- What Is It?
- Signs and Symptoms
- How to Treat
- Recovery Times
What is a shoulder injury?
A shoulder injury is an injury to any of the structures in the shoulder joint, including bones, muscles, tendons, ligaments, and cartilages. Shoulders are easily injured because they have a complex structure that provides a wide range of motion. They are the most mobile joints in the body and consequently, the most unstable.
Each shoulder is composed of three bones, the collarbone (clavicle), the shoulder blade (scapula), and the upper arm bone (humerus). The bones are held in place by ligaments, attached to the muscles by tendons, and lined with cartilage to prevent friction between the bones. Fluid-filled sacs, known as bursae, cushion and lubricate the joints, enabling them to glide smoothly.
There are four joints in the shoulder with several muscles, ligaments, and tendons anchoring them, and any of these can get injured. The four joints are:
Sternoclavicular joint: The joint where the clavicle is attached to the upper part of the breastbone (sternum).
Acromioclavicular joint: The joint where the clavicle is attached to a projection in the shoulder blade known as the acromion.
Scapulothoracic joint: Not a true joint but the region where the scapula glides over the thoracic rib cage.
Glenohumeral joint: A highly mobile ball and socket joint in which the head of the humerus forms a ball that fits into a socket (glenoid) in the scapula. The socket is shallow and the ball is larger than the socket, which factors allow maximum movement.
What are the most common shoulder injuries?
Common shoulder injuries include the following:
A shoulder sprain is an acromioclavicular joint (AC joint) injury. The ligaments stabilizing this joint are stretched or partially torn in a low-grade injury and fully torn in a severe injury. A severe injury to the AC joint ligaments can lead to:
- Dislocation: The collarbone gets dislocated and appears as a bump on the shoulder.
- Separation: The collarbone separates from the acromion, and the muscles detach from the collarbone.
A shoulder strain is an injury when a muscle or tendon in the shoulder gets stretched or torn. This can occur with overuse or when the shoulder remains in one position for a long time.
A shoulder tear is an injury to soft tissue such as muscles and tendons which give the joint the range of motion. Shoulder tears are caused by:
- Shoulder subluxation: The humerus gets partially dislodged from the glenoid.
- Shoulder dislocation: The humerus gets fully dislodged from the glenoid.
Shoulder tears can be any of the following:
- Rotator cuff tear: Rotator cuff tear occurs in the group of tendons and muscles that connect the upper arm to the scapula. Rotator cuff muscles stabilize the shoulder and allow the arm to rotate and move in many directions.
- Biceps tendon tear: Biceps tendon tear is a tear in the tendons that connect the biceps muscles to the shoulder.
- Labral tear: Labral tear is a tear in the cartilage known as the labrum which lines the shoulder socket. Labral tears may be:
- Superior labrum anterior and posterior (SLAP): Labral tear in the top part of the socket.
- Bankart tear: Labral tear in the bottom part of the socket.
Other shoulder injuries include:
- Bone fracture: Break in the shoulder bones
- Shoulder impingement: The acromion puts pressure on the soft tissues beneath when the arm is lifted away from the body. It can cause bursitis and tendinitis.
- Frozen shoulder: Stiffness and pain that limits movement, caused by abnormal bands of tissue (adhesions) from old injuries.
What are the signs and symptoms of shoulder injury?
The symptoms of shoulder injury include the following:
- Stiff and painful shoulder
- Swelling and bruising
- Inability to rotate the arm in all the normal positions
- A feeling as if the shoulder may slide out of the socket
- Lack of strength to lift or perform daily activities with the shoulder
What are the causes of shoulder pain?
The main causes of shoulder pain include the following:
- A traumatic injury from a fall with impact on the shoulder, or a blow to the shoulder, such as from an accident
- Overuse of the shoulder in excessive overhead motion in sports such as swimming, daily activities that involve excessive repetitive motion, or poor posture while typing
- Wearing out of cartilage with age (osteoarthritis)
- Inflammation of the bursae (bursitis) or tendons (tendinitis)
- Conditions such as rheumatoid arthritis
- Bone spurs in the joint
Shoulder pain may also result from:
How do you treat a shoulder injury?
