Complex sentence: Plain x-rays of the shoulder can be used to detect some joint pathology and variations in the bones, including acromioclavicular arthritis, variations in the acromion, and calcifcation.
Split into simpler sentences: Plain x-rays of the shoulder can be used to detect some joint pathology and variations in the bones. They can be used to indentify acromioclavicular arthritis, variations in the acromion and calcifcation.