抄録
A case Report
An eighteen-year-old man was injured while playing rugby. He tackled and fell. His left scapula was hit hard on the ground. He started to feel pain along the medial edge of the left scapula and could not elevate his left arm over head.
He showed a characteristic posture. His left scapula shifted upper and rotated laterally. When he tried to move his left scapula medially, he felt such strong pain that he could not move. There was no abnormality of the left shoulder joint or rotator cuff.
A radiogram showed the same displacement of the left scapula. No cuff tear or rupture of the muscle ware on the ultrasonography, CT or MRI.
On the electromyogram two weeks later, the left rhomboid muscles showed a low voltage and the trapezius was normal.
Conservative treatment by clavicular band relieved the pain. After one month, his scapula was winging. He only could not move his left scapula medially. He started muscle exercises of the scapula to adduction. He took six months to recover full power of his rhomboid muscles. After ten months, the symptoms were completely relieved.
It seems that such cases caused by traction or compression injury of the dorsal scapular nerve in sports is quite rare as is a traumatic acute paralysis of the nerve.
