Fig. 3

The surgical steps for MSB Latarjet procedure. a The glenoid bone defect was exposed. A marker was made on the anterior glenoid edge at half past 3 o’clock for location by the radiofrequency. b Debridement was performed on the glenoid and the switching stick was used to locate the accurate position for en-face graft fixation. c A tunnel with a diameter of 4.5 mm was drilled into the glenoid at the pre-prepared location with the guidance of custom-made guiding instrument. d The axillary nerve was exposed in case of injury. e High-strength sutures in the proximal tunnel of the bone block were passed into the tunnel of the glenoid. Then the coracoid block was pulled into the shoulder joint using the three sutures and firmly adhered to the glenoid. f The other suture in the distal tunnel was fixed together with a knotless anchor to the glenoid at half past 3 o’clock to prevent coracoid block rotation. g The suture button’s position was adjusted to prevent itself from the impingement of the humeral head. h The en-face view of the graft position from the CT scan at postoperative day 1