Biceps Femoris Reflex
Published August 7, 2026
Read time 1 min read
Readers 16
What is the "Biceps Femoris Reflex" used for?
- S2 Nerve Root Reflex
- Biceps femoris (Tibial, common peroneal)
How to perform the "Biceps Femoris Reflex"?
- Patient Position: Prone with the knee flexed to approximately 20°
- Position of Examiner: Standing next to the patient. The thumb is placed over the biceps femoris tendon just proximal to the joint line.
- Evaluative Procedure: The thumb is tapped with a reflex hammer.
What is the positive result?
| Grade |
Response |
| 0 |
No reflex elicited |
| +1 |
Hyporeflexia: Reflex elicited with reinforcement (precontracting the muscle) |
| +2 |
Normal response |
| +3 |
Hyperreflexia (brisk) |
| +4 |
Hyperactive with clonus |
References
