Kepner Orthosis Construction and Application

The video tutorial demonstrates the creation of a dynamic extension orthosis, known as the Kepner orthosis, aimed at increasing the range of motion of the PIP joint. It involves using specific materials, such as offie cast strips and calibrated finger coil springs, to exert light traction on tight ligamentous structures. The tutorial covers the preparation of materials, molding of the orthosis, assembly with springs, and final adjustments. The force applied by the orthosis is measured using a dynamometer to ensure it does not exceed 30 degrees of finger flexion.

What is the primary goal of the Kepner Orthosis?

• To increase the range of motion of the PIP joint

• To provide support to the MCP joint

• To stabilize the DIP joint

• To reduce swelling in the finger

What is the width of the first strip of material used for the orthosis?

• 6 centimeters

• 5 centimeters

• 4 centimeters

• 7 centimeters

How long should the first strip of material be?

• 7 to 8 centimeters

• 6 to 7 centimeters

• 5 to 6 centimeters

• 4 to 5 centimeters

What is the purpose of bending the small leg of the spring upward?

• To create a small hook for anchoring

• To reduce the spring's length

• To increase the spring's tension

• To make the spring more flexible

Where should the small hole be cut in the longer strip of material?

• At the corner

• At the edge

• Near one end

• In the middle

What should be done to avoid excess thickness of material between the fingers?

• Twist the lateral edges inward

• Use a different material

• Cut the material thinner

• Fold the material multiple times

Where should the hook of the finger coil spring be attached on the orthosis?

• On the lateral side

• On the medial side

• On the palmar side

• On the dorsal side

What should be done to the spring wire after determining the right length?

• Cut away the excess

• Bend it upwards

• Twist it into a loop

• Leave it as is

How is the force of the orthosis determined?

• By measuring the spring length

• Using a dynamometer

• By visual inspection

• Using a ruler

What is the maximum difference in degrees between the initial and final finger positions to avoid excessive force?

• 10 degrees

• 20 degrees

• 30 degrees

• 40 degrees