---
title: Acromioclavicular (AC) Joint Arthritis
description: This arthritis affects a joint at the top of your shoulder. It's where the shoulder blade's bony protrusion (called the "acromion") meets the clavicle. This joint acts as a pivot point when you raise your arm above your head.
date_modified: "2021-08-25T11:50:11-04:00"
---

 

#####  Acromioclavicular (AC) Joint Arthritis 

This arthritis affects a joint at the top of your shoulder. It's where the shoulder blade's bony protrusion (called the "acromion") meets the clavicle. This joint acts as a pivot point when you raise your arm above your head.

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