The Knee as a Biologic Transmission With an Envelope of Function

Former Male Elite Athletes Have a Higher Prevalence of Osteoarthritis and Arthroplasty in the Hip and Knee Than Expected

“…If the process continues, it will lead to joint failure. 5,7,11,24 Epidemiological studies support this view, reporting an association both between hip OA and heavy occupations such as shipyard work, mining and farming and also between knee OA and occupations that include squatting and kneeling such as carpeting and floor laying. 31,32 High mechanical stress and repeated traumatic joint injuries in elite athletes have also been shown deleterious for the joint.…”

Cartilage damage: a review of surgical repair options and outcomes

“…The concept of the relationship between duration, intensity, frequency of an applied force on articular cartilage is described as an envelope of injury [30]. Single event traumatic episodes tend to produce lesions isolated to a geographic area and are most often associated with a specific injury event.…”

Not the Last Word: Arthrostasis

“…If a knee is hot and swollen, imaging to determine that the joint is not in homeostasis is unnecessary. Often the simple, logical (but clinically powerful) approach of decreasing the load across the knee to within that joint's ''envelope of function or envelope of load acceptance'' [3], along with cooling and some form of antiinflammatory medication, can be surprisingly effective.…”