Midterm Follow-up of Divergent Peg Glenoid Components in Total Shoulder Arthroplasty.

Glenoid component aseptic loosening is the most common source of total shoulder arthroplasty (TSA) revision. Divergent pegged glenoids may improve fixation. Thirty-four patients underwent divergent peg TSA. Data were reviewed for component loosening. Failure was defined as the need for revision after loosening. The last postoperative radiographs were graded on a Lazarus glenoid lucency scale. Mean follow-up was 5.6 years ± 2.44 (range, 2-10 years). Radiolucency around one or fewer pegs was noted in 14/20 patients. Six glenoids had complete radiolucency around two pegs; one shoulder had gross loosening. No secondary surgery was performed. Improvements were seen in active elevation and internal rotation. The mean Shoulder Pain and Disability Index (SPADI) score decreased by 48.1 points (p = .039). Shoulder elevation, internal rotation, and SPADI scores significantly improved at final follow-up. No patients underwent revision for glenoid loosening. There were, however, a significant number of patients with radiolucency around two pegs. (Journal of Surgical Orthopaedic Advances 27(1):6-9, 2018).

Comparison of cannulated screws with FiberWire or stainless steel wire for patella fracture fixation: A pilot study.

PURPOSE: This pilot study tested whether FiberWire provides similar protection to steel wire against repair displacement in patella fractures. METHODS: Thirteen cadaver knees were cyclically loaded with 10 cycles (0-90° flexion) and fracture displacement was recorded. Fixation methods were also tested in load to failure (>3 mm displacement). RESULTS: There was no difference between wire types in fracture displacement (1.4 mm ± 0.33 mm vs 1.2 mm ± 0.34 mm, respectively; p = 0.418) or in the load to failure (714.7 N ± 110.9 N vs 744.5 N ± 92.8 N, respectively; p = 0.360). CONCLUSION: FiberWire provides similar protection to steel wire against repair displacement after fixation of patellar fractures.