Ulnar-sided pain due to extensor carpi ulnaris tendon subluxation: A case report

Introduction. We present the case of a patient with extensor carpi ulnaris tendon subluxation who was first treated for distal radioulnar joint sprain. Case presentation. A 25-year-old Caucasian man was seen at our policlinic one month after he had fallen on his outstretched hand. A diagnosis of extensor carpi ulnaris subluxation was made clinically but we also had the magnetic resonance imaging scan of the patient's wrist which displayed an increased signal on T2-weighted images consistent with inflammation around the extensor carpi ulnaris tendon. The extensor carpi ulnaris tendon was found to be dislocating during supination and relocating during pronation. The sheath was reconstructed using extensor retinaculum due to attenuation of subsheath. Conclusion: There was no recurrent dislocation of the extensor carpi ulnaris tendon of the patient at his last follow up 12 months after the operation. © 2012 Cift et al.; licensee BioMed Central Ltd

Biomechanical comparison of plate-screw and screw fixation in medial tibial plateau fractures (Schatzker 4). A model study

WOS: 000277652300010PubMed: 20488145Introduction: The objective of this biomechanical study was to compare the respective efficiency of plate-screw fixation and screw fixation in an experimental model of a Schatzker type 4 fracture. Hypothesis: screw fixation and plate fixation have a similar load to failure. Materials and methods: This study compares the stability of Schatzker type 4 medial tibial plateau fractures fixed with either 36.5mm cancellous bone screw with a 16mm threaded segment or with six-holed buttress T-plate-screw system. A Schatzker type 4 fracture was modeled on an artificial bone model. In a first group of 10 fracture models, following the anatomical reduction, fractures were stabilized with screws with washers. In the second group, of 10 fracture models, fractures were stabilized with T-plate. After fixation ascending axial compression was applied on bone models (Instron machine). Results: Load bearing capacity was 1397.6 +/- 194.4 N in the Group 1 and 2153.2 +/- 204.4 N in the Group 2. The difference between the two groups was statistically significant (p < 0.001). Discussion: According to this result, experimental load bearing of bone models indicate that plate-screw fixation system has a significantly higher stabilization capacity than fixation with three screws alone. Our hypothesis was not confirmed. In order to maintain anatomical repositioning, plate-screw system is a more stable fixation method than the screw in medial tibial plateau fractures Schatzker 4 Level of evidence: 1. (C) 2010 Published by Elsevier Masson SAS

Étude comparative biomécanique de l'ostéosynthèse par plaque vissée versus vis dans les fractures du plateau tibial médial de type Schatzker 4

Introduction: The objective of this biomechanical study was to compare the respective efficiency of plate-screw fixation and screw fixation in an experimental model of a Schatzker type IV fracture. Hypothesis: Screw fixation and plate fixation have a similar load to failure. Materials and methods: This study compares the stability of Schatzker type IV medial tibial plateau fractures fixed with either three 6.5. mm cancellous bone screws with a 16. mm threaded segment or with six-holed buttress T plate-screw system. A Schatzker type IV fracture was modeled on an artificial bone model. In a first group of 10 fracture models, following the anatomical reduction, fractures were stabilized with screws with washers. In the second group of 10 fracture models, fractures were stabilized with T plate. After fixation, ascending axial compression was applied on bone models (Instron machine). Results: Load bearing capacity was 1397.6 ± 194.4 in group I and 2153.2 ± 204.4 in group II. The difference between two groups were statistically significant (p<0.001). Discussion: According to this result, experimental load bearing of bone models indicates that plate-screw fixation system has a significantly higher stabilization capacity than fixation with three screws alone. Our hypothesis was not confirmed. In order to maintain anatomical repositioning, the plate-screw system is a more stable fixation method than the screw in medial tibial plateau fractures of Schatzker type IV. © 2010 Elsevier Masson SAS