Glenoid bone loss and patient history influence surgical decision-making for bony Bankart lesion: A mid-term follow-up retrospective study.

Background: To analyze how patient history, glenoid bone loss (GBL), and the size of the residual glenoid bone fragment (GBF) influence the choice between arthroscopic Bankart repair and open Latarjet procedure in patients with anteroinferior glenohumeral instability and bony Bankart lesions.

Methods: Review of 290 patients with bony Bankart lesions treated for anterior glenohumeral instability was conducted and patients were categorized into three groups based on GBL and GBF: Group A (GBL < 10% and GBF <10%), Group B (GBL ≥ 10% and GBF <10%), and Group C (GBL ≥10%, GBF ≥10%). Number of preoperative dislocations, time from the first instability, Western Ontario Shoulder Index (WOSI) scores, Hill-Sachs lesion (HSL) location (central or peripheral), HSL track status, and Glenoid Track Instability Management Score (GTIMS) were analyzed.

Stability mapping of bipartite tight-binding graphs with losses and gain: PTPT-symmetry and beyond.

We consider bipartite tight-binding graphs composed by N nodes split into two sets of equal size: one set containing nodes with on-site loss, the other set having nodes with on-site gain. The nodes are connected randomly with probability p. Specifically, we measure the connectivity between the two sets with the parameter α, which is the ratio of current adjacent pairs over the total number of possible adjacent pairs between the sets.