推 akainorei:好像不是rotator cuff......07/29 11:04
恐怕要令你失望了, 就算名詞不同但傷勢和rotator cuff tears類似, 結果也差不了多少
Shoulder Capsule / Rotator Interval Capsule
‧tears of the rotator interval capsule:
- may mimic rotator cuff tears;
- impingment signs may be present along w/ biceps tendon tenderness;
- may allow extravasation of dye into subacromial space, as well as the
subscapularis fossa (w/ dye seen anterior to the subscapularis);
- leakage into the subscapularis fossa may require shoulder movement;
- in the study by Harryman et al, the authors report that sectioning of the
rotator interval capsule allowed 50% posterior translation and 100%
inferior translation;
Sprains and Strains, Rotator Cuff (Capsule)
Definition
--------------------------------------------------------------------------------
A sprain of the rotator cuff or shoulder capsule occurs when there is a
forceful injury to the ligaments that stabilize the shoulder joint
(glenohumeral joint). The stretching or partial tearing of these ligaments
causes the shoulder joint to become loose (lax) and can lead to complete
disruption or dislocation.
The glenohumeral joint is the most freely moving joint in the body. Two bones
come together at the shoulder: the ball, or humeral head, at the upper end of
the arm, and the socket, which is part of the shoulder blade (glenoid of the
scapula). Ligaments cross between these two bones and stabilize the
glenohumeral joint.
Sprains of the shoulder capsule are classified according to the amount of
damage to the ligaments and any resulting laxity of the joint. Mild
stretching without tearing of the ligaments is a grade I or first-degree
sprain. There may be some minimal instability of the joint at this point. In
a grade II or second-degree sprain, some fibers of the capsule tear causing
the head of the humerus to slip and almost dislocate (subluxation), creating
a feeling of instability.
Grade III, or third degree sprains, result in complete disruption of the
joint capsule and displacement of the humeral head out beyond the joint
(shoulder dislocation). The dislocation can be downward, upward, frontward,
or backward (inferior, superior, anterior, or posterior) or result in
multidirectional instability, which means the humeral head moves too far in
many directions. The most common direction for shoulder dislocation is
anterior, followed by posterior, and infrequently is multidirectional. The
grading of rotator cuff sprains is not an exact science but based on clinical
assessment and experience related to signs, symptoms or imaging studies.
Sprains with movement of the humeral head toward the front (anterior) are the
result of trauma and usually are caused by forced external rotation with the
elbow away from the body. This movement is similar to throwing. Acute
posterior sprains and dislocations are rare and most often result from a
direct blow to the shoulder or outstretched arm. Chronic sprains result when
supporting ligaments stretched from repeated injuries do not heal; they also
result from changes in the glenoid lip and humeral head when the bones slip
out of position.
Acute shoulder dislocations are a true emergency because of the possibility
of nerve damage while the bones are out of position. They require immediate
attention, either in a physician's office with x-ray capability, urgent care
units, or an emergency room.
Risk: Athletes, especially those who participate in contact sports such as
rugby, football, lacrosse, and ice hockey, are among those most likely to
sustain a shoulder sprain. Individuals who perform heavy overhead work or
heavy lifting are also more likely to experience one.
Incidence and Prevalence: Estimate suggest 3.7 million individuals in the US
visit their physicians each year for upper arm and shoulder sprains and
strains ("Common Shoulder Injuries").
※ 引述《subcrew02 ( 南 )》之銘言：
: Chien-Ming Wang needs season-ending shoulder surgery It’ll be tomorrow
: morning
: UPDATE, 10:49 p.m.: Wang needs a tear in his capsule repaired, apparently.
: The capsule is the soft-tissue membrane. Typically, the capsule is tightened
: in surgery.
: The Yankees either don’t know or aren’t saying how long Wang will be out.
: But it will be for the rest of this season and quite likely some of next
: season as well. This will be Wang’s second shoulder surgery in eight years.
: The surgery will be performed by Dr. James Andrews tomorrow morning.
: bye bye !!
: http://yankees.lhblogs.com/
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 140.130.161.89
※ 編輯: leddy 來自: 140.130.161.89 (07/29 11:29)
推 warchiefdodo:所以是非常不樂觀的意思?........ 07/29 11:30