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The patient is positioned in the lateral decubitus position. (A) Intra-articular arthroscopic image of a left shoulder from the posterior viewing portal with a 30° arthroscope. Two suture strands are threaded through the loop inferior to the tendon, released, and grasped out of the capsule through the anterior working portal to construct a lark’s head knot. (B) An illustration summarizes the corresponding step. (BT, biceps tendon; G, glenoid; HH, humeral head.).
