Injury risk is low among world-class volleyball players: 4-year data from the FIVB Injury Surveillance System

This is an Open Access article distributed in accordance with the Creative Commons Attribution Non Commercial (CC BY-NC 4.0) license, which permits others to distribute, remix, adapt, build upon this work non-commercially, and license their derivative works on different terms, provided the original work is properly cited and the use is non-commercial. See: http://creativecommons.org/ licenses/by-nc/4.0/Background: Little is known about the rate and pattern of injuries in international volleyball competition. Objective: To describe the risk and pattern of injuries among world-class players based on data from the The International Volleyball Federation (FIVB) Injury Surveillance System (ISS) (junior and senior, male and female). Methods: The FIVB ISS is based on prospective registration of injuries by team medical staff during all major FIVB tournaments (World Championships, World Cup, World Grand Prix, World League, Olympic Games). This paper is based on 4-year data (September 2010 to November 2014) obtained through the FIVB ISS during 32 major FIVB events (23 senior and 9 junior). Results: The incidence of time-loss injuries during match play was 3.8/1000 player hours (95% CI 3.0 to 4.5); this was greater for senior players than for junior players (relative risk: 2.04, 1.29 to 3.21), while there was no difference between males and females (1.04, 0.70 to 1.55). Across all age and sex groups, the ankle was the most commonly injured body part (25.9%), followed by the knee (15.2%), fingers/thumb (10.7%) and lower back (8.9%). Injury incidence was greater for centre players and lower for liberos than for other player functions; injury patterns also differed between player functions. Conclusions: Volleyball is a very safe sport, even at the highest levels of play. Preventive measures should focus on acute ankle and finger sprains, and overuse injuries in the knee, lower back and shoulder.Seksjon for idrettsmedisinske fag / Department of Sports Medicin

Injuries among male and female World Cup alpine skiers

Background: Limited knowledge exists on injuries among professional alpine skiers. Objective: To describe the risk of injury and the injury pattern among competitive World Cup alpine skiers during the competitive season. Methods: We performed retrospective interviews with all World Cup athletes from 10 nations at the end of the 2006-07 and 2007-08 winter seasons and recorded all acute injuries occurring during the 4.5-month competitive season. If the athlete was not present, we interviewed their coaches or medical personnel. Results: A total of 191 acute injuries were recorded among 521 World Cup alpine skiers. As many as 86 injuries (45%) occurred during World Cup/World Ski Championship competitions, corresponding to an injury rate of 9.8 injuries per 1000 runs (95% confidence interval, 7.8 to 11.9). We found the injury rate to increase with increasing speed (slalom 4.9 injuries per 1000 runs, 95% CI 2.5 to 7.4 - giant slalom 9.2, 5.1 to 13.3 - super-G 11.0, 5.2 to 16.8 - downhill 17.2, 11.6 to 22.7). The most frequently injured body part was knee with 68 injuries (36%) and 37 of these were severe. The overall injury rate was higher in males compared to females, but not for knee injuries. Conclusions: The risk of injury among World Cup athletes in alpine skiing is even higher than previously reported and the knee is the most commonly injured body part and with many severe injuries. Injury rate increased with higher speed and was higher among males compared to females

Reduced survival for uncemented compared to cemented total hip arthroplasty after operatively treated acetabular fractures

Background Post traumatic arthritis and avascular necrosis of the femoral head are common complications after operatively treated acetabular fractures. This may cause severe disabilities for the patient, necessitating a total hip arthroplasty. Even though an arthroplasty may provide good symptomatic relief, the long-term results are more uncertain and no consensus exists according to preferred prosthetic designs. With this cohort study, we aimed to investigate the medium to long term arthroplasty survival and clinical results of total hip arthroplasty after operatively treated acetabular fractures. Methods We included 52 patients treated with a secondary total hip arthroplasty at a median of 2.4 (0.1–14.1) years after an operatively treated acetabular fracture. The median age was 54 (11–82) years. Cemented arthroplasty was used for 33 patients, 10 patients had an uncemented arthroplasty and 9 patients received a hybrid arthroplasty. Average follow up was 8.0 (SD 5.0) years. Results Ten-year revision free arthroplasty survival was 79%. Uncemented arthroplasties had a significantly worse 10-year survival of 57%. Arthroplasties performed at a centre without a pelvic fracture service also had a significantly worse 10-years survival of 51%. Cox regression showed similar results with an 8-fold increase in risk of revision for both uncemented arthroplasties and operations performed at a non-pelvic trauma centre. Conclusion Total hip arthroplasty secondary to an operatively treated acetabular fracture provides good symptomatic relief. These patients are, however, complex cases and are probably best treated at specialist centres with both pelvic trauma surgeons and arthroplasty surgeons proficient in complex revisions present. Reduced survival for uncemented compared to cemented total hip arthroplasty after operatively treated acetabular fractures. Clarke-Jenssen J, Westberg M, Røise O, Storeggen SAØ, Bere T, Silberg I, Madsen JE. Injury. 2017 Nov;48(11):2534-2539. © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license