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Sedentary Work Exerting up to 10 pounds (4.5 kg) of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally and other sedentary criteria are met.

Light Work Exerting up to 20 pounds (9.1 kg) of force occasionally and/or up to 10 pounds (4.5 kg) of force frequently, and/or negligible amount of force constantly to move objects. Physical demand requirements are in excess of those for Sedentary Work. Light Work usually requires walking or standing to a significant degree. However, if the use of the arm and/or leg controls requires exertion of forces greater than that for Sedentary Work and the worker sits most the time, the job is rated Light Work.

Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

Heavy Work Exerting up to 100 pounds (45.4 kg) of force occasionally, and/or up to 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Very Heavy Work Exerting in excess of 100 pounds (45.4 kg) of force occasionally, and/or in excess of 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Job Classification

In most duration tables, five job classifications are displayed. These job classifications are based on the amount of physical effort required to perform the work. The classifications correspond to the Strength Factor classifications described in the United States Department of Labor's Dictionary of Occupational Titles. The following definitions are quoted directly from that publication.

Sedentary Work Exerting up to 10 pounds (4.5 kg) of force occasionally and/or a negligible amount of force frequently or constantly to lift, carry, push, pull, or otherwise move objects, including the human body. Sedentary work involves sitting most of the time, but may involve walking or standing for brief periods of time. Jobs are sedentary if walking and standing are required only occasionally and other sedentary criteria are met.

Light Work Exerting up to 20 pounds (9.1 kg) of force occasionally and/or up to 10 pounds (4.5 kg) of force frequently, and/or negligible amount of force constantly to move objects. Physical demand requirements are in excess of those for Sedentary Work. Light Work usually requires walking or standing to a significant degree. However, if the use of the arm and/or leg controls requires exertion of forces greater than that for Sedentary Work and the worker sits most the time, the job is rated Light Work.

Medium Work Exerting up to 50 (22.7 kg) pounds of force occasionally, and/or up to 25 pounds (11.3 kg) of force frequently, and/or up to 10 pounds (4.5 kg) of forces constantly to move objects.

Heavy Work Exerting up to 100 pounds (45.4 kg) of force occasionally, and/or up to 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Very Heavy Work Exerting in excess of 100 pounds (45.4 kg) of force occasionally, and/or in excess of 50 pounds (22.7 kg) of force frequently, and/or in excess of 20 pounds (9.1 kg) of force constantly to move objects.

Amputation


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Overview

Amputation is the calculated surgical removal of all or part of an extremity when its blood supply is irreversibly compromised by disease or severe injury. By contrast, traumatic amputation is the accidental severing of the body part (See Amputation Foot, Traumatic, and Amputation Leg, Traumatic). The same general principles apply to both forms of amputation, especially regarding wound closure, rehabilitation, and use of artificial limbs (prosthetics). The aim is to remove diseased or damaged tissue, relieve pain, and to prepare a site for a prosthesis, helping the individual return to the most comfortable and functional life possible.

Amputations may be performed at any level in the upper extremities such as the digits, the hand, or the arm, or in the lower extremities such as the toes, the foot, or the leg. The point at which the limb or digit is incised and removed is known as the amputation level; surgeons determine the amputation level by measuring blood flow in the area, determining where complete healing is most likely to occur with least risk of complications, and evaluating which level would permit the greatest function and most efficient use of a prosthesis following rehabilitation. Optimum function may be gained when the amputation level is closer to the diseased or damaged part of a limb (distal amputation), while the risk of complications is reduced when the amputation level is higher and a greater portion of the limb is removed (proximal amputation). Amputation levels are referred to by site as upper extremity (UE), above elbow (AE), below elbow (BE), lower extremity (LE), above the knee (AK), below the knee (BK), or through the knee (TK). More recent terminology classes the amputation by the major bone transected, e.g., transtibial means below knee, transradial means below elbow, and transfemoral means above knee.

Source: Medical Disability Advisor