Sagittal Plane Control
The management of forward and backward motion (flexion and extension) through orthotic design, particularly relevant to ankle and knee function during gait.
Full Definition
Sagittal plane control refers to the capacity of an orthotic device to govern movement occurring in the sagittal plane — the plane dividing the body into left and right halves — specifically flexion and extension at joints such as the ankle, knee, and hip. In orthotic services, editors will encounter this term in clinical justification documents, prescription rationales, and outcome reports where a clinician explains why a device must resist, assist, or permit a particular range of forward or backward motion. Misreading this as a general stability term can lead to editorial misrepresentation of the device's function. It is distinct from coronal or transverse plane control, which govern side-to-side and rotational movements respectively.
Usage
Usage note: Do not conflate with general 'stability'; always clarify the anatomical plane when editing clinical documents.
In Context
- "The rigid ankle section was incorporated specifically to provide sagittal plane control and prevent excessive plantarflexion at initial contact." — Clinical outcome report
- "When editing the device specification, note that sagittal plane control differs from mediolateral stability and should not be used interchangeably." — Editorial style guide note