Although the relationship between hip strength and dynamic lower extremity valgus is conflicting, meta-analysis revealed lower extremity dynamic valgus was consistently associated with hip strength in single leg ballistic tasks, but not double leg ballistic or single leg squat tasks. The relationship between hip strength and dynamic lower extremity valgus may be conditional to task demand.

Background:Concussions represent 8.9% to 13.2% of all high school athletic injuries. How these injuries are managed is currently unknown.Hypothesis:There are differences in concussion management and awareness among boys football, boys ice hockey, and boys and girls soccer.Study Design:Descriptive epidemiologic study.Methods:High school athletic directors were contacted via e-mail and asked to complete, and request that their staff complete, an online survey with 4 sections aimed at athletic directors, head coaches, team physicians, and certified athletic trainers.Results:According to coaches, concussion awareness education was provided for football (97%), hockey (65%), and boys and girls soccer (57% and 47%, respectively) (P < 0.01). Use of sideline screening tools was significantly greater for football (P = 0.03). All participants agreed that a player who has suffered a concussion cannot return to play the same day.Conclusion:There is a difference in concussion management and awareness among the 4 sports. Concussion education is well promoted in football but should be expanded in soccer and hockey. Players are not allowed to return to play the same day, and the majority are referred to a physician.Clinical Relevance:Study results highlight the differences in concussion education among sports. Health care providers should address these gaps.

The distance between the PIN and cortical button can be significantly increased by aiming the guide pin between 0° and 20° proximal toward the RCJ and placing the device in line with the radial shaft.

Background:Rotator cuff tendinopathy is a frequent cause of shoulder pain that can lead to decreased strength and range of motion. Failures after using the single-row technique of rotator cuff repair have led to the development of the double-row technique, which is said to allow for more anatomical restoration of the footprint.Purpose:To compare 5 different types of suture patterns while maintaining equality in number of anchors. The hypothesis was that the Mason-Allen–crossed cruciform transosseous-equivalent technique is superior to other suture configurations while maintaining equality in suture limbs and anchors.Study Design:Controlled laboratory study.Methods:A total of 25 fresh-frozen cadaveric shoulders were randomized into 5 suture configuration groups: single-row repair with simple stitch technique; single-row repair with modified Mason-Allen technique; double-row Mason-Allen technique; double-row cross-bridge technique; and double-row suture bridge technique. Load and displacement were recorded at 100 Hz until failure. Stiffness and bone mineral density were also measured.Results:There was no significant difference in peak load at failure, stiffness, maximum displacement at failure, or mean bone mineral density among the 5 suture configuration groups (P < .05).Conclusion:According to study results, when choosing a repair technique, other factors such as number of sutures in the repair should be considered to judge the strength of the repair.Clinical Relevance:Previous in vitro studies have shown the double-row rotator cuff repair to be superior to the single-row repair; however, clinical research does not necessarily support this. This study found no difference when comparing 5 different repair methods, supporting research that suggests the number of sutures and not the pattern can affect biomechanical properties.

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