Management of Knee Extension Weakness

Initial Assessment and Management Plan

A comprehensive biopsychosocial assessment should be performed, including physical status evaluation, assessment of activities of daily living, evaluation of participation in work, education, leisure, and social roles, assessment of mood and psychological factors, and determination of health education needs, according to the American College of Rheumatology 1
The initial approach to managing weakness in knee extension should include an individualized exercise regimen focusing on quadriceps strengthening, with particular attention to vastus medialis activation, as recommended by the British Journal of Sports Medicine 1, 2
A thorough physical examination should include evaluation of quadriceps muscle strength, movement patterns of the lower extremity, tissue tolerance to load, presence of effusion or other signs of inflammation, and patellofemoral joint structure and function, as suggested by the British Journal of Sports Medicine 2, 4

A progressive knee extensor strengthening program should be implemented, including quad sets, short-arc quad sets, long-arc quad sets, and closed-chain exercises, as recommended by the American Geriatrics Society 5
Exercises should be performed 5-7 times, 3-5 times daily, with contractions held for 6-7 seconds and 2-3 seconds rest between repetitions, according to the American Geriatrics Society 5

Patients should be provided with information about their condition and its management, including maintenance and pacing of activity, and establishment of short-term and long-term goals, as recommended by the American College of Rheumatology 3, 6, 7
Education should be tailored to the person's illness perceptions and educational capability, and action plans should be developed with regular evaluation and follow-up, according to the American College of Rheumatology 6, 7

Additional interventions may be considered, including hip strengthening exercises, prefabricated foot orthoses, taping techniques, appropriate footwear recommendations, and walking aids, as suggested by the British Journal of Sports Medicine and the American College of Rheumatology 2, 3, 4

Initiating general quadriceps strengthening before addressing vastus medialis/lateralis imbalance should be avoided, as well as prescribing high-impact aerobic training, focusing only on knee extension strength, neglecting psychological aspects of rehabilitation, and failing to provide adequate education, according to the American Geriatrics Society, the British Journal of Sports Medicine, and the American College of Rheumatology 2, 4, 5, 6