Complex sentence: A post-mortem revealed he had swallowed a tooth after being punched, and other injuries included a broken back, broken ribs, having the tips of fingers sliced off, and nails pulled out.
Split into simpler sentences: A post-mortem revealed he had swallowed a tooth after being punched. Other injuries included a broken back, broken ribs, having the tips of fingers sliced off, and nails pulled out.