- Supraspinatus tendonitis
- Infraspinatus tendonitis
- 726.10 Disorders of bursae and tendons in shoulder region,
- 840.3 Infraspinatus (muscle) (tendon) sprain
- 840.4 Rotator cuff (capsule) sprain
- 840.5 Subscapularis (muscle) sprain
- 840.6 Supraspinatus (muscle) (tendon) sprain
- S43.429A Sprain of unspecified rotator cuff capsule, initial
- S43.80XA Sprain of other specified parts of unspecified shoulder
girdle, initial encounter
- Inflammation, irritation, swelling of one or more of the
rotator cuff tendons
- Supraspinatus muscle
- Infraspinatus muscle
- Teres minor muscle
- Subscapularis muscle
- Occurs most often from repetitive motion injuries or impingement
syndrome but can occur with a sudden strain/stress to the
- Early stages: The tendon becomes swollen and red, and as the
tendonitis develops, the tendon sheath may thicken
- Late stages: Chronic inflammation may result in fraying of
the tendon (tendinosis) and could progress to rupture with long
- Shoulder pain and dysfunction due to compression and abrasion
of one or more of the rotator cuff tendons
- Impingement is the most commonly diagnosed shoulder problem
and likely has numerous potential mechanisms, which can impact both
treatment and prognosis.
- Multifactorial and thought to be related to intrinsic and/or extrinsic mechanisms.
- Extrinsic mechanisms (extratendinous, caused
by decreased sub-acromial space and subsequent micro-trauma with
- Mechanical wear under the coracoacromial arch
- Aberrant movement patterns due to rotator cuff and/or periscapular muscular dysfunction
- Capsular abnormalities
- Capsular tightness (particularly posterior capsule)
- Capsular laxity (poor humeral head dynamic control)
- Sub-optimal posture
- Overuse/repetitive motions occurring at more than 90 degrees of elevation
- Intrinsic factors (directly associated with the narrowing
of the sub-acromial space)
- Vascular supply/changes to the cuff
- Acromial morphology (structural variations)
- Type I (flat)
- Type II (curved)
- Type III hooked)
- Degenerative and/or structural changes
to the AC joint
- Other trophic changes in the coracoacromial arch or humeral
- Primary impingement is usually associated
with degenerative changes to any of the following tissues:
- Rotator cuff tendons
- Acromioclavicular (AC) joint
- Coracoacromial arch
- Secondary impingement is the result of muscle imbalances
and/or joint instability, which can result in altered dynamics
and subsequent secondary impingement.
- A third class of impingement, not subacromial in nature, is
referred to as internal impingement and occurs between the undersurface
(articular side) of the rotator cuff tendons and the posterior/superior
surface of the labrum in the position of abduction and external
rotation that occurs with throwing.
- Regardless of the specific classification, all types of impingement
are proposed to be mechanisms of rotator cuff and biceps tendinopathy.
- The rotator cuff stabilizes and steers the head of the
humerus in the glenoid of the scapular at the glenohumeral (GH)
- Rotator cuff and possibly the biceps are thought to compresses
the head of the humerus into the glenoid to ...
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