Oral and Poster Presentations / Journal of Biomechanics 43S1 (2010) S23-S74 S37 cannot be achieved, a resection of the radial head would be the treatment of choice, eventually associated to an arthroplasty [3,4]. The arthroscopic approach to the elbow has become a more common procedure over the past years. Purpose of this paper is to presents the technique for the arthroscopic reduction and screw fixation of acute fractures of the radial head. The described procedure was performed in 11 patients whose fractures were classified according to Mason as follows: 7 type II-minimal displacement with angulation or impression (63.6%), 2 type III-comminuted fracture with dislocation (18.2%) and 2 type IV-radial head fracture with dislocation of elbow (18.2%) [5,6]. The injury-to-surgery interval never exceeded 48 hours. Clinical outcome and X-rays control were obtained in all cases at a mean follow-up of 12 months (range, 6 to 18 months). Preliminary results are described according to the Mayo score as excellent in 8 cases (72.7%) and good in 3 cases (27.3%) [7]. All the patients went back to pre-operative working or sports activities at a mean distance from surgery of 3.5 months (range, 1 to 6 months). Accordingly to literature, elbow arthroscopy has complication rates, which significantly vary in different hand [8]. No infective or neuro-vascular complications were observed in the presented series by the time of the last follow-up assessment. Thus, it is possible to say that the arthroscopic treatment of radial head fractures is, if appropriately performed, a safe procedure. Remarkably, this technique profits all the advantages of arthroscopic surgery as the reduced infection rate, the cosmetic aspect and the limited exposition of the patient and the whole surgical team to x-rays [9]. Particularly, it allows a more precise assessment of the eventually associated lesions, that not infrequently are misdiagnosed and a better understanding of the morphology of the fracture lines and fragments as well as chondral lesions whose severity may affect the outcome of the reconstruction of the radial head [10].