James C Vailas

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OBJECTIVE To prospectively observe and compare injury patterns between hypermobile and nonhypermobile NCAA athletes. DESIGN AND SETTING Athletes were screened for generalized joint hypermobility before the 1995 lacrosse season. Injuries were recorded through the end of the postseason and compared in hypermobile and nonhypermobile athletes. SUBJECTS A(More)
OBJECTIVE To determine the prevalence of joint hypermobility in a group of adolescent, interscholastic athletes. DESIGN Cross-sectional; descriptive or observational. SETTING Free preparticipation physical examinations for sports. SUBJECTS Two hundred and sixty-four athletes (150 male, 114 female; average age, 15.5 years) comprised the entire set of(More)
Although magnetic resonance (MR) imaging has been established as an accurate diagnostic modality for knee pathology, the cost-effectiveness of this test is not known. In this investigation, we formulated a mathematical equation to assess cost-effectiveness and then used this formula to evaluate the use of knee MR as a diagnostic modality in acute knee(More)
Bracing of the anterior cruciate-deficient knee remains controversial. Close review of published data has revealed enough common observations about braces that strong suggestive information can be utilised for clinical purposes until more concrete data are provided. Brace function can vary with design. The primary differences noted are between the(More)
This study surveyed orthopedic surgeons regarding anterior cruciate ligament (ACL) bracing practices. Surveys were mailed to 1194 members of the American Orthopaedic Society for Sports Medicine. The return rate was 24% (n = 287). Descriptive analysis revealed that 13% of physicians never brace ACL-reconstructed patients, whereas only 3% never brace(More)
Since most studies designed to prove the efficacy of functional anterior cruciate ligament (ACL) bracing have been equivocal, we felt it would be helpful to know the practices of orthopedic sports medicine physicians. Physicians were questioned about their brace prescription practices via a mailed survey. The response rate was 56% (114/205). Most physicians(More)
In acetabular fractures, the size of a significant posterior wall fragment remains undefined as it affects joint stability. The purpose of this study was to quantitatively evaluate fragment size and hip stability in cadaveric specimens after serial osteotomies. Also, the role of the posterior capsule, in the various osteotomies, was evaluated for changes in(More)
To evaluate magnetic resonance imaging (MRI) of meniscal, ligamentous, and bony abnormalities in patients without clinical symptoms, scans were performed on 74 asymptomatic volunteers without histories or symptoms of knee injury. Before review by three radiologists in an independent and blinded fashion, the scans were mixed with 26 MRI scans from(More)
Injuries to the distal femoral epiphysis are not common, but when they do occur, at least half of them occur in sports. Many athletic trainers work with skeletally immature athletes, thereby increasing the likelihood that they will face this type of injury. The case of a 14-year-old football player who sustained a Salter-Harris III fracture of his medial(More)
STUDY DESIGN Descriptive laboratory study. OBJECTIVE To determine whether the placement of padding beneath the occiput after helmet removal is an effective intervention to maintain neutral sagittal cervical spine alignment in a position comparable with the helmeted condition. SUMMARY OF BACKGROUND DATA Current on-field recommendations for managing(More)