Session 2: Myotomes Flashcards
Define myotome.
A group of muscles supplied by a single spinal nerve.
Define motor unit.
A motor neurone and the skeletal muscle fibres that the motor neurone innervates.
Movements of: C5
Shoulder abduction and external rotation.
Movements of: C6
Elbow flexion, wrist extension and supination.
Movements of: C7
Elbow extension, wrist flexion and pronation. Basically the opposite of C6!
Movements of: C8
Finger flexion and finger extension.
Movements of: T1
Finger abduction and adduction.
Movements of: L2
Hip flexion.
Movements of: L3
Knee extension
Movements of: L4
Ankle dorsiflexion
Movements of: L5
Great toe extension
Movements of: S1
Ankle plantar-flexion
Movements of: S2
Great to flexion
What is Hilton’s law?
The nerves supplying the joint capsule also supply the muscles that move the joint and the skin overlying the insertions of the muscles.
Define neural level.
The lowest level of fully intact sensation and motor function.
If you have a patient with femoral nerve injury in the inguinal region (groin). Where will the patient have anaesthesia most likely?
In the cutaneous distribution of the femoral nerve. (Anterior femoral cutaneous nerve and the saphenous branch).
If you have a patient with femoral nerve injury in the inguinal region (groin).
Where will the patient have paralysis most likely?
In the muscles that are supply by the femoral nerve distal to the site of injury. This means that any muscles supplied proximally to the injury will be spared.
