Shoulder Impingement

shoulder impingement

What’s up ? This is THE stephane ANDRE. With my training, I’m interested in biomechanics to avoid injuries. I read « Sport Medicine Media Guide » and I learned some good stuff.

Impingement is the fact of having mechanical compression and/or tendon wear of the rotator cuff. Rotator cuff is composed of a serie of 4 muscles connected to the shoulder blade at the humeral head (upper part of the shoulder joint). The function of the rotator cuff is to maintain the humeral head within the glenoid (socket) during normal shoulder function and to participate in shoulder strength during activity. Normally, the rotator cuff glides gently between the inferior surface of the acromion, the bone at the point of the shoulder and the humeral head.

Causes

Any process that can interfere with rotator cuff being able to glide normally can cause impingement. The causes are :

  • Weakening

  • Degeneration of the tendon due to aging

  • Formation of the bone spurs

  • Inflammation of tissues on the space above the rotator cuff

  • Injury due to overuse

Overuse activities that can lead to impingement are most commonly seen in tennis players, pitchers and swimmers.

Diagnosis

shoulder impingement

Diagnosis can be made with the patient’s history and physical examination. Patients suffering impingement often complain of pain in the shoulder. This pain worsens with overhead activity and can be so strong that it causes an awakening during the night. Manipulation of the shoulder in a specific way by a doctor will usually reproduce the symptoms and confirm the diagnosis. X-rays are also useful for the evaluation of the presence of bone spurs and/or the narrowing of the subacromial space.

Treatment

The first thing to do is to eliminate identifiable causes or factor that contribute to the pain. This means temporarily avoiding activities like tennis, pitching or swimming. A non steroidal anti-inflammatory medication may also be recommended by your doctor. The treatment is based on exercises aimed at restoring flexibility and normal strength to the shoulder girdle, especially by strengthening the muscles of the rotator cuff and the muscles responsible for the normal movements of the scapula (shoulder blade). This program may be performed by a doctor, a certified athletic trainer or a qualified physiotherapist. Sometimes a cortisone injection may be helpful in the treatment.

Surgery

Surgery isn’t necessary in most case of shoulder impingement. But if the symptoms persist despite non-surgical treatment, surgical intervention may be beneficial. Surgery involves deriding or surgically removing, tissue that is irritating the rotator cuff. This can be done with open or arthroscopic technique. The result is favorable in about 90% of cases.

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-Steph

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Acromioclavicular Joint Injury

acromioclavicular joint injury

What’s up ? This is THE stephane ANDRE. With my training, I’m interested in biomechanics to avoid injuries. I read « Sport Medicine Media Guide » and I learned some good stuff.

Acromioclavicular joint is a joint between the clavicle and the scapula. Acromion is a continuation of the scapular spine and hooks over anteriorly. It articulate with the clavicle (collar bone ) to form the acromioclavicular joint.

Problems types

The most common problems are arthritis, fracture and separation. Arthritis is characterized by a loss of joint’s cartilage. Arthritis of acromioclavicular joint is common with weight lifter, especially with bench press and a little less with shoulder press. When there is a problem with the rotator cuff, it’s possible that there is also acromioclavicular joint’s arthritis.

Acromioclavicular separation

acromioclavicular joint injury type grade

When there is an acromioclavicular joint separation, it means that the ligament that connects the acromion and clavicle is damaged and that the 2 structures don’t align properly. Separation’s state can be weak or severe, that is why there is a system of « grade » according to which ligament is torn and the severity of the tear.

Grade I Injury – This is the weakest damage and the acromioclavicular joint is still aligned.

Grade II Injury – This is an average damage. Ligaments are only stretched but not fully torn. In case of stress (physical effort), the acromioclavicular joint becomes painful and unstable.

Grade III Inury – This is a serious damage. Ligaments are completely torn and the collar bone is no longer attached to the scapula, which creates a visible deformity.

Treatment of acromioclavicular joint arthritis

If the rest, ice, medications and change of the training program (changing the exercises) don’t work, the next step is a shot of cortisone. A shot of cortisone in the joint may have calmed the pain and may be permanently swollen. As each individual is unique, the effects may vary and it’s possible that it doesn’t swell permanently.

If non-surgical methods fail, it’s possible to perform a surgical operation. The pain is localized at the bones end that make contact with each other and the goal of the operation is to remove some of the end of the clavicle. This ambulatory surgery can be done with a small incision of 1 inch (2.5 cm) long or with the arthroscopy technique with 2-3 incisions. The results and recovery of these 2 surgical techniques are about the same. Most patients have a full movement by 6 weeks and can return to do sport by 12 weeks.

Treatment for acromioclavicular separation

Separation can create very painful injuries, so the first thing to do is to decrease the pain. Hold the arm in a sling, put ice and pack the shoulder for 20-30 minutes every 2 hours as needed. Acetaminophen and non-steroidal anti-inflammatory medications can also help calm the pain.

When the pain begins to subside, it’s important to move the fingers, wrists and elbow (and eventually the shoulders) in order to avoid having stiff or « frozen » shoulder. The length of time needed to regain complete movement and function depends on the severity or injury’s grade.

Recovery from Grade I acromioclavicular separation usually takes 10-14 days while Grade III takes 6-8 weeks.

When surgery

Grade I and II separations require very rarely surgery. With a Grade III injury, after surgery, it’s possible to have full body physical activity with some restrictions.

Statistics

  • More males than females suffer acromioclavicular joint injuries

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-Steph

How To Do Trap Bar Shrugs

trap bar shrugs

I read a Frederic Delavier’s book « Strength Training Anatomy » and I learned good stuff.

Standing with your legs slightly apart. You’re in front of the trap bar on the floor or on a support :

  • Take the trap bar, paying attention to centering your grip (attention : with heavy weight, a poorly adjusted grip will rock the bar backwards or forwards).

  • You have your head straight or a little bent forwards and your abs squeezed. Do shoulder shrugs.

This exercise works the upper trapezius which is inserted on the clavicle, the acromion and the scapular spine and which goes up to the superior nuchal line the the skull.

The rhomboid major / minor muscles and levator scapulae muscle work a little bit.

The trap bar created to work trapezius by lifting heavy weights without rubbing against the thighs like dumbbells or barbell.

la barbell.

Note

People with long clavicles will always have more difficulty doing shoulder shrugs than people with short clavicles.

Share this article if you think it can help someone you know. Thank you.

-Steph