Isolated quadriceps weakness

Quadriceps weakness can be caused by various injuries to the knee or hips, acquired myopathies (diseases that affect muscle tissue) such as Lyme disease and poliomyelitis, inherited myopathies such as certain muscular dystrophies and stroke, or neurological diseases such as multiple sclerosis or Bell’s palsy. An illness or injury that results in prolonged bed rest may cause disuse atrophy of the quadriceps muscles.

Progressive quadriceps weakness can make almost all of your daily activities more difficult: standing up, sitting down, getting into and out of a car, and climbing stairs. Weak quadriceps can affect your gait (walking) and balance and make you more vulnerable to falls.


Typically, your physician or physical therapist will confirm quadriceps weakness and assess or grade the extent of the weakness by conducting a series of muscle strength tests.


Most acute cases of quadriceps weakness can be effectively addressed with physical therapy and by incorporating cardiovascular and strengthening exercises into your daily routine. Individuals with chronic conditions that result in quadriceps weakness may also benefit from the addition of a leg orthosis.

Orthotic management

The products below are designed to help improve mobility for individuals who experience mobility impairments as a result of quadriceps weakness. Whether a product is suitable for you and whether you are capable of exploiting its full functionality depends on many different factors. Your physical condition, fitness, and a detailed medical examination are all factors. Your doctor or orthotist will decide which product would be the most suitable for your condition. We are happy to support you.

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