Superior labral anterior to posterior (SLAP) injury is a lesion of the upper lip of the shoulder joint that often causes pain or even instability in the shoulder joint during specific movements. In 1990, Snyder divided the upper glenoid lip injuries into four types based on the injuries described by Andrews and named them SLAP injuries. The most common type II injury was the avulsion of the upper glenoid lip and the long head tendon of the biceps muscle from the glenoid pelvis. In 1995, Maffet et al. added three SLAP injuries to the Snyder classification, totaling seven types of injuries. Bankart injury is an avulsion injury in the anterior and inferior glenohumeral ligament complex of the shoulder glenoid and labial. According to the classification of Maffet, type V SLAP injury refers to the continued upward extension of the Bankart injury and the separation of the LHB stop, that is, type II SLAP injury combined with Bankart injury. The incidence of type V SLAP injuries is about 4%-15% of all SLAP injuries, and Gartsman believes that the incidence of type V SLAP injuries in chronic forward shoulder instability is about 57%. Compared with Type II SLAP injury and Bankart injury surgery, Type V SLAP injury surgery requires the management of both anterior labial and upper labial biceps tendon complex tears, more extensive tear repair and insertion of more anchors, more line crosses, and management of multiple sutures, and requires more technical requirements. In addition, the implant site or the crossing site of the anchor is not appropriate, which may lead to too tight suture, leading to external rotation of the shoulder joint after surgery.

To investigate the surgical technique and clinical efficacy of arthroscopic suture anchor repair for type Ⅴ SLAP injury.

A total of 12 patients with type Ⅴ SLAP injury from January 2013 to June 2018 were retrospectively analyzed, and their labral injuries were repaired with suture anchor under arthroscopy. They were followed up for 1 year after surgery. The visual analogue scale, range of motion, Rowe score and ASES score were used to evaluate the surgical effect.

The VAS scores of 12 patients 6 months and 1 year after surgery were statistically different before surgery (P<0.05) . The ROM of external rotation 6 months after surgery was statistically different compared with the unaffected side (P<0.05) but not statistically significant compared with the unaffected side 1 year after surgery (P>0.05) . The scores of Rowe and ASES before surgery were statistically different from 1 year after surgery (P<0.05) .

Arthroscopic suture anchor repair for type Ⅴ injury can attenuate shoulder pain and improve function with good clinical efficacy.