There is no Spurling sign. Slight to moderate weakness is present in the right upper limb in radial wrist extension, radial wrist flexion, forearm pronation, and flexion of the thumb, index and middle fingers. Profound weakness is present in ulnar wrist extension and extension of all digits. No weakness is found in ulnar wrist flexion or flexion of the distal phalangeal joints of the ring and little fingers. Proximal to the elbow, strength appears intact including the shoulder girdle muscles.
Muscle strength is also intact in the left upper limb and both lower limbs.
The biceps and triceps reflexes are present and symmetric, as are the muscle stretch reflexes in the lower limbs. A mild deficit of appreciation of pain and light touch is present over the tip of the right middle finger. At this point, review your differential diagnosis, and revise as appropriate. The evidence points to at least two focal lesions, one involving the median nerve and the other the radial nerve. Since weakness of radial wrist extension is less than weakness of the muscles innervated by the posterior interosseus nerve, there may be two separate lesions of the radial nerve, for a total of three focal lesions.