Journal of the American Podiatric Medical Association

33 KB

Open AccessArticle

Preventive foot care in people with diabetes

by American Diabetes Association

J. Am. Podiatr. Med. Assoc. 2000, 90(1), 51-52; https://doi.org/10.7547/87507315-90-1-51 - 1 Jan 2000

Viewed by 120

Foot ulcers and amputations are a major cause of morbidity, disability, and costs for people with diabetes [...] Full article

67 KB

Open AccessArticle

Sagittal plane biomechanics. American Diabetes Association

by Howard J. Dananberg

J. Am. Podiatr. Med. Assoc. 2000, 90(1), 47-50; https://doi.org/10.7547/87507315-90-1-47 - 1 Jan 2000

Cited by 56 | Viewed by 204

Abstract

During walking, the center of body mass must pass from behind the weightbearing foot to in front of it. For this to take place, the foot must function as a sagittal plane pivot. Because the range required for this motion is approximately five [...] Read more.

During walking, the center of body mass must pass from behind the weightbearing foot to in front of it. For this to take place, the foot must function as a sagittal plane pivot. Because the range required for this motion is approximately five times as great as both frontal and transverse plane motion, its evaluation should become an essential part of a podiatric biomechanical assessment. Lack of proper sagittal plane motion and its sequelae are described. Full article

► Show Figures

Figure 1

134 KB

Open AccessArticle

The windlass mechanism of the foot. A mechanical model to explain pathology

by Eric A. Fuller

J. Am. Podiatr. Med. Assoc. 2000, 90(1), 35-46; https://doi.org/10.7547/87507315-90-1-35 - 1 Jan 2000

Cited by 141 | Viewed by 1292

Abstract

This article presents a mechanical model that can be used to understand the foot, to help develop methods of treatment of foot pathology, and to provide direction for future research in foot mechanics and pathology. The anatomy and mechanical function of the windlass [...] Read more.

This article presents a mechanical model that can be used to understand the foot, to help develop methods of treatment of foot pathology, and to provide direction for future research in foot mechanics and pathology. The anatomy and mechanical function of the windlass mechanism of the foot are analyzed using principles of mechanical engineering. The principles of force couples and free-body diagrams are explained and then applied to the foot. The relationship of the windlass mechanism to plantar fasciitis or heel spur syndrome, hallux abducto valgus, and hallux limitus is discussed. Full article

► Show Figures

Figure 1

100 KB

Open AccessArticle

Biomechanics of the normal and abnormal foot

by Kevin A. Kirby

J. Am. Podiatr. Med. Assoc. 2000, 90(1), 30-34; https://doi.org/10.7547/87507315-90-1-30 - 1 Jan 2000

Cited by 68 | Viewed by 452

Abstract

The foot is an engineering marvel that allows the body to perform many physical activities over a wide variety of terrain with remarkable efficiency. The functions of the foot and the lower extremity are biomechanically integrated; thus normal lower-extremity function requires normal foot [...] Read more.

The foot is an engineering marvel that allows the body to perform many physical activities over a wide variety of terrain with remarkable efficiency. The functions of the foot and the lower extremity are biomechanically integrated; thus normal lower-extremity function requires normal foot function and vice versa. Because the subtalar joint is the main pedal joint allowing the triplanar translation of motion between the foot and lower extremity, normal subtalar joint function is critical to normal foot and lower-extremity function. This article provides an overview of the interrelationships between foot and lower-extremity function and mechanically based pathology of the foot and lower extremity, with an emphasis on the subtalar joint. Full article

► Show Figures

Figure 1

124 KB

Open AccessArticle

Dynamic foot orthoses. Principles and application

by David J. Pratt

J. Am. Podiatr. Med. Assoc. 2000, 90(1), 24-29; https://doi.org/10.7547/87507315-90-1-24 - 1 Jan 2000

Cited by 5 | Viewed by 217

Abstract

Previous research has identified areas under the foot where stimulation evokes specific tonic reflexes. The term "tonic" is used because these reflex movements occur slowly, as if tonus or tension were accumulating, in contrast to the abrupt phasic response of a tendon jerk. [...] Read more.

