associated with an increased risk of LEIs in high school athletes. Study Design: Cohort study; Level of evidence, 2. Methods: Participants (interscholastic athletes in grades 9-12) were recruited from 29 Wisconsin high schools during the 2015-2016 school year. Participants completed a questionnaire identifying their sport participation and history of LEIs. Sport specialization of low, moderate, or high was determined using a previously published 3-point scale. Athletic trainers reported all LEIs that occurred during the school year. Analyses included group proportions, odds ratios (ORs) and 95% CIs, and days lost due to injury (median and interquartile range [IQR]). Multivariate Cox proportional hazard ratios (HRs) with 95% CIs were calculated to investigate the association between the incidence of LEIs and sport specialization level. Results: A total of 1544 participants (50.5% female; mean age, 16.1 ± 1.1 years) enrolled in the study, competed in 2843 athletic seasons, and participated in 167,349 athlete-exposures. Sport specialization was classified as low (59.5%), moderate (27.1%), or high (13.4%). Two hundred thirty-five participants (15.2%) sustained a total of 276 LEIs that caused them to miss a median of 7.0 days (IQR, 2.0-22.8). Injuries occurred most often to the ankle (34.4%), knee (25.0%), and upper leg (12.7%) and included ligament sprains (40.9%), muscle/tendon strains (25.4%), and tendinitis/tenosynovitis (19.6%). The incidence of LEIs for moderate participants was higher than for low participants (HR, 1.51 [95% CI, 1.04-2.20]; P = .03). The incidence of LEIs for high participants was higher than for low participants (HR, 1.85 [95% CI, 1.12-3.06]; P = .02). Conclusion: Athletes with moderate or high sport specialization were more likely to sustain an LEI than athletes with low specialization. Sports medicine providers need to educate coaches, parents, and interscholastic athletes regarding the increased risk of LEIs for athletes who specialize in a single sport.

scholarly journals Association of Competition Volume, Club Sports, and Sport Specialization With Sex and Lower Extremity Injury History in High School Athletes

2017 ◽  
Vol 9 (6) ◽  
pp. 518-523 ◽  
Author(s):  
Eric G. Post ◽  
David R. Bell ◽  
Stephanie M. Trigsted ◽  
Adam Y. Pfaller ◽  
Scott J. Hetzel ◽  
...  
Keyword(s):  
High School ◽  
Lower Extremity ◽  
Sport Participation ◽  
Lower Extremity Injury ◽  
Extremity Injury ◽  
High School Athletes ◽  
Level Of Evidence ◽  
Increased Risk ◽  
History Of ◽  
Club Sport

Background: High school athletes are increasingly encouraged to participate in 1 sport year-round to increase their sport skills. However, no study has examined the association of competition volume, club sport participation, and sport specialization with sex and lower extremity injury (LEI) in a large sample of high school athletes. Hypothesis: Increased competition volume, participating on a club team outside of school sports, and high levels of specialization will all be associated with a history of LEI. Girls will be more likely to engage in higher competition volume, participate on a club team, and be classified as highly specialized. Study Design: Cross-sectional study. Level of Evidence: Level 3. Methods: High school athletes completed a questionnaire prior to the start of their competitive season regarding their sport participation and previous injury history. Multivariable logistic regression analyses were used to investigate associations of competition volume, club sport participation, and sport specialization with history of LEI, adjusting for sex. Results: A cohort of 1544 high school athletes (780 girls; grades 9-12) from 29 high schools completed the questionnaire. Girls were more likely to participate at high competition volume (23.2% vs 11.0%, χ2 = 84.7, P < 0.001), participate on a club team (61.2% vs 37.2%, χ2 = 88.3, P < 0.001), and be highly specialized (16.4% vs 10.4%, χ2 = 19.7, P < 0.001). Athletes with high competition volume, who participated in a club sport, or who were highly specialized had greater odds of reporting a previous LEI than those with low competition volume (odds ratio [OR], 2.08; 95% CI, 1.55-2.80; P < 0.001), no club sport participation (OR, 1.50; 95% CI, 1.20-1.88; P < 0.001), or low specialization (OR, 2.58; 95% CI, 1.88-3.54; P < 0.001), even after adjusting for sex. Conclusion: Participating in high sport volume, on a club team, or being highly specialized was associated with history of LEI. Girls were more likely to participate at high volumes, be active on club teams, or be highly specialized, potentially placing them at increased risk of injury. Clinical Relevance: Youth athletes, parents, and clinicians should be aware of the potential risks of intense, year-round participation in organized sports.

