Poster 35: Results from a Randomized Trial: Arthroscopic Anatomic Glenoid Reconstruction Demonstrates Low Recurrence and High Safety in Shoulder Instability Compared to Bankart Repair
Bibliographic record
Abstract
Objectives: Arthroscopic anatomic glenoid reconstruction (AAGR) is an increasingly popular treatment approach for shoulder instability. Promising retrospective results demonstrate AAGR has a similar safety profile to a Bankart repair, while demonstrating low recurrence rates similar to a Latarjet. Although Bankart repair is the traditional treatment for subcritical bone loss, there are ongoing debates in the literature surrounding the best procedure to achieve optimal patient outcomes. In this single center, double blinded, randomized controlled trial, we aimed to compare the safety profile of arthroscopic Bankart repair vs. AAGR as well as explore graft remodeling in the AAGR population. Methods: Patients aged between 16 to 60 who experienced recurrent anterior shoulder instability with subcritical bone loss were considered for enrollment. Patients were included if they experienced 2 or more anterior shoulder dislocations with subcritical glenoid bone loss <20%. Glenoid bone loss was determined from preoperative CT scan. Patients were randomized into two groups, Bankart or AAGR, preoperatively and were analyzed if they had a minimum of 12-month follow up. Safety profiles were evaluated for intraoperative, perioperative and postoperative complications. CT imaging was conducted after 6 months postoperatively for individuals randomized to AAGR to assess graft healing and remodeling. Graft resorption was assessed using the modified Zhu classification. Results: This study included 80 participants who underwent arthroscopic Bankart repair and 73 participants who underwent arthroscopic AAGR. Similar demographics were demonstrated with no differences in age, BMI, clinical follow-up time, and preoperative glenoid bone loss between groups. Neither group reported intra-operative or perioperative complications. Fifteen percent of participants who received a Bankart repair experienced a re-dislocation whereas no AAGR participants experienced re-dislocation (p>0.01). One individual (1.4%) in the AAGR group required reoperation for hardware complications (p>0.05). In the AAGR group, 100% of patients demonstrated graft healing with 97% of grafts appropriately positioned in the ideal 3-5 o’clock location in the sagittal plane. Eighty-eight percent of participants experienced less than 50% resorption with allograft resorption occurring equally from the superior to inferior portion of the graft. Conclusions: AAGR demonstrates an excellent safety profile comparable to Bankart repair with no associated incidence of recurrent dislocation. AAGR graft remodelling appears to reform the native glenoid architecture. In conclusion AAGR should be considered as a surgical option for patients with subcritical bone loss to reduce instances of recurrent instability.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.003 | 0.006 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.003 | 0.004 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.001 | 0.001 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.002 | 0.002 |
| Insufficient payload (model declined to judge) | 0.017 | 0.002 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".