Source: Tafsir al-Ahlam al-Kabir (Ibn Sirin)
The shoulder in a dream indicates a brother or a friend. Its strength is the brother's strength, and its weakness is his weakness. Its dislocation indicates separation from the brother.
Source: Ta'tir al-Anam fi Ta'bir al-Manam (Al-Nabulsi)
The shoulder indicates the wife or the partner. Whatever happens to it reflects on them.
Source: Al-Isharat fi Ilm al-Ibarat (Ibn Shahin)
The shoulder is interpreted as a child. The right shoulder is the son, and the left is the daughter.