Muscles in the Chest

By Amelia Son, PTA

Muscles in the Chest

Chest muscles Anatomy

Chest muscles Anatomy

There are multiple muscles in the chest and they all have specific purposes.  The following article will discuss the muscles, where they are located, their function, and common injuries to the muscles of the chest.

The muscles in the chest are as follows;

  • Pectoralis Major – it is a large fan-shaped muscle that stretches from the armpit to the collarbone and all the way down across the lower chest on both sides of the rib cage. It connects at the sternum/breastbone.  It moves the shoulder joint in four directions and helps keep the arm attached to the body and in the socket.
  • Pectoralis Minor – It is a thin-triangle shaped muscles that runs up and down along the upper ribs. It is located underneath the pectoralis major and assists with shoulder movement.
  • Trapezius – This muscle runs across the neck, shoulders, and back. It assists with shoulder and shoulder blade movements.
  • Rhomboid Major – This muscle is attached to the shoulder blade and also helps with shoulder movement.
  • Infraspinatus – It is a rotator cuff muscle that helps with specifically raising and lowering the arm.
  • Teres Major – A muscle that assists with rotating the upper arm in the socket
  • Serratus Anterior – This muscle is located in the rib cage and helps keep the shoulder blade attached to the chest wall. It also helps rotate the shoulder blade upward.
  • Deltoid – This is the “cap” on top of the shoulder that gives the shoulder its round shape. It also helps with raising and rotating the arm.
  • Latissimus dorsi – This is a flat rectangular muscle in the back of the shoulder. It helps with rotation as well as moving the arm away and toward the body.

Injuries

While some injuries to the muscles of the chest, some are very common.  One of the muscles that are rarely injured is the pectoralis major.  Symptoms of an injured pectoralis muscle are a pain in the chest, bruising, and decreased muscle strength.  With the infraspinatus being part of the rotator cuff muscle, it is commonly injured and sometimes requires surgery for correction.

Another common muscle that gets injured is the pectoralis major.  It is most commonly injured during weightlifting and bodybuilding exercises.  It usually puts excessive strain on the shoulders and chest.  While the others are able to get injured, these are the most common injuries to muscles of the chest.

Here at Jacksonville Orthopaedic Institute, we have multiple physical therapists and occupational therapists that are more than equipped to deal with all injuries and issues pertaining to the muscles of the chest.  If you believe that you have a chest muscle or bone injury, please feel free to call our offices for more information and to make an appointment!

 

JOI Fracture and Injury Care

JOI Physicians are currently offering ASAP fracture and injury care. Further, this is a new option for patients who would like to avoid the emergency room if they have suffered a fracture or soft tissue injury. To learn more about this service, read this article about fracture and injury care. Make an appointment by calling (904)JOI-2000.

Please do not hesitate to call JOI for your medical needs. Further, we have surgeons that can help diagnosis your tear and therapy staff waiting to help rehab you back to full health! Please call JOI-2000 or click the banner below to schedule with one of our specialists.

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Written by: Amelia Son, PTA


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