Scott K. Crawford

University of Wisconsin–Madison | UW · Department of Kinesiology; Department of Orthopedics and Rehabilitation

Objectives: Ultrasound often corroborates clinical diagnosis of Achilles tendinopathy (AT). Traditional measures assess macromorphological features or use qualitative grading scales, primarily focused within the free tendon. Shear wave imaging can non-invasively quantify tendon elasticity, yet it is unknown if proximal structures are affected by t...

Background Hamstring strain injury (HSI) diagnosis is often corroborated using ultrasound. Spatial frequency analysis (SFA) is a quantitative ultrasound method that has proven useful in characterizing altered tissue organization. The purpose of this study was to determine changes in muscular tissue organization using SFA following HSI. Methods Ult...

Context A National Collegiate Athletic Association Division I female basketball athlete (age = 20 years, height = 190.5 cm, mass = 87 kg) had chronic patellar tendinopathy. Intervention(s) After undergoing unsuccessful conservative treatments, the athlete underwent bilateral open patellar debridement surgery. Pain and dysfunction were assessed via...

Spatial frequency analysis (SFA) is a quantitative ultrasound method that characterizes tissue organization. SFA has been used for research involving tendon injury, but may prove useful in similar research involving skeletal muscle. As a first step, we investigated if SFA could detect known architectural differences within hamstring muscles. Ultras...

Longitudinal quantitative ultrasonic analysis of patellar tendon in collegiate athlete following bilateral debridement: a case report.

Spatial frequency analysis (SFA) is a quantitative ultrasound (US) method originally developed to assess intratendinous tissue structure. This method may also be advantageous in assessing other musculoskeletal tissues. Although SFA has been shown to be a reliable assessment strategy in tendon tissue, its reliability in muscle has not been investiga...

Objective: This study compared the effects of 90 s of manual compressive therapy (MCT) on latent myofascial trigger points (LTPs) for 3 sessions per week for 4 weeks to determine changes in individual pressure pain threshold (PPT). A total of 30 (15 males, 15 females; age = 22 ± 4 y/o, height = 175 ± 18 cm, weight = 162.5 ± 57.5 kg) symptomatic su...

The discus throw is a highly technical event that requires the athlete to perform a sequence of high-speed movements to maximize throw distance. Previous research has demonstrated that release velocity in the horizontal and vertical directions are crucial to throw distance. It has also been shown that angular momentum about the vertical axis (Z Ang...

Patellar tendinopathy is a debilitating condition that often occurs in athletes who participate in jumping sports, such as volleyball or basketball. Ultrasound imaging has previously been used as a diagnostic tool in identifying tendon morphology. However, previous research has not tracked the time course of patellar tendon morphology changes follo...

PURPOSE: Massage therapy is a popular treatment for attenuating muscle soreness and accelerating recovery following eccentric exercise (EEC). Despite the purported benefits of this therapy, the biological mechanisms in response to the applied tissue loads are not fully understood. It is well-known that skeletal muscle is highly-sensitive to the loa...

PURPOSE: Although massage is an increasingly popular modality for a variety of musculoskeletal disorders, including chronic low back pain and exercise-induced muscle injury, the relationship between the applied mechanical loading parameters and clinical outcomes have not yet been elucidated. The purpose of this work was to investigate the contribut...

Muscle injury is a common problem in sports medicine. Myofiber regeneration and repair is often hindered by the development of fibrotic tissue, which results in incomplete functional recovery and, likely in part, a reason for re-injury. A common treatment modality following intense eccentric exercise (EEC) is massage; however, the biologic mechanis...

Background The objective of this study was to quantify the transverse forces in skeletal muscle subjected to constant compressive massage-like loading (MLL) following eccentric exercise (ECC). Methods Twenty-eight New Zealand White rabbits were used for this two-part study. For all testing, a customized electromechanical device was utilized to app...