Which statement correctly contrasts static orthosis with serial static orthosis?

Which statement correctly contrasts static orthosis with serial static orthosis?

• A. Serial Static: Static orthosis is remolded periodically as PROM improves in order to achieve further PROM. Static: has no moving parts and is used for support, protection, or correction; often used to support normal hand arches.
• B. Serial Static: It uses moving parts to adjust ROM; Static: has no moving parts.
• C. Serial Static: It is used for protection only; Static: is used for dynamic correction.
• D. Serial Static: It provides continuous motion; Static: uses elastic tension.

Answer: (A)

Serial static orthosis uses a progressive, staged approach to increase range of motion. It consists of a series of nonmoving devices that are worn and then remolded to a new position as passive range of motion (PROM) improves, so the tissues lengthen gradually and more ROM can be gained. In contrast, static orthosis has no moving parts at all and is designed to hold the limb statically for support, protection, or correction, such as maintaining the natural arches of the hand. The idea is not to move the joints with the device, but to position and hold them to allow tissues to lengthen over time. The other statements would imply movement or purposes (like protection only or continuous motion) that don’t align with how serial static and static orthoses function.

Serial static orthosis uses a progressive, staged approach to increase range of motion. It consists of a series of nonmoving devices that are worn and then remolded to a new position as passive range of motion (PROM) improves, so the tissues lengthen gradually and more ROM can be gained. In contrast, static orthosis has no moving parts at all and is designed to hold the limb statically for support, protection, or correction, such as maintaining the natural arches of the hand. The idea is not to move the joints with the device, but to position and hold them to allow tissues to lengthen over time. The other statements would imply movement or purposes (like protection only or continuous motion) that don’t align with how serial static and static orthoses function.