Stairmaster-induced pelvic avulsions mimicking metastatic disease: case report.
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This study examined the effects of strength, aerobic fitness, and activity profile on the incidence of overuse injuries, particularly stress fractures, during military training. A total of 136 military recruits were followed during 9 weeks of basic training. Maximal strength and aerobic fitness were determined by a one-repetition maximum leg press and a 2,000-m run, respectively. An activity profile was determined by the recruit's activity history. Twelve recruits (8.8%) were diagnosed with stress fractures. Recruits who were 1 SD below the population mean in both absolute (98.4 +/- 36.6 kg) and relative strength (1.72 +/- 0.61 kg/kg of body weight) had a five times greater risk for stress fracture (p < 0.05) than stronger recruits. Poor aerobic fitness did not appear to be related to any increased incidence of stress fracture. It appears that recruits with lower body strength levels, within 1 SD of the population mean, have a reduced incidence of stress fractures during military training.
Groin pain is common among athletes. In its acute form the pain is usually overuse-related and is treated conservatively, whereas in chronic groin pain the clinical picture is often more complex. Successful treatment is dependent on correct diagnosis, as there are multiple differential diagnosis. Surgery has been associated with good results in chronic cases, the most common interventions being adductor tenotomy, abdominal wall repair, and neurotomy of the ilioinguinal and/or iliohypogastric nerve. Which surgical approach should be adopted is dependent on the results of investigation to identify the causative factor.
Running-related injuries are increasingly common, and most often due to overuse. This article briefly discusses the biomechanics of running, and a general review of stress lesions of bone; site-specific reviews of bony stress lesions and other running-related soft tissue injuries; and associated MR imaging findings.
Swimming injuries are unique in that they involve upper limb overuse more than lower limbs and that swimming is performed in a non-weight-bearing fluid setting. Identifying the mechanism of injury and prescribing appropriate management is not easy unless one has a thorough understanding of proper technique of the four competitive strokes. Understanding the psychology of swimming athletes will improve outcome and compliance. The goals of this article are to familiarize the reader with the diagnosis and management of swimming injuries and to improve the physician's effectiveness in dealing with swimmers through a thorough understanding of technique and psychology.
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