Retrospective evaluation of canine and feline maxillomandibular trauma cases

Summary

Objectives: To determine relationships between seasonality and lunar cycle and the frequency of maxillomandibular (MM) and non-maxillomandibular (non-MM) injury in canine and feline trauma patients.

Methods: A medical records database was searched to identify all MM trauma patients (n = 67) and a random sample of non-MM trauma patients (n = 129) according to search criteria. Season of injury, moon phase, and moon luminosity were calculated for the date of injury.

Results: Maxillomandibular injury occurred predominately in the spring and decreased through winter while non-MM injury occurred more frequently in the summer and fall. The difference in the frequency of MM and non-MM injuries during different seasons was not significant (p = 0.071). When comparing the amount of moon illuminated when injuries occurred during the quarters before or after the full moon, a difference (p = 0.007) was noted with a greater number of injuries occurring immediately following the full moon.

Clinical significance: These results may guide clinicians to closely evaluate trauma patients that are presented on emergency during a particular season or lunar phase. Based on the season at the time of injury, close evaluation for MM versus non-MM trauma may be appropriate.

Keywords

Maxillomandibular - trauma - fracture - lunar cycle - seasonality - injury

• References

• 1 Kitshoff AM, de Rooster H. et al. A retrospective study of 109 dogs with mandibular fractures. Vet Comp Orthop Traumatol 2013; 26: 1-5.
• 2 Mulherin BL. et al. Retrospective evaluation of canine and feline maxillomandibular trauma cases. A comparison of signalment with non-maxillomandibular traumatic injuries (2003-2012). Vet Comp Orthop Traumatol 2014; 27: 192-197.
• 3 Umphlet RC, Johnson AL. Mandibular fractures in the dog. A retrospective study of 157 cases. Vet Surg 1990; 19: 272-275.
• 4 Lopes FM. et al. Oral fractures in dogs of Brazil - a retrospective study. J Vet Dent 2005; 22: 86-90.
• 5 Packer C, Swanson A, Ikanda D. et al. Fear of darkness, the full moon and the nocturnal ecology of African lions. PLos ONE. 2011 6. e22285.
• 6 Butler S, Songra A, Hardee P. et al. The moon and its relationship to oral and maxillofacial emergencies. Br J Oral Maxillofac Surg 2003; 4: 170-172.
• 7 Belleville G. et al. Impact of seasonal and lunar cycles on psychological symptoms in the ED: an empirical investigation of widely spread beliefs. Gen Hosp Psychiatry 2013; 35: 192-194.
• 8 Bhattacharjee C, Bradley P, Smith M. et al. Do animals bite more during a full moon? Retrospective observational analysis. BMJ 2000; 321: 1559-1561.
• 9 Alonso Y. Geophysical variables and behavior: LXXII. Barometric pressure, lunar cycle, and traffic accidents. Percept Mot Skills 1993; 77: 371-376.
• 10 Zimecki M. The lunar cycle: effects on human and animal behavior and physiology. Postepy Hig Med Dosw 2006; 60: 1-7.
• 11 Chapman S, Morrell S. Barking Mad? another lunatic hypothesis bites the dust. BMJ 2000; 321: 1561-1563.
• 12 Wells RJ, Gionfriddo JR, Hackett TB. et al. Canine and feline emergency room visits and the lunar cycle: 11,940 cases (1992-2002). J Am Vet Med Assoc 2007; 231: 251-253.
• 13 Goddard Space Flight Center. NASA Seasons of the Year [homepage on internet]. 2013 [cited on 2013 January 15]. Available from: http://www-istp.gsfc.nasa.gov/stargaze/Sseason.htm
• 14 Warham K, Johansen A. et al. Seasonal variation in the incidence of wrist and forearm fractures, and its consequences. Injury 2003; 34: 219-222.
• 15 Phillips IR. A survey of bone fractures in the dog and cat. J Small Anim Pract 1979; 20: 661-674.
• 16 Soukup JW. et al. Prevalence and nature of dentoalveolar injuries amoung patients with maxillofacial fractures. J Small Anim Pract 2013; 54: 9-14.
• 17 Bonner SE, Reiter AM. et al. Orofacial manifestations of high-rise syndrome in cats: a retrospective study of 84 cases. J Vet Dent 2012; 29: 10-18.
• 18 The Old Farmer’s Almanac. Moon Phase Calendar for Madison, Wisconsin [homepage on internet]. 2013 [cited on 2013 January 15]. Available from: http://www.almanac.com/moon/calendar/WI/Madison/2005-01
• 19 NOAA Tides & Currents. Astronomical data [homepage on internet]. 2013 [cited on 2013 January 1]. Available from: http://tidesandcurrents.noaa.gov/astronomical.html
• 20 Danzl DF. Lunacy. J Emerg Med 1987; 5: 91-95.
• 21 Roosli M, Juni P. et al. Sleepless night, the moon is bright: longitudinal study of lunar phase and sleep. J Sleep Res 2006; 15: 149-153.
• 22 Li Y, Jin H, Owens JA. et al. The association between sleep and injury among school-aged children in rural China: A case-control study. Sleep Med 2008; 9: 142-148.
• 23 Koulouglioti C, Cole R, Kitzman H. Inadequate sleep and unintentional injuries in young children. Public Health Nurs 2008; 28: 106-114.
• 24 Hart BL. et al. Behavioral modification through hormonal manipulation. In: Hart BL, Hart LA. editors. Canine and Feline Behavioral Therapy. Philadelphia: Lea & Febiger; 1985. pg. 1985-231.
• 25 Marr JS, Beck AM, Lugo JM. An epidemiologic study of the human bite. Public Health Reports 1979; 94: 514-521.
• 26 Palacio J, Leon-Artozqui M, Pastor-Villalba E. et al. Incidence of and risk factors for cat bites: a first step in prevention and treatment of feline aggression. J Feline Med Surg 2007; 9: 188-195.
• 27 Sokolowski JH. et al. Seasonal incidence of estrus and interestrous interval for bitches of seven breeds. J Am Vet Med Assoc 1977; 171: 271-273.
• 28 Christie DW, Bell ET. Some observations on the seasonal incidence and frequency of oestrus in breeding bitches in Britain. J Small Anim Pract 1971; 12: 159-167.
• 29 Verhage HG, Beamer NB, Brenner RM. Plasma levels of estradiol and progesterone in the cat during polyestrus, pregnancy and psuedopregnancy. Biol Reprod 1976; 14: 579-585.