Is it true that the only bony connection between the shoulder girdle and the bony thorax is the acromioclavicular joint?

• A. True
• B. False
• C. Only in adults
• D. Only in children

Answer: (B)

The statement that the only bony connection between the shoulder girdle and the bony thorax is the acromioclavicular joint is false. The primary bony connection between the shoulder girdle and the thorax is through the sternoclavicular joint, which is located where the clavicle articulates with the manubrium of the sternum. This joint allows for the movement of the shoulder girdle as it connects the upper limb to the trunk.

The acromioclavicular joint, while important for shoulder movement and stability, specifically connects the acromion of the scapula to the clavicle. However, it does not directly connect to the bony thorax; thus, it is not the sole bony connection. Understanding the anatomy of the shoulder girdle and its connections helps clarify the significance and functions of these joints in upper extremity movement.