Orthop Traumatol Sur
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Orthop Traumatol Sur · Feb 2014
EOS analysis of lower extremity segmental torsion in children and young adults.
Lower limb torsion varies substantially among healthy children during growth. Values reported in the literature to date have been obtained using semi-quantitative clinical or 2D measurement methods. Quantitative 3D measurement would help determine the physiological range of lower limb torsion. Low-dose stereoradiography with 3D reconstruction provides a good alternative. Its use increases in pediatrics because of radiation minimization. Previous studies have shown accurate and reproducible results of lower limbs reconstruction in adults and children but the torsional parameters haven't been measured yet. The present study reports the values of lower limb segmental torsion and its course during growth in a cohort of healthy children and young adults using the EOS low-dose biplanar X-ray. ⋯ Level IV.
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Orthop Traumatol Sur · Feb 2014
Grammont reversed prosthesis for acute complex fracture of the proximal humerus in an elderly population with 5 to 12 years follow-up.
The aim of this retrospective study was to analyze outcome in 23 cases of Delta III reverse ball-and-socket total shoulder prosthesis implantation for acute complex fractures of the proximal humerus in an elderly population with poor bone quality. In this type of population, this procedure could respond to the difficulties of a reliable and efficient re-fixation of the tubercles. ⋯ For acute complex fractures of the proximal humerus in elderly subjects with poor bone quality, when effective and reliable re-fixation of the tubercles is difficult or impossible, the reverse ball-and-socket shoulder prosthesis is a possible alternative providing good functional outcome except for rotations, but with the risk of inferior scapular notching. Although not problematic in the medium term, these notches may contribute to glenoid loosening with bone loss in the long term. Nevertheless, this procedure seems to improve the status of patients with such fractures.
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Orthop Traumatol Sur · Feb 2014
Injury to the axillary nerve after reverse shoulder arthroplasty: an anatomical study.
Subclinical neurological lesions after reverse shoulder arthroplasty are frequent, mainly those involving the axillary nerve. One of the major reported risk factors is postoperative lengthening of the arm. The purpose of this study was to evaluate the anatomical relationship between the axillary nerve and prosthetic components after reverse shoulder arthroplasty. The study hypothesis was that inferior overhang of the glenosphere relative to glenoid could put this nerve at risk. ⋯ Basic science study, cadaver study.
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Orthop Traumatol Sur · Dec 2013
High rate of fracture in the cementless modular Extrême™ (Mark I) femoral prosthesis in revision total hip arthroplasty: 33 cases at more than 5 years' follow-up.
The modular concept has been recommended in femoral revision surgery with extensive bone loss, but entails mechanical complications: disassembly and fracture. The present retrospective study assessed the Mark I Extrême™ modular prosthesis at a minimum 5 years' follow-up. ⋯ In other series for the same type of implant, the rates of fracture (always metaphyseal-diaphyseal) were much lower: 0.8-3.8%. This stem ensures diaphyseal fixation in case of extensive bone loss, but incurs excessive risk of disassembly and fracture.