Introduction Shoulder replacement is a classical indication in 3 and 4 part humeral head fractures, but the results reported in literature are not so good like arthritis. This is for some aspects as healing of tuberosity, rotatory cuff repair and difficult in positioning of prosthesis for lack of landmarks. The aim of this study is to assess the overall outcome of 30 patients treated with shoulder prosthesis for proximal humeral fractures.

Methods Quality of life assessment, specific shoulder patients perspective and objective parameters were correlated with position of stem. Height and version of the stem, evaluated with CT scan as reported in Literature, were studied and correlated whether with the other side or with subjective and objective data.

Subjective data included SF-36, DASH, Simple shoulder test; active and passive ROM, muscles strength etc. represented objective data. A rigorous statistical analysis was performed.

Results No statistical significative correlation were detected between position and subjective outcome. Different data are found for objective data as ROM, that appears correlate with position of stem.

Conclusion No papers about these aspects of shoulder replacement exist in Literature.

The authors believe that better knowledge of correlation between outcome and technical aspects in shoulder replacement could be important to define surgical practice criteria.

Introduction MRI accuracy in detecting knee lesions is a discussed controversy. Not always different knee lesions, diagnosed by MRI are confirmed by arthroscopy. The aim of this study is to correlate the accuracy of history, physical examination and MRI in evaluating meniscal and ACL lesions.

Methods A prospective comparative study was performed to compare anamnestic and clinical data, MRI findings and arthroscopic findings to better understand the role of these methods and to assess if there are significative differences between various knee disorders. One hundred patients undergoing to arthroscopy for knee injuries were evaluated before surgery, registering anamnestic data, clinical examination and MRI findings. At the time of surgery every finding was registered and then compared with the previous acquired data.

Results The most accurate data for diagnosis appears from history and clinical examination. The study showed a statistically significative differences between the RMI and arthroscopic findings. Differences between radiologist were detected in MRI data.

Conclusion The results of such type of study, underlining the reliability and accuracy of patient’s history, clinical examination and MRI, comparing the different results among them and in various knee injuries. The accuracy of every test is the first step for an evidence based decision analysis process and represent a step forward an efficacious and economical pattern in diagnosis.