scholarly journals EFFECTS OF NEUROMUSCULAR TRAINING ON BIOMECHANICAL EFFICIENCY IN HIGH SCHOOL ATHLETES

2020 ◽  
Vol 8 (4_suppl3) ◽  
pp. 2325967120S0014
Author(s):  
Joseph J. Janosky ◽  
Brandon Schneider ◽  
Daphne Ling ◽  
James Russomano ◽  
Naomi Roselaar ◽  
...  
Keyword(s):  
High School ◽  
Lower Extremity ◽  
Performance Feedback ◽  
Sports Medicine ◽  
Intervention Group ◽  
Control Group ◽  
High School Athletes ◽  
Warm Up ◽  
Left Lower Extremity ◽  
And Performance

Background: Anterior cruciate ligament (ACL) injuries are among the most common and devastating sports-related knee injuries. Neuromuscular training (NMT) has demonstrated efficacy as a preventive intervention for ACL injury and has been associated with improvements in measures of sports performance, but the specific physiologic mechanisms that serve as protective factors and contribute to improved performance haven not been well-defined. Hypothesis/Purpose: The purpose of this study is to investigate the association between NMT and biomechanical efficiency among high school athletes. We hypothesized that the performance of NMT is associated with improved biomechanical efficiency during the performance of fundamental movements and agility tests when compared to a group of untrained control subjects. Methods: Eight high school soccer and basketball teams (111 athletes, 53.1% male, mean age 15.6 years) were recruited and assigned to either an intervention or control group. The intervention group performed NMT as part of their warm-up prior to each practice and competition for 12 weeks. NMT was administered by experienced sports medicine clinicians who provided exercise instruction, technique cues, and performance feedback throughout each training session. The control group performed their customary warm-up under the direction of the team’s coaches. Biomechanical efficiency was assessed through performance of static and dynamic tests using an FDA-approved wireless sensor system. Agility was assessed using a timed three-cone agility test. All tests were administered immediately prior to and following each competitive sports season. Results: Matched pre-/post-season data was collected from 74 athletes (67%). Significant improvements [point estimate (95% CI) p-value] were observed in the intervention group for left lower extremity [0.25 (0.06,0.45) p = 0.01] and right lower extremity [0.21 (0.05,0.37) p = 0.01] loading/landing speed ratios during a single leg hop test, left lower extremity [-136.34 (-225.74,-46.95) p = 0.003] and right lower extremity [-110 (-211.36,-8.64) p = 0.03] ground reaction force, left lower extremity [-1.03, (-.189,-0.18) p = 0.02] and right lower extremity [-0.94 (-1.73,-0.14) p = 0.02] initial peak acceleration, and cadence [-12.12 (-21.60,-2.65) p = 0.01] during a straight-line running acceleration/deceleration test, and time [0.51 (0.24,0.78) p = 0.0003] during a three-cone agility test. Conclusion: Results demonstrate that season-long, sport-specific, age-appropriate NMT administered by sports medicine clinicians can significantly improve biomechanical efficiency during the performance of fundamental movements and agility tests by high school athletes. To achieve similar results, sports coaches should be trained to provide exercise instruction, technique cues, and performance feedback when administering NMT in real-world settings. [Table: see text][Table: see text]

scholarly journals THE LOWER EXTREMITY GRADING SYSTEM (LEGS) TO EVALUATE BASELINE LOWER EXTREMITY PERFORMANCE IN HIGH SCHOOL ATHLETES

2018 ◽  
Vol 13 (3) ◽  
pp. 401-409
Author(s):  
Joseph Smith ◽  
Nick DePhillipo ◽  
Shannon Azizi ◽  
Andrew McCabe ◽  
Courtney Beverine ◽  
...  
Keyword(s):  
High School ◽  
Lower Extremity ◽  
Grading System ◽  
High School Athletes ◽  
Lower Extremity Performance

scholarly journals October 2021 Critical Care Case of the Month: Unexpected Post-Operative Shock

2021 ◽  
Vol 23 (4) ◽  
pp. 93-97
Author(s):  
Sharanyah Srinivasan ◽  
◽  
Sooraj Kumar ◽  
Benjamin Jarrett ◽  
Janet Campion
Keyword(s):  
Lower Extremity ◽  
Pulseless Electrical Activity ◽  
Spontaneous Circulation ◽  
Intravenous Drug Use ◽  
Past Medical History ◽  
Incision And Drainage ◽  
Lower Extremity Wound ◽  
History Of ◽  
The Right ◽  
Operative Assessment

