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.

Fracture, Calcaneus


Related Terms

  • Calcaneal Fracture
  • Calcaneus Fracture
  • Extra-Articular Calcaneus Fracture
  • Heel Fracture
  • Intra-Articular Calcaneus Fracture
  • Os Calcis

Specialists

  • Occupational Therapist
  • Orthopedic (Orthopaedic) Surgeon
  • Physiatrist (Physical Medicine and Rehabilitation Specialist)
  • Physical Therapist
  • Sports Medicine Physician

Comorbid Conditions

Factors Influencing Duration

The type of fracture, involvement and amount of joint surface disruption, treatment, and amount of weight bearing required for job activities may all affect disability. Duration of disability depends on job requirements and whether job duties can be performed while seated. Heavy work is not usually compatible with intra-articular fracture of the calcaneal body. Duration of disability can be affected by age, diabetes, vascular disease and associated nerve injury. Other factors include non-union and post-traumatic arthritis.

Medical Codes

ICD-9-CM:
825.1 - Open Fracture of Calcaneus (Heel Bone)

Prognosis

Conservative treatment of the 25% of calcaneal fractures that do not involve the joint surface and are not displaced usually results in a positive outcome (Nicklebur). Intra-articular fractures have a poorer long-term prognosis than extra-articular fractures. If the calcaneus heals with significant deformity (widening) and if the fracture involves the subtalar joint, the individual is more likely to experience chronic pain and stiffness. Realigning (reducing) the subtalar joint and thus restoring the heel to its original position improves the long-term prognosis. Early heel joint motion is critical for the restoration of function.

Recent studies of operative treatment (open reduction) for displaced calcaneal fractures reveal a good to excellent outcome in 70% to 80% of cases (Murphy). The success rate decreases as the number of bone fragments increases. The failure rate for operative treatment of fractures in which the calcaneus is broken into many small pieces (comminuted fracture) has been reported to be as high as 73% (Murphy).

Source: Medical Disability Advisor






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