Sulcus sign of the shoulder :
- It is a orthopedic evaluation test which is used to check the glenohumeral instability to shoulder.
- It is applied by to therapist for examine to instability of shoulder .
- With to arm straight & relaxed to side of to patient & elbow is grasp & apply to traction into inferior direction.
- The excessive inferior translation which is do the depression occurs to below the acromion.
Purpose of to sulcus sign :
- This test is used to assess the glenohumeral joint [ GH ] for to inferior instability, due to laxity of to superior glenohumeral ligament & coracohumeral ligament.
Technique of to sulcus sign :
- Starting position for test is standing .
- Into standing position with arm by to side & shoulder muscles relaxed .
- Then examiner grasps to patient ‘s forearm below to elbow & pulls the arm distally .
What is interpretation of to sulcus sign
- This test is considered to positive when to sulcus sign is seen when to examiner is apply to downward force .
- Sulcus sign means a depression which is greater than to finger breadth between to lateral acromion & to head of humerus.
- This sulcus sign is considered to indicate inferior instability & glenohumeral laxity but it is only be considered to positive for instability if to patient is symptomatic .
- Bilateral sulcus sign is not as clinically significant as unilateral laxity on to affected side .
- Sulcus sign with a feeling of sublaxation is also clinically significant .
Grading for to sulcus sign :
- This sulcus sign is graded by to measuring form to inferior margin of to acromin to humeral head of shoulder joint.
| Grading of sulcus | Implies of distance |
| +1 | Less than 1 cm |
| +2 | 1 to 2 cm |
| +3 | More than 2 cm |
- If to humeral head displacement is more than to 2 cm form the acromin is reported to be indicative of a high degree of glenohumeral laxity .
Some other things of sulcus sign
- The best position to test for inferior instability is at 20 ‘ to 50 ‘ of abduction with natural rotation .
- Also rotation is causes to capsule to tighten anteriorly means lateral rotation or posteriorly means medial rotation so that sulcus distance is decrease .
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