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Medical Disability Advisor  >  Internal Derangement Of Knee  >  Failure To Recover  see more: ACOEM - Knee Disorders

Internal Derangement of Knee

Related Terms

  • Knee Instability
  • Torn Ligament(s)
  • Torn Meniscus

Differential Diagnoses

Specialists

  • Orthopedic (Orthopaedic) Surgeon
  • Physiatrist
  • Physical Therapist
  • Sports Medicine Physician

Comorbid Conditions

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Factors Influencing Duration

Factors influencing length of disability depend on the nature of the derangement, fitness level and age of the individual, intervention requirements, adherence to a rehabilitation program, proper rest interval, job requirements, the development of complications, and the presence of comorbid conditions or prior injury to the knee. Any task that stresses an already compromised knee will prolong and exacerbate the problem.

Duration Trends from Reference Data

DURATION TRENDS
 ICD-9-CM: 717, 717.8, 717.9  
CasesMeanMinMaxNo Lost TimeOver 6 Months
47725302510.4%2.1%
 
  
 
Percentile:5th25thMedian75th95th
Days:9224171146
 
  
 

Medical Codes

ICD-9-CM:
717 - Internal Derangement of Knee; Degeneration, Rupture (old), or Tear (old) of Articular Cartilage or Meniscus of Knee
717.8 - Other Internal Derangement of Knee
717.9 - Unspecified Internal Derangement of Knee

Failure to Recover

If an individual fails to recover within the expected maximum duration period, the reader may wish to consider the following questions to better understand the specifics of an individual's medical case.

Regarding diagnosis:

  • Did the pain or swelling result from a fall, twisting injury, or blow from an object or person (blunt force trauma)?
  • Is the shape of the knee distorted?
  • Is there pain or tenderness over the kneecap?
  • Has individual undergone diagnostic tests such as x-ray, MRI, CT scans, arthroscopy, or ultrasound?

Regarding treatment:

  • Does individual have a mild injury that resolved without treatment?
  • Does the knee derangement require rest and rehabilitation?
  • Does the injury call for surgical intervention?
  • Does the derangement require professional rehabilitation guidance?

Regarding prognosis:

  • Is individual's employer able to accommodate any necessary work restrictions?
  • Does individual have any underlying conditions or complications that may affect the ability to recover?
  • Is individual compliant with the recommended program of rest and rehabilitation?
  • Has the individual experienced previous knee injury?

Source: Medical Disability Advisor


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