Fig. 12.1
The canula through anterior portal
Fig. 12.2
To establish the anterolateral superior portal. (a) a spine needle anterior to the supraspinatus tendon; (b) a switching stick through the anterolateral superior portal
Fig. 12.3
SLAP repair with suture anchor
In the view from the anterolateral superior portal, the detached labrum, especially the ALPSA lesion, can be easily recognized (Fig. 12.4a–c) and is released by an elevator through the anterior portal. It is mandatory to release scar tissue between torn labrum and scapular until the subscapularis muscle belly can be visualized (Fig. 12.5), then the labrum can be easily repositioned.
Fig. 12.4
ALPSA lesion. (a) the labrum in ALPSA lesion cannot be found from posterior view; (b) the labrum was found from anterolateral superior portal; (c) the labrum was released
Fig. 12.5
The subscapularis muscle belly can be observed following enough labrum release
The glenoid rim is debrided with a shaver and freshened with the rasp to create a bleeding bone surface for healing.
Usually, three to four anchors are used to repair the Bankart lesion and are inserted from inferior to superior through the anterior portal. The implant choice is made based on each surgeon’s preference and familiarity with any of the available 2.8- to 3.5-mm anchors.
For the first suture anchor at the 5:30 o’clock position, some authors recommend to create the deep anteroinferior portal through the lower third of the subscapularis.
The first suture anchor is implanted at the 5:30 o’clock position of the glenoid. From the anterior portal (Fig. 12.6), a suture passer is then used to pass a shuttling suture through the capsule, anterior bundle of the inferior glenohumeral ligament, and labrum about 6–7 mm inferior to the previously placed anchor, so that the whole capsulolabral complex including the aIGHL is incorporated. The goal is to get a healthy capsular bite, grabbing inferior to the anchor in an effort to shift the tissue superiorly, reducing capsular volume (Fig. 12.7).
Fig. 12.6
The first suture anchor was implanted at 5:30 o’clock
Fig. 12.7
Bankart repair with suture anchors
The sutures were shuttled and tied arthroscopically in a simple or mattress fashion. Afterward, other anchors are implanted sequentially to repair the labrum in the same manner. The capsulorrhaphy is routinely incorporated into labral repair in the recurrent cases.
- 4.
Remplissage technique [51]
The remplissage technique is used to address the engaging Hill-Sachs lesion. The goal of remplissage technique is to fix the conjoined infraspinatus tendon and posterior capsule to the Hill-Sachs lesion. The procedures of anchor implanting and suture passing must be completed before Bankart repair. Otherwise, the reduced capsular volume will compromise the visualization of Hill-Sachs lesion.
With viewing from anterolateral superior portal, the extent and location of the Hill- Sachs lesion is evaluated. The surface of the engaging Hill-Sachs lesion is gently freshened with a bur through the posterior portal (Fig. 12.8).
Fig. 12.8
Debridement of Hill-Sachs lesion
Usually, two anchors are employed in remplissage technique and are placed in the most distal and superior aspects of the Hill-Sachs lesion in sequence. These anchors are placed in the inferior medial and superior medial margins of the defect (Fig. 12.9)
Fig. 12.9
Two anchors were implanted inferior medial margin and superior medial margin of Hill-Sachs lesion respectively
Following the sutures of two anchors being retrieved from anterior portal, the cannula in posterior portal is withdrawn outside the posterior capsule and infraspinatus tendon into the subdeltoid space.
A penetrating grasper is used to pass through the infraspinatus tendon and posterior casule, to retrieve the sutures individually through the posterior cannula, so that finally mattress knots could be tied extraarticular, in the subdeltoid space. If the visualization of knot tying is necessary, the arthroscope can be switched to the subacromial space to view the corresponding suture threads being tied in a mattress suture (Fig. 12.10a, b)
Fig. 12.10
After remplissage technique. (a, b) the posterior capsule and posterior rotator cuff were filled into the Hill-Sachs lesion
Conclusion
Considering the high risk of failure of conservative management, the secondary lesions, and arthropathy following recurrent dislocation, surgical shoulder stabilization is recommended for traumatic anterior shoulder instability in the young athletes involved in shoulder demanding activities.
Bankart repair has satisfactory outcomes for the traumatic anterior shoulder instability with Bankart lesion, but without significant bone loss. If the engaging Hill-Sachs lesion is found at the same time, the additional remplissage technique will be a reliable supplemental procedure.
References
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McLaughlin HL, MacLellan DI. Recurrent anterior dislocation of the shoulder. II. A comparative study. J Trauma. 1967;7(2):191–201.PubMed
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Rowe CR. Acute and recurrent anterior dislocations of the shoulder. Orthop Clin North Am. 1980;11(2):253–70.PubMed
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Henry JH, Genung JA. Natural history of glenohumeral dislocation – revisited. Am J Sports Med. 1982;10(3):135–7.PubMed