Chapter 7: Protective Gear and Sports Equipment © 2011 McGraw-Hill Higher Education. All rights reserved. • Selection, fitting and maintenance of protective equipment are critical in injury prevention • Athletic trainers must have knowledge of protective equipment available for different sports and proper fitting procedures • Protection is critical in contact and collision sports • Athletic trainers must also have knowledge of how and when protective equipment should be used to facilitate rehabilitation © 2011 McGraw-Hill Higher Education. All rights reserved. Safety Standards for Equipment and Facilities • Concerns relative to materials, durability, establishment of standards, manufacturing, testing methods, and requirements for use • Must be in place relative to maintenance • Concern should be protective ability not appearance of equipment • A number of groups and agencies are involved in standardizing sports equipment and facilities © 2011 McGraw-Hill Higher Education. All rights reserved. Legal Concerns • Increasing amount of litigation regarding equipment – Must foresee all uses and misuses and warn user against potential risks inherent in equipment misuse • If equipment results in injury due to defect or inadequacy for intended use manufacturer is liable • If equipment is modified --modifier becomes liable © 2011 McGraw-Hill Higher Education. All rights reserved. • To avoid litigation, individuals should follow specific use instructions of equipment exactly – If the athletic trainer’s modification results in injury the AT and the institution are subject to a suit (tort) © 2011 McGraw-Hill Higher Education. All rights reserved. Equipment Reconditioning and Recertification • National Operating Committee on Standards for Athletic Equipment established voluntary testing standards in an effort to reduce head injuries • Established for football helmets, baseball/softball helmets, lacrosse helmets/facemasks • Takes into consideration type of helmet and amount of and intensity of usage © 2011 McGraw-Hill Higher Education. All rights reserved. • NOCSAE helmet standard – Not a warranty – Indicates that helmet met requirements of performance tests when manufactured/reconditioned • Helmets should undergo regular recertification and reconditioning – Will allow equipment to meet necessary standards for multiple seasons © 2011 McGraw-Hill Higher Education. All rights reserved. Off the Shelf vs. Custom Protective Equipment • Off the shelf equipment – Pre-made and packaged – Can be used immediately • Neoprene sleeves, inserts, ankle braces – May pose problem relative to sizing • Customized equipment – Constructed according to the individual – Specifically sized and designed for protective and supportive needs © 2011 McGraw-Hill Higher Education. All rights reserved. Head Protection • Direct collision sports require head protection due to impacts, forces, velocities and implements • Football Helmets – NOCSAE develop standards for football helmet certification – Must be protective against concussive force – While helmets must be certified, they may not always be fail-safe – Athletes and parents must be aware of inherent risks © 2011 McGraw-Hill Higher Education. All rights reserved. – Each helmet must have visible exterior warning label • Label indicates that helmet should not be used to strike an opponent due to risk of injury • Also indicates risk of injury accidentally and that athlete plays at own risk while using helmet – Athlete must be aware of risks and what label indicates • Athlete reads and signs statement regarding warning label – There are a number of helmet manufacturers, and even more have closed due to lawsuits and liability cases © 2011 McGraw-Hill Higher Education. All rights reserved. © 2011 McGraw-Hill Higher Education. All rights reserved. © 2011 McGraw-Hill Higher Education. All rights reserved. © 2011 McGraw-Hill Higher Education. All rights reserved. Figure 7-1 © 2011 McGraw-Hill Higher Education. All rights reserved. – Football helmets generally have air or fluid-filled pockets to absorb force • Riddell Revolution has made revolutionary changes – Computer designed helmet that extends further past the jaw for additional protection and stability – The distance between the helmet and head has been increased – Padding inflates to fit the player’s head shape – The face guard system has isolated attachment points from the shell, reducing jarring from low-level impacts to the face guard • Xenith helmet has thermoplastic airflow shock absorbers in a flexible cap – Said to adapt to force of impact and dissipate energy – Decreases acceleration of head and reduces jarring associated with concussions © 2010 McGraw-Hill Higher Education. All rights reserved. Figure 7-2 © 2011 McGraw-Hill Higher Education. All rights reserved. Helmet Fitting • When fitting head/hair should be wet to simulate sweat • Follow manufacturer’s directions • Must routinely check fit – Snug fit (credit card test) – With change in altitude bladder helmets must be rechecked – Chin straps (2, 4, or 6 strap systems) – Jaw pads are essential (prevent lateral rocking) • Certification is of no avail if helmet is not fit and maintained © 2011 McGraw-Hill Higher Education. All rights reserved. Figure 7-3 © 2011 McGraw-Hill Higher Education. All rights reserved. Ice Hockey Helmets • Undergone extensive testing in an effort to upgrade and standardize • Must withstand high velocity impacts (stick or puck) and high mass low velocity impacts • Helmet will disperse force over large area and decelerate forces that would act on head (energy absorption liner) • Helmets must be approved by Canadian Standards Association or the Hockey Equipment Certification Council © 2011 McGraw-Hill Higher Education. All rights reserved. Figure 7-4 © 2011 McGraw-Hill Higher Education. All rights reserved. Baseball Batting Helmets • Must withstand high velocity impacts • Research has indicated that helmet does little to dissipate energy of ball • Possible solution would be to add additional external padding • Helmet must still carry NOCSAE stamp (similar to football label) © 2011 McGraw-Hill Higher Education. All rights reserved. Figure 7-5 © 2011 McGraw-Hill Higher Education. All rights reserved. Cycling Helmets • Designed to protect head during one single impact • Many states require the use of cycling helmets – Especially in adolescents © 2011 McGraw-Hill Higher Education. All rights reserved. Lacrosse Helmets • Required for all male lacrosse players • Women’s lacrosse only requires protective eye guard • Made of hard plastic with wire mesh face guard • Designed to absorb repeated impact from hard, high velocity projectiles • Goalie helmet add throat protector Figure 7-7 © 2011 McGraw-Hill Higher Education. All rights reserved. Soccer Headgear • Designed to reduce incidence of concussions due to heading ball • Consists of headband with foam padding • No research to support effectiveness in reducing incidence of concussions © 2011 McGraw-Hill Higher Education. All rights reserved. Other Helmets © 2011 McGraw-Hill Higher Education. All rights reserved. Face Protection – Face Guard • Has reduced the number of facial injuries • Number of concussions has increased because head is most often used in initial contact • There are a variety of protective options depending on sport and position • Proper mounting of the mask must occur with no additional attachments that would invalidate the manufacturer’s warranty • All mountings must be flush to the helmet © 2011 McGraw-Hill Higher Education. All rights reserved. • In high school hockey, face masks are required (with white plastic coating) that meet Hockey Equipment Certifications Council and American Society for Testing Materials • Opening can not allow passage of sticks or pucks • Additional polycarbonate face shields are also available • The use of throat protectors is also mandated at some levels – Throat Protection • Laryngotracheal injuries, while uncommon can be fatal • Baseball catchers, lacrosse goalies and ice hockey goalies are most at risk – Should be mandatory in these sports © 2011 McGraw-Hill Higher Education. All rights reserved. Figure 7-8, 7-9, 7-10 © 2011 McGraw-Hill Higher Education. All rights reserved. – Mouth Guards • Most dental injuries can be prevented with appropriate customized intraoral mouth guards • Protect teeth, minimize lip lacerations, absorb shock of chin blows, and prevent concussions • Should fit comfortably, not impede speech or breathing • Should extend back as far as last molar • Constructed of flexible resilient material formed to fit teeth and upper jaw • Do not cut down mouth guard as it voids warranty for dental protection and could become dislodged and disrupt breathing • Three types – Stock – Commercial (formed following submersion in water) – Custom (fabricated from dental mold) • Mandated use in high school and collegiate levels © 2011 McGraw-Hill Higher Education. All rights reserved. © 2011 McGraw-Hill Higher Education. All rights reserved. – Ear Guards • Most sports do not use • Wrestling, water polo and boxing utilize to prevent ear irritation and ultimately deformity of ears – Eye Protection • Highest percentage of eye injuries are sports related • Generally blunt trauma • Glasses – May slip on sweat, become bent, fog, detract from peripheral vision or be difficult to wear with headgear – Properly fitting glasses can provide adequate protection – Lens should be case hardened to cause crumbling and not splintering on contact (disadvantage = increased weight) – May have polarizing/tinting ability – Plastic lenses while lightweight are easy to scratch © 2011 McGraw-Hill Higher Education. All rights reserved. – Contact Lenses • Become part of the eye and move with it • Corneal and sclera lenses • Peripheral vision, astigmatisms and corneal waviness is limited • Will not fog and can be tinted • Disadvantages include cost, corneal irritation, possibility of coming dislodged • Soft hydrophilic lenses and disposable lenses are very popular • Introduction of surgical techniques – Radial keratectomy – Laser in-situ keratomileusis (LASIK) – Safe and effective in improving faulty vision © 2011 McGraw-Hill Higher Education. All rights reserved. – Eye and Glasses Guards • Necessary in sports with fast moving projectiles • Athletes not wearing glasses should wear closed eye guards to protect orbital cavity • While eye guards afford great protection, they can limit vision • Polycarbonate eye shield have been developed for numerous pieces of head gear – Neck Protection • Serve primarily as a reminder to athlete to be cautious rather than providing definitive restrictions © 2011 McGraw-Hill Higher Education. All rights reserved. Figure 7-13 © 2011 McGraw-Hill Higher Education. All rights reserved. Trunk and Thorax Protection • Essential in many sports • Must protect regions that are exposed to the impact of forces – External genitalia, bony protuberances, shoulders, ribs, and spine • While equipment may provide armor, it may also be used as an implement • Question must be asked concerning necessity of equipment and its role in producing trauma © 2011 McGraw-Hill Higher Education. All rights reserved. Figure 7-14 © 2011 McGraw-Hill Higher Education. All rights reserved. • Football Shoulder Pads – Two types • Cantilevered - bulkier and used by those engaged in blocking and tackling • Non-cantilevered - do not restrict motion (quarterback and receivers) – Rules of fitting • Width of shoulders must be measured • Inside of pad should cover tip of shoulder in line with lateral aspect of shoulder • Epaulets and cups must cover deltoid and allow motion • Neck opening must allow athlete to raise arms over head w/out pads sliding forward and back • With split clavicle pads, channel for top of shoulder must be in proper position © 2011 McGraw-Hill Higher Education. All rights reserved. Non-cantilevered Cantilevered Figure 7-15 © 2011 McGraw-Hill Higher Education. All rights reserved. Figure 7-16 © 2011 McGraw-Hill Higher Education. All rights reserved. • Straps underneath arms should hold pads firmly in-place, w/out soft tissue restriction – Combinations of padding (football and hockey) may be used to supplement padding and protection Figure 7-17 © 2011 McGraw-Hill Higher Education. All rights reserved. • Sports Bras – Significant effort has been made to develop athletic support for women – Most designed to minimize excessive vertical and horizontal movements that occur with running and jumping – To be effective, should hold breasts to chest, preventing stretching of Cooper’s ligament Figure 7-19 © 2011 McGraw-Hill Higher Education. All rights reserved. – Non-supportive bras, can cause rubbing and abrading of skin and nipples due to construction – Types available • Compressive (bind breasts to chest wall - recommended for medium size breast) • Support (heavy duty with additional upward support for larger breasts) • Lightweight elastic (compression and support not as critical for smaller breasts) Figure 7-19 • Thorax and Rib Protection – Thorax protectors and rib belts – Protect against external forces – Air-inflated interconnected cylinders (jacket design) Hips and Buttocks • Required in collision and high-velocity sports • Boxing, snow skiers, equestrians, jockeys and water skiers • Girdle and belt types Figure 7-21 © 2011 McGraw-Hill Higher Education. All rights reserved. Groin and Genitalia • Sports involving high velocity projectiles • Require cup protection for male participants • Stock item that fits into jockstrap or athletic supporter © 2011 McGraw-Hill Higher Education. All rights reserved. Lower Extremity Protective Equipment • Socks – Poorly fit socks can cause abnormal stress on the foot – Should be clean, dry and w/out holes – Different types for different activities – Composition • Cotton can be bulky • Cotton/poly blend are lighter and dry faster © 2011 McGraw-Hill Higher Education. All rights reserved. • Shoe selection – Number of options for multiple activities – Shoe will breakdown and degrade over time • Running shoes for example will last between 350550 miles • Shoes may need to be constantly replaced if very active – Guidelines for selection • Toe Box - space for toes (1/2 to 3/4 inch of space from toes to front of shoe) • Sole - provide shock absorption and durable – Spongy layer to absorb force – Midsole that cushions midfoot and toes – Hard rubber which contacts the ground • Heel Counter - prevents medial and lateral roll of foot © 2011 McGraw-Hill Higher Education. All rights reserved. • Shoe Uppers - top of shoe made with combination of materials, designed for appropriate ventilation, drying and support • Shank – Part of sole between heel and metatarsal heads • Last – Form on which shoe is built; may be straight (good for pronators), semi-curved or curved (good for supinators) • Arch Support - durable but soft and supportive to foot • Price- due to impact on performance and injury prevention, may be worth the extra investment Figure 7-23 © 2011 McGraw-Hill Higher Education. All rights reserved. • Shoe fitting – Measure both feet, as there will be slight differences – Approximate conditions of use – Fit at the end of day due to gradual increase in volume due to weight bearing – Should be snug but allow ample movement of foot and toes – Should break at widest part, coinciding with ball of foot – Must also consider width of shank, nonyielding nature of sole and function of arch support © 2011 McGraw-Hill Higher Education. All rights reserved. – Cleated and specialty shoes may present problems with fitting – Playing surfaces and activities must be considered Figure 7-24 © 2011 McGraw-Hill Higher Education. All rights reserved. • Foot Orthotics – Device for correcting biomechanical problems that exist in foot that can cause injury – Plastic, thermoplastic, rubber, Sorbothane, leather support or readymade products – Can also be customized by physician, podiatrist, athletic trainer or physical therapist