Compressed Biceps Autograft Augmentation of Arthroscopic Rotator Cuff Repair.

Rotator cuff repair failure rates continue to be a challenging problem. Various methods of biological and structural augmentation of the rotator cuff have been explored to improve tendon healing after repair. We describe a technique in which biceps tendon autograft is harvested after tenodesis.

Autograft Long Head Biceps Tendon Can Be Used as a Scaffold for Biologically Augmenting Rotator Cuff Repairs.

Purpose: We create a viable, mechanically expanded autograft long head biceps tendon (LHBT) scaffold for biologically augmenting the repair of torn rotator cuffs.

Methods: The proximal aspect of the tenotomized LHBTs was harvested from patients during rotator cuff repair surgery and was mechanically formed into porous scaffolds using a surgical graft expander. LHBT scaffolds were evaluated for change in area, tensile properties, and tenocyte viability before and after expansion.

A comparison of onlay versus inlay glenoid component loosening in total shoulder arthroplasty.

Background: Glenoid component loosening is common in total shoulder arthroplasty (TSA), often resulting from the mechanical interaction of glenohumeral components. This cadaveric study was performed to evaluate and to compare commercially available onlay and inlay glenoid prosthetic designs with respect to loading characteristics and loosening.

Methods: Sixteen prescreened cadaveric shoulders (8 matched pairs) underwent either onlay or inlay TSA.

Spatiotemporal induction of matrix metalloproteinase-9 transcription after discrete myocardial injury.

Radiofrequency (RF) ablation of the myocardium causes discrete sites of injury. RF scars can expand, altering the extracellular matrix (ECM) structure and the continuity of the electrical syncytium of the adjacent myocardium. Matrix metalloproteinases (MMPs), such as MMP-9, contribute to ECM remodeling.