ANDREI SCRIPCARU, GRIGORE BEREA, ELENA CARMEN COTRUTZ, CRISTINEL IONEL STAN, BOGDAN PUHA HEMIARTHROPLASTY IN COMPLEX PROXIMAL HUMERAL FRACTURES IS UNCEMENTED METHAPHYSEAL CORUNDUM BLASTED TITANIUM HUMERAL STEM AN EFFICENT ALTERNATIVE? The aim of this experimental study is to reveal the design and characteristics of unipolar shoulder prosthesis type Arrow (Groupe FH®, France) as well as to evaluate the outcome of the proximal humerus fracture treated with this implant. 8 patients with a mean age of 62.5 years were operated with immediate passive rehabilitation and active exercises initiated around day 45. All patients had good results with minimal pain, a mean Constant - Murley score of 74 and an acceptable shoulder amplitude. The clinical success was assured by the anatomic union of the tuberosities around the implant. The Arrow metaphyseal corundum blasted humeral titanium stem assures a perfect osseointegration with optimal stability and is an efficient alternative for shoulder hemiarthroplasty.