Certified Hand Therapist (CHT) Practice Exam

Which instability is most commonly evaluated in hand therapy?

1. Ulnar bony instability

2. Collateral ligament instability

3. Carpal bone instability

4. Extensor tendon instability

The correct answer is: Collateral ligament instability

Collateral ligament instability is commonly evaluated in hand therapy because the collateral ligaments play a crucial role in stabilizing the fingers during both active and passive movements. These ligaments are located on either side of the finger joints, primarily the metacarpophalangeal (MCP) joints, and are critical for maintaining joint integrity and functionality. Injuries to the collateral ligaments can occur due to trauma, such as falls or direct impacts, and can lead to significant instability, resulting in pain, decreased range of motion, and impaired hand function. Therefore, therapists focus on assessing the integrity of these ligaments during evaluations to determine the appropriate course of rehabilitation or surgical intervention. Evaluating collateral ligament stability allows therapists to identify specific areas where the patient may struggle, guiding them in creating tailored treatment plans aimed at restoring strength, mobility, and overall hand function. Consequently, addressing collateral ligament instability is a fundamental component of hand therapy practice.