What Is Infrapatellar Bursitis?
The acromioclavicular bursa is also known as the deltoid bursa, which is one of the largest bursa of the whole body. It is located below the acromion, coracoid ligament and deep deltoid fascia of the deltoid muscle, above the rotator cuff and large humerus tuberosity. Due to the acute and chronic injury of the shoulder, inflammation stimulates the acromion bursa, which causes shoulder pain and limited mobility. It is called acromitis bursitis.
Basic Information
- nickname
- Deltoid sac
- English name
- subacromial bursitis
- Visiting department
- orthopedics
- Common locations
- Acromion bursa
- Common causes
- Trauma, supraspinatus tendon injury, degenerative changes, prolonged compression and stimulation
- Common symptoms
- Pain, restricted movement, local tenderness
- Contagious
- no
Causes of acromion bursitis
- It can be caused by direct or indirect trauma, supraspinatus tendon injury or degenerative changes, long-term compression and stimulation.
Clinical manifestations of acromion bursitis
- General symptoms
- Pain, restricted movement, and local tenderness are the main symptoms of acromion bursitis. The pain is aggravated gradually, and the pain is more severe at night. The pain becomes worse during exercise, especially during abduction and external rotation (squeezing the bursa). Pain is usually deep in the shoulder, involving the deltoid stops, etc. It can also radiate to the scapula, neck and hands.
- Local symptoms
- There are tender points at the shoulder joint, under the acromion, and large nodules, which can be displaced with the rotation of the humerus. When the bursa is swollen with fluid, the entire shoulder area and deltoid muscle are tender. To reduce pain, patients often place the shoulder joint in adduction and rotation positions to reduce the squeeze stimulus to the bursa. With the thickening and adhesion of the bursal wall, the range of motion of the shoulder joint gradually decreases and disappears completely. Atrophy of the scapular muscles can be seen at a later stage.
Acromion bursitis examination
- X-ray film can be found on the supinus muscle calcium.
Diagnosis of acromion bursitis
- According to the symptoms and X-ray results, the diagnosis is generally not difficult.
Complications of acromion bursitis
- In severe cases, shoulder fibrosis may be complicated.
Acromion bursitis treatment
- First find out the cause of the original cause and implement targeted treatment. Acute treatment includes rest, anti-inflammatory analgesics, physical therapy, acupuncture, and placing the affected limb in the abduction and outward rotation position. Local injection of steroid hormones has a good effect. In addition to the above-mentioned therapies in the chronic phase, rehabilitation treatments that do not increase pain should be emphasized, mainly to restore the movement function of the shoulder joint on three axes. For those who do not respond to conservative treatment, surgical treatment can be considered, including bursal resection, sacral calcification of supraspinatus tendon, acromion, and coracoid ligament resection.