Along with injuries and joint complications in the lower back and knees, shoulder injuries are among the leading causes of issues affecting everyday functional ability in the general population. Upper neck and shoulder impingement, rotator cuff strains, and frozen shoulder are among a slew of conditions that can afflict people’s shoulder health, causing pain, weakness, and lack of productivity. Completing a round of physical therapy to rehab a shoulder complication is invaluable to the recovery process of a shoulder complication. However, after the shoulder has been rehabbed and the irritation has subsided, it doesn’t stay that way forever. To stave off a shoulder injury that has been rehabbed by avoiding strenuous activities and complying with a physical therapist’s guidelines, a maintenance routine and consistent injury-prevention exercises must be followed to ensure this sensitive joint doesn’t get re-injured.
Shoulders are unique joints that enable humans to perform a variety of intricate and sophisticated movements, such as reaching overhead, throwing overhead, and reaching in various ranges of motion, including in front, to the side, and behind the body. Think of actions such as putting one’s arms through a jacket, putting a hair tie behind the head, or reaching for a seat belt and fastening it. These movements may seem simple. However, the shoulder’s ability to move through a larger range of motion also reveals a less structurally sound joint.
A successful learning application we’ve found helpful for our personal training clients managing shoulder injuries involves understanding and appreciating the muscles of scapular stabilization that hold the ball-and-socket structure of the shoulder joint together. The shoulder shares a similar joint structure to its cousin, the hip joint. Both joints are ball-and-socket joints, meaning they both include a long, shaft-like bone with a bony knob at the end that fits snugly into a socket. Similar to a gimbal mechanism that holds cameras on tripods and allows pivot-like movements, both joints have ligaments, tendons, and muscular attachments that connect the bones from the socket to the knob at the end of the bone, allowing a wide range of movement and providing stability.
The shoulder joint has a shallower socket than the hip joint. This shallow socket allows a greater range of motion than the hip socket, enabling us to use our arms and hands to grab and manipulate objects more intricately than our lower extremities can in everyday functionality. While a greater range of motion is beneficial, this means there is less bone-to-bone attachment, and the shoulder joint has an increased demand on the ligaments, tendons, and muscles that attach the head of the humerus to the shoulder socket. Therefore, the shoulder joint is less stable than the hip joint and has unique properties that require special attention to the muscles, tendons, and ligaments that hold it together.
The scapula, or shoulder blade, is of great significance to the structural integrity of the shoulder joint. Residing in the top and lateral portion of the ribcage on the back of the body, an intricate layout of muscles originates and attaches to the shoulder blades. The muscles of scapular stabilization attach to portions of the spine, rib cage, and humerus to power the movements that allow the arms to travel through their large range of motion. Since the shoulder has limited bone-to-bone attachment, the structures that serve as a reinforcing framework to hold the shoulder in place are muscles. Therefore, education on which muscles connect the scapula to the humerus and on which exercises reinforce the strength, endurance, and structural integrity of the scapular stabilization muscles shouldn’t be overlooked.
A simple and effective exercise we conduct with our personal training clients to prevent shoulder injuries is scapular protraction and retraction, performed at the beginning of every training session. To perform the scapular protraction and retraction movement:
Lift your arms and bend them at about a ninety-degree angle. Make sure your arms are in line with your armpits. While maintaining your elbows at a ninety-degree angle and keeping your fingertips facing forward, glide your shoulder blades forward along your rib cage until you feel a stretch in the upper back and a muscular sensation in your pectoral region. Reverse the motion and glide your shoulder blades backward against your ribs. You should feel a muscular sensation in the muscles surrounding your shoulder blades. Repeat this movement for five to ten repetitions.
The shoulder joint enables humans to be productive in their everyday lives by using their upper extremities to perform complex tasks. It’s easy to underestimate the value of our shoulders until an unfortunate injury impedes the simplest movements, like putting on a shirt. By incorporating and consistently practicing shoulder injury-prevention techniques at least once per week alongside a safe, effective exercise routine, the likelihood of developing a shoulder injury decreases significantly, helping us be more productive in our everyday lives.
Sean McCawley, the founder and owner of Napa Tenacious Fitness in Napa, CA, welcomes questions and comments. Reach him at 707-287-2727, napatenacious@gmail.com, or visit the website napatenaciousfitness.com.










