Table 1_Biomechanical evaluation and finite element analysis of coracoclavicular ligament reconstruction using a modified double-pulley technique.xlsx

The ultimate failure load was significantly higher in the modified DP group than in the PTP group (367.07 ± 17.24 N vs. 285.70 ± 38.48 N, p < 0.01). Failure occurred through bilateral anchor pullout in the modified DP group but unilateral anchor pullout in the PTP group. Under the specified mesh and modeling conditions, the modified DP model showed lower computed peak stresses in the suture (196.01 MPa vs. 287.72 MPa), anchor (196.01 MPa vs. 274.82 MPa), and clavicle (26.54 MPa vs. 32.99 MPa), as well as lower distal clavicular displacement (0.23552 mm vs. 0.24565 mm), than the PTP model.</p>Conclusion<p>The modified DP technique provided greater initial fixation strength and lower cyclic displacement than the conventional PTP method under the present synthetic-model testing conditions.

The finite element findings provided exploratory, model-dependent mechanistic support for the observed biomechanical differences.</p>