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Based on the results of this anatomic study which have demonstrated that anterior cortex and anterior trabecular bone of the medial and distal regions of the bicipital tuberosity are thicker than proximal part, we postulate that these segments could give better pulling out resistance to monocortical implants. Our findings suggest that the strongest parts of the bicipital tuberosity are the proximal and medial parts of the posterior cortex. We can afford them drilling across the radius using a bicortical implant in the proximal and medial section of the radial tuberosity. Furthermore, we suggest that an increased margin of safety could be achieved to prevent injury to the posterior interosseous nerve, drilling the cortical hole in the proximal part of the radial tuberosity without losing resistance properties.

We compared the biomechanical properties of the Teo intraosseous suture technique with the modified Bunnell pullout technique in a cadaver model after a tendon to bone repair. Thirty-six fresh-frozen cadaveric fingers were assigned randomly to three groups (Teo, Bunnell and control groups). They were loaded cyclically from 2 to 15 N at 25 mm/min, for 500 cycles. Gap formation at the repair site was assessed every 100 cycles and then specimens were tested to failure. The Teo group had an approximately 30% smaller gap every 100 cycles and needed 30% more energy to obtain a 2 mm gap than the modified Bunnell group. Displacement after 500 cyclic loads was significantly lower in the Teo group than in the Bunnell group. For the failure of the Teo suture, it was necessary to apply 31% more load than the Bunnell technique.

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