Previous research has identified areas under the foot where stimulation evokes specific tonic reflexes. The term "tonic" is used because these reflex movements occur slowly, as if tonus or tension were accumulating, in contrast to the abrupt phasic response of a tendon jerk. The concept of tonic reactions has now been incorporated into the design of dynamic foot orthoses to help provide improved orthotic treatment with a better functional outcome. This article describes the background of this technique, briefly describes the manufacture of the dynamic orthosis, and outlines some of its uses. Full article

► Show Figures

Figure 1

61 KB

Open AccessArticle

Timing of peak plantar pressure during the stance phase of walking. A study of patients with diabetes mellitus and transmetatarsal amputation

by Valerie E. Kelly, Michael J. Mueller and David R. Sinacore

J. Am. Podiatr. Med. Assoc. 2000, 90(1), 18-23; https://doi.org/10.7547/87507315-90-1-18 - 1 Jan 2000

Cited by 25 | Viewed by 120

Abstract

High plantar pressures contribute to skin breakdown in patients with diabetes mellitus and peripheral neuropathy. The primary purpose of this study was to determine the point during the stance phase of walking that corresponds with forefoot peak plantar pressures. Results indicate that peak [...] Read more.

High plantar pressures contribute to skin breakdown in patients with diabetes mellitus and peripheral neuropathy. The primary purpose of this study was to determine the point during the stance phase of walking that corresponds with forefoot peak plantar pressures. Results indicate that peak plantar pressures occurred at 80% +/- 5% of the stance phase of gait in subjects with diabetes and transmetatarsal amputation, as well as in control subjects. Improved methods of footwear design or walking strategies proposed to patients should focus on the demands of the foot during the late stance phase of walking in order to increase available weightbearing area or to decrease forces, which will minimize plantar pressures and reduce trauma to the neuropathic foot. Full article

123 KB

Open AccessArticle

Biomechanics of the tarsal mechanism. A key to the function of the normal human foot

by Anthony Huson

J. Am. Podiatr. Med. Assoc. 2000, 90(1), 12-17; https://doi.org/10.7547/87507315-90-1-12 - 1 Jan 2000

Cited by 29 | Viewed by 146

Abstract

This article describes the function of the tarsal complex as a constrained mechanism. The relationship between the interdependence of the motions of the tarsal joints and the special nature of tarsal joint function is explained, with emphasis on the midtarsal joint and its [...] Read more.

This article describes the function of the tarsal complex as a constrained mechanism. The relationship between the interdependence of the motions of the tarsal joints and the special nature of tarsal joint function is explained, with emphasis on the midtarsal joint and its presumed two axes of motion. Full article

► Show Figures

Figure 1

75 KB

Open AccessArticle

The effect of foot orthoses on transverse tibial rotation during walking

by Thomas G. McPoil and Mark W. Cornwall

J. Am. Podiatr. Med. Assoc. 2000, 90(1), 2-11; https://doi.org/10.7547/87507315-90-1-2 - 1 Jan 2000

Cited by 43 | Viewed by 124

Abstract

The purpose of this study was to determine the effectiveness of two types of foot orthoses in controlling the magnitude and rate of internal tibial rotation, measured by the tibial pointer device, during walking. Ten subjects between the ages of 23 and 43 [...] Read more.

The purpose of this study was to determine the effectiveness of two types of foot orthoses in controlling the magnitude and rate of internal tibial rotation, measured by the tibial pointer device, during walking. Ten subjects between the ages of 23 and 43 years volunteered to participate in the study. Prior to data collection, each subject was issued two types of foot orthoses: a pair of rigid, plastic orthoses with posting in either the forefoot or the rearfoot, and a pair of soft, accommodative, premolded orthoses with no posting. All subjects wore standardized footwear. Following a controlled break-in period for both footwear and orthoses, each subject was asked to walk at a self-selected speed over a 12-m walkway while the movement of internal tibial rotation was recorded with a video camera during five trials. The results indicated that both the rigid plastic and the accommodative foot orthoses significantly reduced the magnitude and the rate of internal tibial rotation. No significant difference was noted between the soft and rigid foot orthoses conditions. Full article

► Show Figures

Figure 1

Journal Menu

Journal Browser

J. Am. Podiatr. Med. Assoc., Volume 90, Issue 1 (01 2000) – 8 articles , Pages 2-52

Further Information

Guidelines

MDPI Initiatives

Follow MDPI