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Affected Reflexes

Reflexes affected if nerve root damage

Nerve Root:Reflexes Affected:
C1 None
C2 None
C3 None
C4 None
C5 Biceps, brachioradialis
C6 Biceps, brachioradialis
C7 Triceps
C8 Triceps
T1 Disk lesions @ upper 2 thoracic levels dont give rise 2 root weakness of hand intrinsic muscles r due 2 other pathology. Dural & nerve root stress has T1 elbow flex w/ arm horizontal. T1-2 scapulae ->&back on chest wall. Neck flex at any thoracic level
T2 Disk lesions @ upper 2 thoracic levels dont give rise 2 root weakness of hand intrinsic muscles r due 2 other pathology. Dural & nerve root stress has T1 elbow flex w/ arm horizontal. T1-2 scapulae ->&back on chest wall. Neck flex at any thoracic level
T3-T12 Articular and dural signs and root pain are common. root signs (cutaneous analgesia) are rare and have such indefinite area that they have little localizing value. Weakness not detectable.
L1 None
L2 None
L3 Knee jerk sluggish, PKB positive, pain on full SLR
L4 SLR limited, neck flexion pain, weak or absent knee jerk, side flexion limited
L5 SLR limited one side, neck flexion painful, ankle decreased, crossed-leg raising pain
S1 SLR limited, Achille's reflex weak or absent
S2 SLR limited, Achille's reflex weak or absent
S3 None
S4 None
Created by: Hunter10