To the Editor: Snowboarding is increasing in popularity, but Australian snowboarders have been shown to have 2.4 times as many fractures as skiers, with 35% of upper limb injuries being fractures.1 The most common site of injury is the wrist, accounting for 21.6% of all snowboarding injuries.2 It has been suggested that the use of wrist guards could reduce the risk of injury, particularly as snowboarding injuries tend to be impactive rather than torsional.3,4 However, concern has been raised that use of wrist guards will redistribute the impact of the force to more proximal areas of the arm, causing elbow injuries.5

We conducted a case–control study at the Mount Buller Medical Centre, Victoria, during the 2004 and 2005 ski seasons to assess:

• the association between wrist guard use and wrist fracture in snowboarders in Australia; and

• the association between wrist guard use and the severity of wrist and elbow injury.

Cases were defined as any snowboarder seen at the clinic with a fractured wrist (n = 119). Controls (n = 375) were snowboarders — identified by their boots — who attended the clinic, either as companions to case participants or other patients, or as patients presenting for a reason other than wrist fracture.

Study participants completed a questionnaire about wrist guard use and snow-sport behaviour. The site and severity of fractures were recorded by clinic staff. Logistic regression was used to determine adjusted odds ratios for risk factors against the main outcome measure of wrist fracture and injury in snowboarders with and without wrist guards.

Characteristics strongly associated with wrist fracture were being of school age (odds ratio [OR], 2.37; P < 0.001) and being a novice at snowboarding (OR, 3.41; P < 0.001) (Box). After adjustment for all significant variables — sex, age, days of snowboarding and snowboarder ability — the odds of having worn wrist guards were lower in snowboarders with a wrist fracture (cases) than in those without such a fracture, but the difference did not reach significance (adjusted OR, 0.58; 95% CI, 0.32–1.04; P = 0.07). Full analysis of all factors considered is available from the authors.

Among the sample of 494 snowboarders, 15 had elbow injuries, comprising:

• five with soft tissue injuries (4/86 wearing wrist guards v 1/391 not wearing wrist guards; adjusted OR, 17.6; 95% CI, 1.93–160.2; P = 0.01); and

• 10 with elbow fractures or dislocations (3/86 wearing wrist guards v 77/391 not wearing wrist guards; adjusted OR, 1.84; 95% CI, 0.46–7.30; P = 0.39).

The association between wrist guard use and increased soft tissue elbow injuries, but not elbow fractures and dislocations, supports the value of wearing wrist guards to reduce overall injury severity.

Despite a lack of overall statistical significance, the clinical context and consistency in direction of the findings suggest that snowboarders who wear wrist guards in Australian snow conditions could benefit from a reduction in wrist fracture injury of approximately 42%. This is consistent with reports from other countries that show a protective effect of wrist guards of 52% to 87%, with the greatest benefit in novice snowboarders.4 We suggest that wrist guard use should be strongly recommended for novices, and should be mandatory for school-aged snowboarders. Local schools in the Mansfield district, near Mt Buller, have adopted a policy of “no wrist guard = no snowboard”, and we hope that other schools visiting Mt Buller, and indeed other ski resorts in Australia, will follow this lead.