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OSTEOSYNTHESIS OF THE PROXIMAL HUMERUS FRACTURES WITH A NEW LOCKED PLATE.

7th Congress of the European Federation of National Associations of Orthopaedics and Traumatology, Lisbon - 4-7 June, 2005



Abstract

Aim: The operative management of proximal humerus fractures is still viewed as an unsolved question.

Surgical treatment aims at restoring anatomical elements to a condition stable enough, to allow early mobilization to avoid secondary displacement. The blood supply of the humeral head should not be damaged, so the risk of avascular necrosis will be minimal.

This work offers a new surgical technique that dramatically reduces the need for dissection of soft tissues while using a new locked plate.

Material and Method: This prospective study was carried out between August 2002 and March 2004. 47 fractures of the humerus proximal were operated on 47 patients aged 63 as an average. There were 9 four part fractures, 18 three part and 17 two part fractures.

The two arms of this Y shaped plate embrace the humeral head. The anterior arm overbridges the biceps longus tendon and fixes the lesser tuberosity, with a locked screw in the head. The posterior arm fixes the greater tuberosity with an another locked screw. These two screws cross each other at nearly right angle thus giving optimal fixation in the head.

Results: Fourty four patients (44 shoulders) were later re-examined with 10,3 months mean delay. Re-education was made immediate for 85% of the cases. The final evaluation was made with the functional Constant score and X ray control.

The main complications were 3 algodystrophies, 1 hematoma, 4 failures of fixation, 2 nonunions and only one necrosis.

Conclusion: This first clinical experience with this new implant is stimulating, since it provides a reliable fixation, even into the osteopenic bone.

Theses abstracts were prepared by Professor Roger Lemaire. Correspondence should be addressed to EFORT Central Office, Freihofstrasse 22, CH-8700 Küsnacht, Switzerland.