L1 Nerve Root (L1)
Peripheral Nerve Supply
Nerve | Roots | Motor Innervation | Cutaneous Innervation |
---|---|---|---|
Ilioinguinal N. | |||
Iliohypogastric N. | |||
Genitofemoral N. |
Motor Innervation
Dermatome
Compression
Compression of L3 nerve root includes:
- Pain in the middle lumbar spine, upper buttock, whole anterior thigh and knee, medial knee, and just above the ankle2
- Dural signs of prone knee flexion
- SLR will occassionally be positive2
- ↓ Extension ROM
- Weakness
- Hypoesthesia of the medial aspect of the knee and lower leg2
- Patellar reflex Absent (0) or reduced (1)
References
1.
Gray H. Anatomy of the Human Body. 20th ed. (Lewis WH, ed.). Lea & Febiger; 1918. https://www.bartleby.com/107/
2.
Dutton M. Dutton’s Orthopaedic Examination, Evaluation, and Intervention. 5th ed. McGraw Hill Education; 2020.
Citation
For attribution, please cite this work as:
Yomogida N, Kerstein C. L1 Nerve Root (L1). https://yomokerst.com/The
Archive/Anatomy/Nerve Roots/L1_nerve_root.html