Levon Doursounian1, Anthony Le Sant2, Raphael Mauprivez3, Anne Miquel4, Violaine Beauthier-Landauer3. 1. Department of Orthopaedic Surgery and Traumatology, Saint Antoine Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France. levon.doursounian@wanadoo.fr. 2. Department of Orthopaedic Surgery and Traumatology, Morlaix Hospital, Morlaix, France. 3. Department of Orthopaedic Surgery and Traumatology, Saint Antoine Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France. 4. Department of Radiology, Saint Antoine Hospital, Assistance Publique-Hôpitaux de Paris, Paris, France.
Abstract
PURPOSE: Reduction and fixation of proximal humerus fracture (PHF) by intra-focal distraction with a cemented device is seldom used. A cementless stem called JUST was developed to simplify and standardise reduction and fixation of three- or four-part fractures (3-/4-PFs). This study is designed to evaluate the performances of this device. In addition, we compared the results to those of a previous study based on cemented stems. METHOD: Twenty-five patients underwent surgery between 2009 and 2011: ten 3-PFs and 15 4-PFs, with a median age of 65.5 and 71 years, respectively. The reduction and fixation device comprises a staple placed in the humeral head and a cementless stem impacted in the diaphysis that works like a jack. Median follow-up was 28 months. RESULTS: For the ten 3-PFs, the median raw and weighted Constant score were 66.5 and 86, respectively. Only one case presented with secondary displacement. All fractures healed and there was only one case of avascular necrosis. For the 15 4-PFs, the median raw and weighted Constant score were 64 and 76, respectively. Only one case of secondary cephalic displacement was observed and no cases of tuberosity displacement were observed. All fractures healed except for one case of pseudarthrosis of the lesser tuberosity. Five cases of avascular necrosis were observed. CONCLUSIONS: This device resolves the mechanical difficulties relating to fixation of 3- and 4-PFs by providing stable fixation but does not prevent the risk of avascular necrosis. The cementless stem is more convenient but does not yield better results than the cemented stem.
PURPOSE: Reduction and fixation of proximal humerus fracture (PHF) by intra-focal distraction with a cemented device is seldom used. A cementless stem called JUST was developed to simplify and standardise reduction and fixation of three- or four-part fractures (3-/4-PFs). This study is designed to evaluate the performances of this device. In addition, we compared the results to those of a previous study based on cemented stems. METHOD: Twenty-five patients underwent surgery between 2009 and 2011: ten 3-PFs and 15 4-PFs, with a median age of 65.5 and 71 years, respectively. The reduction and fixation device comprises a staple placed in the humeral head and a cementless stem impacted in the diaphysis that works like a jack. Median follow-up was 28 months. RESULTS: For the ten 3-PFs, the median raw and weighted Constant score were 66.5 and 86, respectively. Only one case presented with secondary displacement. All fractures healed and there was only one case of avascular necrosis. For the 15 4-PFs, the median raw and weighted Constant score were 64 and 76, respectively. Only one case of secondary cephalic displacement was observed and no cases of tuberosity displacement were observed. All fractures healed except for one case of pseudarthrosis of the lesser tuberosity. Five cases of avascular necrosis were observed. CONCLUSIONS: This device resolves the mechanical difficulties relating to fixation of 3- and 4-PFs by providing stable fixation but does not prevent the risk of avascular necrosis. The cementless stem is more convenient but does not yield better results than the cemented stem.
Authors: Michael J Gardner; Yoram Weil; Joseph U Barker; Bryan T Kelly; David L Helfet; Dean G Lorich Journal: J Orthop Trauma Date: 2007-03 Impact factor: 2.512
Authors: N Südkamp; J Bayer; P Hepp; C Voigt; H Oestern; M Kääb; C Luo; M Plecko; K Wendt; W Köstler; G Konrad Journal: J Bone Joint Surg Am Date: 2009-06 Impact factor: 5.284