Abstract
The advantages of reverse prostheses are well established today. However, even though the broad outlines of the biomechanical concept remain valid, the appearance of a subglenoid notch and reduced rotator tone remain serious concerns for both the longevity of the implant and the patients’ function. The combination of a 135° cut and an eccentric glenoid sphere is one of the biomechanical solutions whose efficacy has been demonstrated in vitro. The design of the SCULTRA II implant combines these two modifications. A more vertical cut results in lateralization of the humerus which improves the tone of the rotators and the dynamic stability of the implant. Preserving effective rotators is also a considerable asset in improving daily living activities. In combination with eccentricity of the glenoid sphere, it also limits the appearance of a glenoid notch which could be responsible for loosening in the midterm to long term. The promising midterm clinical and radiological results regarding the preservation of rotators and the very low rate of notch appearance encourage us to continue the development of this implant by retaining these biomechanical precepts.
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Gravier, R., Simonet, JY. (2016). Euros Scultra II Reverse. In: Frankle, M., Marberry, S., Pupello, D. (eds) Reverse Shoulder Arthroplasty. Springer, Cham. https://doi.org/10.1007/978-3-319-20840-4_35
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DOI: https://doi.org/10.1007/978-3-319-20840-4_35
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