Linburg-Comstock Anomaly Test Special Test
Orthopedic Physical Examination & Clinical Assessment Guide
What is it used for?
- Detecting an anatomical connection between the FPL (Thumb) and FDP (Index) tendons.
How to Perform
- Position: Examiner restricts the index finger in extension.
- Action: Patient attempts to flex the thumb IP joint.
Interpretation of Results
- Positive Test: Pain in the forearm or inability to flex the thumb.
- Meaning: The tendons are adhered/connected, causing tenosynovitis symptoms.
Clinical Context & Limitations
The Linburg-Comstock Anomaly Test should be considered as one component of a comprehensive musculoskeletal assessment. No single special test has perfect diagnostic accuracy; thus, clinical decision-making should integrate test results with patient-reported symptoms, mechanism of injury, functional impairment, and relevant imaging.
Clinicians should be aware of potential false-positive results in patients with pain sensitisation, muscle guarding, or poor relaxation. For the Wrist & Hand region, combining the Linburg-Comstock Anomaly Test with complementary examination tests significantly improves overall diagnostic confidence.
References
- Magee, D. J. (2021). Orthopedic Physical Assessment.
