Biomechanics of a novel technique for suprapectoral intraosseous biceps tenodesis

Journal of Shoulder and Elbow Surgery
Nels SampatacosHeath B Henninger

Abstract

The Caspari-Weber (C.W.) tenodesis is a standard miniopen intraosseous technique to fix the long head of the biceps tendon. The suprapectoral intraosseous biceps tenodesis (SPIBiT) is a novel arthroscopic, intraosseous, tendon-sparing alternative using a cortical button. No biomechanical data exist comparing the time-zero performance of the SPIBiT and C.W. constructs. Nine pairs of human cadaver shoulders were tested. The SPIBiT used a finger-trap suture pattern holding the tendon inside a humeral tunnel above the pectoralis tendon, anchored with a cortical button on the anterior humerus distal to the bicipital groove. The subpectoral C.W. used a Krackow suture technique. Specimens underwent 500 cycles of uniaxial loading, followed by ultimate failure testing. The SPIBiT was placed in 5 left and 4 right humeri (5 female, 4 male; 59 ± 6 years). The C.W. was initially stiffer (P = .003), whereas the SPIBiT exhibited higher energy dissipation (hysteresis; P = .006). Metrics decreased for both constructs over 500 cycles (P ≤ .050). Constructs failed through suture bunching and tendon tearing within the main suture bundle. The SPIBiT exhibited a novel failure in 2 specimens, with the cortical button pulling distally and suture cutti...Continue Reading

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Citations

Aug 9, 2016·Archives of Orthopaedic and Trauma Surgery·Lawrence CamardaMichele D'Arienzo
Jun 30, 2019·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Sebastian MüllerClaudio Rosso

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