For people who use a prosthesis or orthosis, correct alignment of the device with the body is an important matter in terms of posture and quality of movement. Static alignment refers to assessing whether the device's joint and load lines are in an appropriate position while the person is standing; this assessment can be considered together with a general posture analysis. These assessments are carried out by orthotic-prosthetic technicians in line with the specialist physician's prescription and medical report.
Why Static Alignment Is Important
Appropriate static alignment helps the device establish a balanced relationship with the body's axis. The aims of assessing alignment are generally the following:
- Contributing to the reduction of incorrect positions
- Supporting a more balanced posture
- Observing the distribution of load along appropriate lines
- Helping to make balance control easier
How Posture and Force Measurement Is Done
In modern static alignment practice, ground reaction forces can be measured while the person stands on a measurement platform; these measurements can be interpreted together with dynamic assessments made during walking. The data obtained are projected onto an image of the person, and the position of the force lines relative to the joints is assessed. This method helps to observe the effect that supporting a joint has on the load line and to make the necessary fine adjustments.
The Assessment Process
Alignment analysis is an individualized process. Prosthetic fitting is carried out taking into account the type of device, the person's anatomical characteristics and their daily living needs. Measurement results are interpreted in cooperation between the physician and the technical team, and adjustments are planned when necessary.
This content is for informational purposes only; you should consult your physician for diagnosis and treatment.
