A tear at the origin of the deltoid muscle is uncommon and usually occurs as a complication of shoulder surgery.

撕裂的起源三角肌是罕见，通常发生的肩部手术后的并发症。

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A tear at the origin of the deltoid muscle is uncommon and usually occurs as a complication of shoulder surgery.

撕裂的起源三角肌是罕见，通常发生的肩部手术后的并发症。

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