No abstract available. Article truncated after 150 words. History of Present Illness: A 55-year-old man with a past medical history significant for endocarditis secondary to intravenous drug use, osteomyelitis of the right lower extremity was admitted for ankle debridement. Pre-operative assessment revealed no acute illness complaints and no significant findings on physical examination except for the ongoing right lower extremity wound. He did well during the approximate one-hour “incision and drainage of the right lower extremity wound”, but became severely hypotensive just after the removal of the tourniquet placed on his right lower extremity. Soon thereafter he experienced pulseless electrical activity (PEA) cardiac arrest and was intubated with return of spontaneous circulation being achieved rapidly after the addition of vasopressors. He remained intubated and on pressors when transferred to the intensive care unit for further management. PMH, PSH, SH, and FH: • S/P Right lower extremity incision and drainage for suspected osteomyelitis as above • Distant history of endocarditis related …

The Natural History of Postconcussion Recovery Among High School Athletes

2019 ◽  
Vol 34 (5) ◽  
pp. E36-E44 ◽  
Author(s):  
Jeanne E. Dise-Lewis ◽  
Jeri E. Forster ◽  
Karen McAvoy ◽  
Kelly A. Stearns-Yoder ◽  
Nazanin H. Bahraini ◽  
...  
Keyword(s):  
High School ◽  
Natural History ◽  
High School Athletes ◽  
History Of

scholarly journals Use of Discretionary Protective Equipment and Rate of Lower Extremity Injury in High School Athletes

2005 ◽  
Vol 161 (6) ◽  
pp. 511-519 ◽  
Author(s):  
J. Yang ◽  
S. W. Marshall ◽  
J. M. Bowling ◽  
C. W. Runyan ◽  
F. O. Mueller ◽  
...  
Keyword(s):  
High School ◽  
Lower Extremity ◽  
Lower Extremity Injury ◽  
Protective Equipment ◽  
Extremity Injury ◽  
High School Athletes

scholarly journals Timing of Lower Extremity Injuries in Competition and Practice in High School Sports

2017 ◽  
Vol 9 (3) ◽  
pp. 238-246 ◽  
Author(s):  
Kyle Nagle ◽  
Bernadette Johnson ◽  
Lina Brou ◽  
Tyler Landman ◽  
Ada Sochanska ◽  
...  
Keyword(s):  
High School ◽  
Lower Extremity ◽  
Epidemiologic Study ◽  
Lower Extremity Injury ◽  
High School Athletes ◽  
Level Of Evidence ◽  
Severe Injuries ◽  
Injury Surveillance System ◽  
High School Sports ◽  
School Sports

Background: Laboratory-based experiments demonstrate that fatigue may contribute to lower extremity injury (LEI). Few studies have examined the timing of LEIs during competition and practice, specifically in high school athletes across multiple sports, to consider the possible relationship between fatigue and LEIs during sport events. Hypothesis: The purpose of this study was to describe the timing of LEIs in high school athletes within games and practices across multiple sports, with a hypothesis that more and severe injuries occur later in games and practices. Study Design: Descriptive epidemiologic study. Level of Evidence: Level 4. Methods: Using the National High School RIO (Reporting Information Online) sport injury surveillance system, LEI severity and time of occurrence data during practice and competition were extracted for 9 high school sports. Results: During the school years 2005-2006 through 2013-2014, 16,967,702 athlete exposures and 19,676 total LEIs were examined. In all sports surveyed, there was a higher LEI rate, relative risk for LEI, and LEI requiring surgery during competition than practice. During practice, the majority of LEIs occurred over an hour into practice in all sports. In quarter-based competition, more LEIs occurred in the second (31% to 32%) and third quarters (30% to 35%) than in the first (11% to 15%) and fourth quarters (22% to 26%). In games with halves, the majority (53% to 66%) of LEIs occurred in the second half. The greater severity LEIs tended to occur earlier in games. Conclusion: Fatigue may play a role in the predominance of injuries in the second half of games, though various factors may be involved. Greater severity of injuries earlier in games may be because of higher energy injuries when athletes are not fatigued. Clinical Relevance: These findings can help prepare sports medicine personnel and guide further related research to prevent LEIs.

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