Abduction Orthosis
An orthosis designed to hold one or both lower limbs in a position of abduction, most commonly used in the management of developmental dysplasia of the hip.
Full Definition
An abduction orthosis positions the hip joint in abduction — and often in flexion and external rotation — to seat the femoral head correctly within the acetabulum and promote normal hip socket development. The Pavlik harness and the Rhino cruiser brace are well-known examples used in infants with developmental dysplasia of the hip (DDH). In editorial contexts, 'abduction orthosis' is the preferred generic term; brand names such as 'Pavlik harness' should be capitalised and used only when the specific device is intended. Editors should not confuse abduction orthoses with abduction pillows, which are passive positioning aids rather than prescribed orthotic devices.
Usage
Usage note: Capitalise brand-name devices (e.g., Pavlik harness, Rhino brace) but use lowercase for the generic device class. Do not use 'abduction brace' as a clinical synonym in formal documents.
In Context
- "The paediatric orthopaedic report described the infant as wearing an abduction orthosis full-time to manage grade III developmental dysplasia of the hip." — Paediatric orthopaedic case note
- "The editor replaced 'Pavlik' with 'abduction orthosis' throughout the general-audience summary to avoid implying a specific brand recommendation." — Patient information leaflet editing