Comparison of Short-Term Clinical Outcomes of Hook Plate and Continuous Loop Double Endobutton Fixations in Acute Acromioclavicular Joint Dislocation

This study was conducted to evaluate the clinical outcomes of the acromioclavicular joint (ACJ)fixation with hook plate (HP) and continuous loop double endobutton fixation (CLDE) in the treatment of acute ACJdislocation. This retrospective study was conducted on eight patients with HP and nine patients with CLDE fixations foracute ACJ dislocations. The subjects were evaluated by various criteria, including disabilities of the Arm, Shoulder,and Hand (DASH), American Shoulder and Elbow Surgeons Standardized Shoulder Assessment (ASES), Universityof California, Los Angeles (UCLA) shoulder rating scale, Shoulder Constant score, Simple Shoulder Test (SST), andcoracoclavicular (CC) distance. The differences between the mean scores of the visual analog scale for pain, DASH, ASES, UCLAshoulder rating scale, and Shoulder Constant, and SST were statistically significant in favor of the CLDE group.Mean difference of CC distance was 8.6±0.9 mm in the HP group; however, it was 11.6±1.2 mm in the CLDE group.The operation time was shorter in the HP fixation, compared to that in the CLDE fixation (51±13.3 versus 105±9.7min; PHP group. The CLDE fixation was reported with better clinical outcomes than HP fixation; however, it was a technicallydemanding procedure. The HP maintained the CC distance better than CLDE with a technically easy application. TheHP requires a second surgery for the removal and development of subacromial erosion and osteoarthritis of the ACJthat can be regarded as major concerns.Level of evidence: III