The objective of this study was to compare the capacity of vinyl nitrile and expanded polypropylene, two materials commonly used in ice hockey helmets, to reduce the peak linear acceleration, peak angular acceleration, and head injury criterion values during a direct impact to a hybrid III headform. Six different ice hockey helmets were tested using a pneumatic linear impactor at velocities similar to those in hockey. The results showed that helmets using expanded polypropylene foam liners are significantly better at reducing linear acceleration; however, helmets using vinyl nitrile foam liners are significantly better at reducing angular acceleration. Furthermore, the impact location influenced the performance of the liner.
BiascaN.WirthSTegnerY‘The avoidability of head and neck injuries in ice hockey: a historical review’Br. J. Sports Med.36 (2002): 410–427
2.
FlikK.LymanSMarxR. G‘American collegiate men's ice hockey: an analysis of injuries’Am. J. Sports Med.33 (2) (2005): 183–187
3.
GerberichS. GFinkeRMaddenMPriestJ. DAamothGMurrayK‘An epidemiological study of high school ice hockey injuries’Child's Nervous System3 (1) (1987): 59–64
4.
GoodmanD.GaetzMMeichenbaumD‘Concussions in hockey: there is cause for concern’Med. Sci. Sports Exercise33 (12) (2001): 2004–2009
5.
EmeryC. AMeeuwisseW. H‘Injury rates, risk factors, and mechanism of injury in minor hockey’Am. J. Sports Med.34 (12) (2006): 1960–1969
6.
LevyM. LOzgurB. MBerryCAryanH. EApuzzoM. L‘Analysis and evolution of head injury in football’Neurosurgery55 (3) (2004): 649–655
7.
BailesJ. ECantuR. C‘Head injury in athletes’Neurosurgery48 (1) (2001): 26–45
8.
Centers for Disease Control and Prevention, ‘Sports-related recurrent brain injuries – United States’MMWR, Morbidity Mortality Weekly Rep.46 (10) (1997): 224–227
9.
OmmayaA. KGoldsmithWThibaultL‘Biomechanics and neuropathology of adult and paediatric head injury’Br. J. Neurosurg.16 (3) (2002): 220–242
10.
PrangeM. TMarguliesS. S‘Regional, directional, and age-dependent properties of the brain undergoing large deformation’J. Biomech. Engng124 (2) (2002): 244–252
11.
BaylyP. VCohenT. SLeisterE. PAjoDLeuthardtE. CGeninG. M‘Deformation of the human brain induced by mild acceleration’J. Neurotrauma22 (8) (2005): 845–856
12.
KleivenS.‘Influence of impact direction on the human head in prediction of subdural hematoma’J. Neurotrauma20 (4) (2003): 365–379
13.
ZhangL.YangK. HKingA. I‘Comparison of brain responses between frontal and lateral impacts by finite element modeling’J. Neurotrauma18 (1) (2001): 21–30
14.
GurdjianE. SWebsterJ. E‘Experimental head injury with special reference to the mechanical factors in acute trauma’Surg., Gynecol. Obstet.76 (1943): 623–634
15.
GurdjianE. SWebsterJ. ELissnerH. R‘Observations on the mechanism of brain concussion, contusion, and laceration’Surg., Gynecol. Obstet.101 (6) (1955): 680–690
16.
OmmayaA. KHirschA. E‘Tolerances for cerebral concussion from head impact and whiplash in primates’J. Biomech.4 (1) (1971): 13–21
17.
OnoK.KikuchiANakamuraMKobayashiHNakamuraN‘Human head tolerance to sagittal impact reliable estimation deduced from experimental head injury using subhuman primates and human cadaver skulls’. In Proceedings of the 24th Stapp Car Crash Conference, Troy, Michigan, USA, 1980, pp. 103–160, SAE paper 801303 (SAE International, Warrendale, Pennsylvania).
HolbournA. H. S.‘Mechanics of head injury’Lancet242 (6267) (1943): 438–441
20.
LowenheilmP.‘Mathematical simulation of gliding contusions’J. Biomech.8 (6) (1975): 351–356
21.
GennarelliT. AThibaultL. EOmmayaA. K‘Pathophysiologic responses to rotational and translational accelerations of the head’. In Proceedings of the 15th Stapp Car Crash Conference, Coronado, California, USA, 17–19 November 1971, 1972, SAE Paper 720970, pp. 296–308 (SAE International, Warrendale, Pennsylvania).
22.
GennarelliT. AThibaultL. EAdamsJ. HGrahamD. IThompsonC. JMarcincinR. P‘Diffuse axonal injury and traumatic coma in the primate’Ann. Neurol.12 (6) (1982): 564–574
23.
LissnerH. RLebowMEvansF. G‘Experimental studies on the relation between acceleration and intracranial changes in man’Surg., Gynecol. Obstet.111 (1960): 329–338
24.
PatrickL. MLissnerH. RGurdjianE. S‘Survival by design – head protection’. In Proceedings of the seventh Stapp Car Crash Conference, Los Angeles, California, USA, 11–13 November 1963, 1965, pp. 483–499 (Charles C. Thomas, Springfield, Illinois).
25.
EppingerRSunEBandakFHaffnerMKhaewpongNMalteseMKuppaSNguyenTTakhountsETannousRZhangASaulR, Development of improved injury criteria for the assessment of advanced automotive, restraint systems – II. Supplement to NHTSA Docket, 1998–4405-9, National Highway Traffic Safety Administration, US Department of Transportation, Washington, DC, USA, 1999.
26.
HoshizakiT. BBrienS. E‘The science and design of head protection in sport’Neurosurgery55 (4) (2004): 956–967
27.
PadgaonkarA. JKreigerK. WKingA. I‘Measurement of angular accelerations of a rigid body using linear accelerometers’J. Appl. Mech.42 (1975): 552–556
28.
ASTM F1045–07. Standard performance specification for ice hockey helmets, 2007, 10 pp. (ASTM International, West Conshohocken, Pennsylvania)
29.
CAN/CSA Z262.1-M90 (R1997). Ice hockey helmets, 1997, 38 pp. (Canadian Standard Association, Mississauga, Ontario)
30.
ISO TC 83/SC 5N. Working draft ISO/EN 10256, Head and face protection for use in ice hockey, 2006, 65 pp. (International Organization for Standardization, Ottawa, Ontario)
31.
PellmanE. JVianoD. CTuckerA. MCassonI. RWaeckerleJ. F‘Concussion in professional football: reconstruction of game impacts and injuries’Neurosurgery53 (4) (2003): 799–812
