Understanding the Jackson Compression Test (Vertical Compression) Assessment
To detect general **nerve root irritation** or **facet joint pathology** (less specific than Spurling's).
Watch How It's Done
How do I start?
Patient is sitting with the head held in a neutral position.
What happens?
The examiner applies a **gentle, vertical compression force** directly through the patient's head.
In Plain English
What Does a Positive Result Mean?
Reproduction of **local cervical pain** (suggesting facet joint or muscle issues) or **radicular pain/paresthesia** into the arm (suggesting nerve root compression).
Helpful Tip:
Less sensitive and specific than Spurling's, as it does not isolate the foramen.
Safety First
This guide is to help you understand what happens in a clinic. Do not try to diagnose yourself. If you have severe pain, swelling, or cannot put weight on your leg, please visit an urgent care center or your doctor immediately.
Other Cervical Spine Tests
Distraction Test (Cervical)
To relieve symptoms associated with **Cervical Radiculopathy** (nerve root compression) or **Facet Joint irritation**.
Foraminal Compression Test (Spurling's Test)
To detect **Cervical Radiculopathy** caused by nerve root compression, usually due to **foraminal stenosis** (bone spurs) or a **disc herniation**.
Lhermitte's Sign
To screen for **central nervous system pathology** such as **Multiple Sclerosis (MS)**, cervical myelopathy, or other spinal cord lesions.
Maximal Cervical Compression Test
To assess for general **cervical nerve root compression** and **facet joint irritation**.