- Flex patient's knee to 90°
- Place reflex hammer below patella
- Strike patellar tendon
Normal:
- Knee extends
Patellar Reflex: (L2, L3, L4)
©
Patellar Reflex: (L2, L3, L4)
- Flex the knee to 90°
- Place the reflex hammer below the patella
- Strike the patellar tendon sharply
- Observe for knee extension
Normal response: Brief knee extension
Abnormal responses:
- Absent or diminished reflex
- Clonus
- Upgoing toe
©
ASSESSING REFLEXES
d