William S. Quillen

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Transitional movements are a determinant of functional independence and have limited study in amputees. Microprocessor prosthetic knees' abilities to assist transfemoral amputees with sitting and standing have not been studied. Through cross-sectional study, 21 transfemoral amputees, divided into 3 groups of 7 by knee type (power knee, C-leg, Mauch SNS) and(More)
Sports medicine practioners must be prepared to aggressively treat musculoskeletal trauma with both therapeutically sound and time efficient regimens. Thorough early treatment is essential for prevention of further trauma, for an expedient recovery, and for the earliest possible return to activity. The present study sought to evaluate the efficacy of rapid(More)
The purpose of this study was to assess the relationships between obesity and measures of back and core muscular endurance in firefighters. Methods. A cross-sectional study was conducted in career firefighters without low back pain. Obesity measures included body mass index (BMI) and body fat percentage assessed with air displacement plethysmography.(More)
Microprocessor prosthetic knees (MPKs) have advanced technologically, offering new features to decrease impairment and activity limitations for persons with transfemoral amputation (TFA). The Genium knee is functionally untested, and functional differences between it and intact knees are unknown. This study sought to determine whether Genium use improves(More)
PURPOSE Low back pain is a leading cause of disability in firefighters and is related to poor muscular endurance. This study examined the impact of supervised worksite exercise on back and core muscular endurance in firefighters. DESIGN A cluster randomized controlled trial was used for this study. SETTING The study occurred in fire stations of a(More)
BACKGROUND Approximately 683 persons engaged in military service experienced transtibial amputation (TTA) related to recent war in Iraq and Afghanistan. Military TTAs function at a level beyond basic ambulation. No empirical data demonstrate which higher functioning prosthetic feet maximize injured service personnel's ability to continue performing at a(More)
This pilot study compared the energy expenditure required to climb an indoor rock wall, in amputees utilizing five prosthetic configurations. Three experienced climbers (1M age 21 yr, 2F ages 30 and 49 yr) with unilateral transfemoral amputation climbed a 9.14 m indoor rock wall, 5.9 Yosemite Decimal Scale rating, using the following prosthetic(More)
  • W S Quillen
  • The Journal of orthopaedic and sports physical…
  • 1981
Soft tissue ankle injuries, particularly lateral ligament sprains, cause considerable disability and loss of time from activities. These injuries are commonly and frequently treated by physical therapists. Controversy exists over the efficacy of various methods for the nonoperative management of these injuries. A comprehensive program for the management of(More)
BACKGROUND AND AIM Longer residual limb lengths provide an increased lever arm. Longer residual limbs may produce increased joint moments; the two may be correlated. These correlations have not been evaluated in transfemoral amputees during transitional movements. Correlations between residual limb length and involved side joint moment could contribute to(More)