Seat too wide

Offers no support or stability, the body tends to lean to one side, putting pressure on ischial tuberosities.

Seat too low

An individual’s body weight is supported on a small area, leading to high pressures under the coccyx and buttocks. Feet pushed forward for stability increases heel pressure.

Seat too short

The body weight is supported on a small area. The feet are used for balance and posture, leading to high pressures and discomfort, especially under the thigh.

Seat too high

Difficult to get into and no support for the feet, leading to ankle deformities and restriction of blood flow at the back on the thigh. Heels are at risk when the patient shuffles forward for comfort.

Seat too narrow

Risk of pressure damage to Trochanters. Difficult to get in and out of the chair due to limited movement.

Seat too long

Causes high pressures, especially on the back of the knees and sacrum due to limited knee and ankle flexion, leading to poor posture.