The first treatment for minor injuries is to avoid movements that cause pain and RICE (rest, ice, compression, and elevation). Other treatments include:
- Medications for pain and inflammation
- Physical therapy and exercises
- Surgery in severe injuries
How long does a shoulder injury take to heal?
Soft tissues usually take a fairly long period to heal. Severe shoulder injuries can take six months or more to heal and sometimes may never completely heal. Cartilage tears in particular take a long time because they have no blood supply.
Latest Chronic Pain News
Daily Health News
Health Solutions From Our Sponsors
Top What Are the Most Common Shoulder Injuries? Related Articles
Bursitis Symptoms and TreatmentsDiagnosed with bursitis? Learn about treatment and prevention for trochanteric bursitis, as well as hip, knee, shoulder and other bursitis types.
Dislocated ShoulderThe shoulder is the most often dislocated joint in the body due to its mobility. Dislocation occurs when the head of the humerus is dislocated from its socket. Symptoms and signs of a shoulder dislocation include nausea and vomiting, lightheadedness, weakness, and sweating. There are various methods of reducing a dislocation and returning the humeral head to its normal place. The method for reduction of a shoulder dislocation depends upon the type of dislocation, the patient, the situation, and the clinician's experience. Intravenous narcotics and muscle relaxants are often administered to relax the muscles and relieve pain.
Frozen ShoulderA frozen shoulder (adhesive capsulitis) is when the shoulder joint experiences a significant loss in its range of motion due to inflammation, scarring, or injury. Treatment involves anti-inflammatory medication, cortisone injections, and physical therapy.
How Do You Fix Shoulder Impingement?Your shoulder is made up of several joints, tendons (flexible inelastic cord), and muscles that provide a great range of motion to your arm. This group of muscles and tendons is called the rotator cuff.
Frozen ShoulderIt's got nothing to do with cold weather. It means your shoulder is jammed up. WebMD guides you through the causes of frozen shoulder and what you can do about it.
Shoulder and Neck PainShoulder and neck pain may be caused by bursitis, a pinched nerve, whiplash, tendinitis, a herniated disc, or a rotator cuff injury. Symptoms also include weakness, numbness, coolness, color changes, swelling, and deformity. Treatment at home may incorporate resting, icing, and elevating the injury. A doctor may prescribe pain medications and immobilize the injury.
Shoulder BursitisShoulder bursitis is inflammation of the shoulder bursa. Bursitis may be caused by injury, infection, or a rheumatic condition. Symptoms include pain, swelling, tenderness, and pain with movement of the shoulder joint. Treatment may involve ice compresses, rest, and anti-inflammatory medications and depends on whether there is an infection.
What Are Shoulder Muscles Called?Shoulder muscles are required for movements of the upper limb. They also give the shoulders their characteristic shape. The shoulder has multiple muscles. Shoulder muscles include the intrinsic muscles or scapulohumeral group, including the deltoid, teres major and four rotator cuff muscles. The extrinsic shoulder muscles are the trapezius, latissimus dorsi, levator scapula and rhomboids (rhomboid major and rhomboid minor).
What Causes Shoulder Dystocia?Shoulder dystocia is a medical emergency condition during the delivery in which the baby’s shoulder gets stuck inside the womb after its head passes through the vaginal canal. This is usually caused when the baby’s body is wider as compared to the mother’s vaginal opening during labor.
What Does It Mean to Reduce a Shoulder Dislocation?Your shoulder is a ball-and-socket joint where the head of the humerus (ball) fits into the glenoid cavity (socket) of the scapula bone. When the humerus slips out of the glenoid cavity, the condition is known as a shoulder dislocation.
What Is a Hemiarthroplasty of the Shoulder?A hemiarthroplasty of the shoulder is a surgical procedure that involves the replacement of the ball (humeral head) with the prosthesis, and the socket (glenoid) is left intact.
What Is a Shoulder Subacromial Injection?Injecting corticosteroids into the subacromial space is one method to treat inflammation and pain. Injections can reduce pain and inflammation and restore the mobility of shoulder joints.