Medicine and Health Sciences Commons^™

Influence Of Foot Position On Lower Extremity Muscle Activity, Hayley J. Letvin

Physical Therapy Scholarly Projects

Being that the anterior cruciate ligament (ACL) is the most commonly torn ligament, much research has been performed regarding this matter. Females have been found to be more likely to tear their ACL. This may be due to strength, structural (anatomical), hormonal, and neuromuscular differences compared to men. Several studies have also been conducted to help improve preventative measures with using strengthening and neuromuscular training programs. Many speculations have been made about the precipitating factors of an ACL injury. The general consensus in regard to foot placement is that the foot is usually placed in pronation during an ACL tear. …

Fiber Type And Cross-Sectional Area Characteristics In Hindlimb Muscles Of The Long-Lived Ames Dwarf Mouse, Kristine Dahlheimer

Physical Therapy Scholarly Projects

Background: Ageing is associated with sarcopenia and a change of composition in muscle fibers. Ames dwarf mice have been found to have a decreased susceptibility to the deleterious effects of the ageing process, when compared to a normal mouse counterpart. This study looks at the muscle composition of the Ames dwarf mouse compared to the normal mouse by analyzing two muscles, ELD and Sol.

Methods: Researchers harvested hind limb muscles from Ames dwarf mice and normal mice. The fours muscles were EDL, Sol, Gastrocnemius/Plantaris, and TA. EDL and Sol were sliced and stained with fast and slow twitch and H&E …

Low Back Pain With Psoas Tightness, Trevor Northagen

Physical Therapy Scholarly Projects

Background and Purpose

Low back pain is a prevalent healthcare issue which has a number of causes. There are many types of treatment with varying levels of success. The psoas is a back muscle which may undergo changes in a patient with back pain. Treatment may have to be modified if changes are seen in the psoas.

Case Description

A 66 year-old woman reported low back and right hip pain, as well as right-sided abdominal pain around a surgical incision. The physical therapy examination revealed adhered scar tissue around the incision, psoas muscle tightness, as well as low back and …

Influence Of Foot Position On Lower Extremity Muscle Activation, Casey Darling

Physical Therapy Scholarly Projects

The anterior cruciate ligament (ACL) in the knee is often sprained or torn in injuries resulting from jumping, cutting, or hyperextension of the knee. When the knee is put under a valgus, varus, or rotatory stress it can put strain on the ACL. Lower extremity motor control can help control the amount of varus and valgus stress on the knee. Lower extremity muscle control is involved with preventing this stress and resulting injuries. This study was performed to determine whether the position of the foot (neutral, supination, and pronation) has an effect on lower extremity muscle activity during single-leg squats. …

Effect Of Frontal Plane Foot Position On Lower Extremity Muscle Activation And Limb Positioning In A Single Leg Squat, Marissa N. Laddusaw

Physical Therapy Scholarly Projects

Purpose/Background: This goal of this study was to reach a bottom up understanding of ACL injury occurrence. Subtalar position during single leg stance may affect the muscles associated with the knee joint and promote ACL injury. The muscle activity of six muscles of the leg, thigh, and hip were analyzed during a single leg squat with the foot on surfaces of 10 degrees decline, five degrees decline, neutral, and 5 degrees incline, and 10 degrees incline.

Methods: Seventeen healthy participants between the ages of 18 and 30 performed five rhythmically timed repetitions of single leg squats on surfaces of 10 …

Charcot Foot Ulceration, Katelin Sievert

Physical Therapy Scholarly Projects

This case report follows the treatment of a 64 year old male with a Charcot foot ulceration of the right foot. The study was conducted to assess the outcome of wound care to the stage three pressure ulcer and the use of a Total Contact Cast (TCC) in the treatment of the Charcot foot ulceration, as well as to present more awareness to the medical field on Charcot foot pathology and diagnosis. The study was conducted over a 16 week time period. After 15 sessions with the patient, the results showed that wound care, the use of a TCC, and …

Fiber Type And Cross-Sectional Area Characteristics In Hindlimb Muscles Of The Long-Lived Ames Dwarf Mouse, David Farder

Physical Therapy Scholarly Projects

Background: Aging is associated with sarcopenia and a change of composition in muscle fibers. Ames dwarf mice have been found to have a decreased susceptibility to the deleterious effects of the aging process, when compared to a normal mouse counterpart. This study looks at the muscle composition of the Ames dwarf mouse compared to the normal mouse by analyzing two muscles, extensor digitorum longus (EDL) and soleus (Sol).

Methods: Researchers harvested hind limb muscles from Ames dwarf mice and normal mice. The fours muscles were EDL, Sol, Gastrocnemius/Plantaris, and tibialis anterior (TA). EDL and Sol were sliced and stained with …

Effect Of Frontal Plane Foot Position On Lower Extremity Muscle Activation And Limb Positioning In A Single Leg Squat, Elizabeth J. Kornkven

Physical Therapy Scholarly Projects

Purpose/Background: Foot positioning during a single leg landing may affect the muscles above the ankle joint and promote positions of increased vulnerability to ACL injury. The purpose of the study was to analyze muscle activity of six muscles in the lower extremity during completion of a single leg squat on the subject’s dominant leg with the subtalar joint in 5 different positions.

Methods: Seventeen healthy males and females (ages 18‐30) performed five single leg squats in five foot positions: neutral, five degrees and ten degrees of declination, and five degrees and ten degrees of inclination. Electromyography data was collected from …