Figure 7-25 • More expensive © 2010 McGraw-Hill Higher Education. All rights reserved. • Heel Cups – Used for a variety of conditions including plantar fasciitis, heel spurs, Achilles tendonitis and heel bursitis – Hard plastic or spongy rubber used to help compress fat pad, providing more cushion during weight bearing • Off-the-shelf Foot Pads – General public use, not designed for athletic use – With adequate funding, provides advantage of saving time – Manufactured for numerous structural conditions – Commonly used before customized devices are made © 2011 McGraw-Hill Higher Education. All rights reserved. • Ankle Braces – Alone or with tape -- they are increasingly popular – Significant debate over efficacy – Little or no impact on performance – Compared to tape, the device will not loosen significantly with use – Research also looking at impact on proprioceptive effects – Evidence to support use for prevention © 2011 McGraw-Hill Higher Education. All rights reserved. Ankle Braces Figure 7-27 © 2011 McGraw-Hill Higher Education. All rights reserved. • Shin and Lower Leg – Anterior aspect of leg is exposed to direct blows – Commercially marketed, hard molded shin guards are used in field hockey and soccer © 2010 McGraw-Hill Higher Education. All rights reserved. • Thigh and Upper Leg – Necessary in collision sports – Pads slip into ready made uniform pockets – Customized pads may need to be held in place with tape and/or wraps – Neoprene sleeves can also be used for support of injuries Figure 7-29 © 2011 McGraw-Hill Higher Education. All rights reserved. • Knee Braces – Used prophylactically to prevent injuries to MCL – AOSSM has expressed concerns to efficacy in doing so – May positively influence joint position sense Figure 7-30 © 2011 McGraw-Hill Higher Education. All rights reserved. • Types of Braces – Rehabilitative: • Widely used following surgery • Allows controlled progressive immobilization • Adjustable – Functional: • Used during and following rehab to provide functional support • Ready-made and customized – Neoprene (w/ medial and lateral support) • Used by those that have sustained collateral ligament injuries • Some are also used to provide support in those that have patellofemoral conditions © 2011 McGraw-Hill Higher Education. All rights reserved. Elbow, Wrist and Hand Protection • While the elbow is less commonly injured it is susceptible to instability, contusions, and muscle strain • A variety of products are available to protect the elbow Figure 7-31 © 2011 McGraw-Hill Higher Education. All rights reserved. • Wrist, hand and finger injuries are often trivialized but can be functionally disabling • Susceptible to fracture, dislocation, ligament sprains and muscle strains • Gloves and splints are available for protection and immobilization Figure 7-32 © 2011 McGraw-Hill Higher Education. All rights reserved. Construction of Protective and Supportive Devices • An athletic trainer should be able to design and construct protective devices • Must have knowledge of theoretical basis of padding construction • Art form based on science • A variety of materials are available – Hard and soft materials © 2011 McGraw-Hill Higher Education. All rights reserved. • Soft materials – Gauze: versatile, can be used for protection or absorption – Cotton: cheapest and more widely used (absorbent, holds emollients and offers mild padding – Adhesive felt (moleskin, spongy rubber): – Felt: matted wool fibers, pressed in a variety of thicknesses • Semi-resilient, providing firm pressure • Absorbent and clings to skin (less tendency to move) • Must be replaced daily due to absorbent qualities © 2011 McGraw-Hill Higher Education. All rights reserved. – Foam: many uses with many densities • Resilient, non-absorbent material that protects against compressive force • Open vs. closed cells (return to shape) • Thermomoldable • Some have viscoelastic polymers and are energy absorbent • Non-yielding Materials – Thermomoldable plastics • Used in orthotics, braces, splints and for shielding body parts • Casting, support for foot, protect contusions © 2011 McGraw-Hill Higher Education. All rights reserved. Figure 7-33 & 7-34 © 2011 McGraw-Hill Higher Education. All rights reserved. • Types – Heat forming - heat and can be molded (Orthoplast) – Heat plastic foams- different densities due to the addition of liquids, gas, or crystals » Commonly used in shoe inserts – Casting Materials • Casting has long been a practice in sports medicine • Fiberglass is the material of choice, which uses resin and catalytic converter, plus water to produce hardening • Effective shell for splinting and padding © 2011 McGraw-Hill Higher Education. All rights reserved. Figure 7-36 © 2011 McGraw-Hill Higher Education. All rights reserved. Tools for Customizing • Adhesives (glues and cements) • Adhesive tapes • Heat Source (used to form thermomoldable plastics/foams) • Shaping Tools (scissors, blades, knives) • Fastening material (variety of devices including snaps, Velcro, rivets, laces © 2011 McGraw-Hill Higher Education. All rights reserved. Dynamic Splints • Used for injuries to the hands and fingers • Provides long duration tension on healing structures • Combination of thermomoldable plastic, elastic and Velcro Figure 7-38 © 2011 McGraw-Hill Higher Education. All rights reserved.