• Pohlig-Hüft-Abduktions-Orthese (PHAO) | © Pohlig GmbH
    Hip abduction
Icon Pohlig-Hüftabduktions-Orthese | © Pohlig GmbH
What is an PHAO?

The hip abduction orthosis holds the hips in the medically required abduction position.


An orthetic aid printed on a 3D printer.

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Pohlig-Hüft-Abduktions-Orthese (PHAO) | © Pohlig GmbH

Hip abduction at night

The PHAO allows movement

In cooperation with the Aschau Children’s Clinic, we were able to develop a dynamic abduction orthosis for the hip that enables children to sleep well. The PHAO (Pohlig Hip Abduction Orthosis) holds the hips at night in the medically required abduction position, but restricts the mobility of the hips and knee joints only as much as absolutely necessary.

The orthosis consists of light plastic shells, which are manufactured after body scanning and have a free-moving knee joint that allows knee flection at any time. Using a specially developed multi-joint mechanism, a gas-filled spring brings the hip joints into the required correction position. If there is a spasticity or the child turns independently, the spring will give way and allow the legs to be spread briefly. Relaxes the muscles again, the gas spring gently expands and the abduction of the hip joints is restored.

Protected hip joints despite night-time position changes

Sleep better with PHAO

Pohlig-Hüft-Abduktions-Orthese (PHAO) | © Pohlig GmbH
Why a hip abduction orthosis?

Especially in the case of spastic paralysis (especially in infantile cerebral palsy), but also in the context of other neurological diseases, pathological changes occur such as covering deficits or decentralization of the hip joints. This is due to a variety of reasons and urgently requires pediatric orthopedic care or monitoring.

In most cases, hip abduction must be performed to protect the hip joints. This is generally used at night and in resting phases.

Pohlig-Hüft-Abduktions-Orthese (PHAO) | © Pohlig GmbH
Turn around independently while you sleep

Conventional positioning shells that do not allow any movement have not really proven themselves in everyday life and are not tolerated by most children. This is not surprising, because changing your position several times is a key prerequisite for a good night’s sleep. Because people usually turn around 26 times a night and in two thirds of all cases choose a lateral sleeping position, a rigid positioning of the vulnerable hip represents an enormous burden for many patients and their families.

We have therefore set ourselves the goal of developing orthosis care that, despite the abduction treatment, allows independent rotation without the need for external assistance. 

PHAO mit Klemmschutz | © Pohlig GmbH

Ergonomic and aesthetic!

3D printing opens up new perspectives

The PHAO offers completely new perspectives for affected patients and their caregivers. As the night-time help becomes obsolete when turning, the sleep quality of the entire family improves. Patients who need to be turned are also more mobile and not bedded in a rigid system.

3D printing technology opens up new paths in both the visual and ergonomic design of the device. Breathable zones, innovative locking techniques and partially flexible areas can be integrated, for example. The design and improved wearing comfort of the 3D-printed PHAO lead to an overall higher acceptance of the device in everyday life. 

Going to sleep with the PHAO


We offer orthoses at the following locations:

Icon Spiralhandorthese

You can find further individual orthoses for the lower and upper extremities here:

Physiotherapie | © Pohlig GmbH

In order to make optimal use of the orthosis or prosthesis in everyday life, it is a good idea to receive training from a physiotherapist.