An immunocompromised patient with a history of multiple hip implant revisions extended courses of empiric antibiotic treatment, and a retained metallic rod in the femoral medullary canal was transferred for diagnostic studies and treatment. A high suspicion of fungal infection and utilization of extended and specific fungal cultures were the diagnostic keys for infection with Trichosporon inkin. The treatment consisted in a debridement surgery with the use of a functional spacer with cement supplemented with voriconazole and vancomycin plus a 6-month systemic treatment with voriconazole. After 2 years of follow-up, the patient is free of symptoms.
Charcot neuroarthropathy (CN) is considered a major complication in diabetes mellitus (DM), and it is estimated that 1% of diabetic patients may develop this complication. Simultaneous kidney–pancreas transplantation (SKPT) is one of the most effective therapies for patients with type 1 DM and end-stage diabetic nephropathy. Some cases with a Charcot-modified clinical presentation during the postoperative convalescence period after SKPT have been described. The clinical presentation may condition severe destructive lesions, and good practices include systematic follow-up. Based on the cases described, SKPT is one more entity that might lead to CN ‘foot-at-risk’. The aim of this article is to describe two cases of neuropathic arthropathy with rapid progression in the short term after SKPT.
Introduction: Historically the removal of fractured stems was associated with complex revision and loss of bone stock. This study describes a minimally invasive procedure for extraction of the distal part of a broken cemented stem that does not compromise the bone stock and results with the cement-in-cement reconstruction technique. Materials and method: 7 patients with an average age of 74 years who underwent total hip replacement (THR) revision for fracture of femoral stems were included. The average follow-up was 8.7 years. For the removal of the distal fragment of the broken stem, a set of instruments have been manufactured using a coupling through the wrought of a thread over the fractured face of the stem. 6 cases were reconstructed using a cement-in-cement technique. In 1 case an extended trochanteric osteotomy was required. Results: There were no complications associated with the surgical technique. Early rehabilitation and standing were achieved in all patients at 48 hours postoperatively. No patient required a blood transfusion. No clinical or radiological loosening was detected at final follow-up. Conclusions: Different methods have been described for the extraction of distal fragments of a broken femoral stem. The majority include the use of femoral osteotomies, bone windows and knee arthrotomies. These techniques are associated with bone loss and bleeding. The advantages of the method described are, its low complexity, low-cost, accelerated functional recovery and the preservation of bone stock with the possibility of performing cement-in-cement reconstruction techniques.
ObjectivesStudies reporting specifically on squeaking in total hip arthroplasty have focused on cementless, and not on hybrid, fixation. We hypothesised that the cement mantle of the femur might have a damping effect on the sound transmitted through the metal stem. The objective of this study was to test the effect of cement on sound propagation along different stem designs and under different fixation conditions.MethodsAn in vitro model for sound detection, composed of a mechanical suspension structure and a sound-registering electronic assembly, was designed. A pulse of sound in the audible range was propagated along bare stems and stems implanted in cadaveric bone femurs with and without cement. Two stems of different alloy and geometry were compared.ResultsThe magnitudes of the maximum amplitudes of the bare stem were in the range of 10.8 V to 11.8 V, whereas the amplitudes for the same stems with a cement mantle in a cadaveric bone decreased to 0.3 V to 0.7 V, implying a pulse-attenuation efficiency of greater than 97%. The same magnitude is close to 40% when the comparison is made against stems implanted in cadaveric bone femurs without cement.ConclusionThe in vitro model presented here has shown that the cement had a remarkable effect on sound attenuation and a strong energy absorption in cement mantle and bone. The visco-elastic properties of cement can contribute to the dissipation of vibro-acoustic energy, thus preventing hip prostheses from squeaking. This could explain, at least in part, the lack of reports of squeaking when hybrid fixation is used.Cite this article: F. J. Burgo, D. E. Mengelle, A. Ozols, C. Fernandez, C. M. Autorino. The damping effect of cement as a potential mitigation factor of squeaking in ceramic-on-ceramic total hip arthroplasty. Bone Joint Res 2016;5:531–537. DOI: 10.1302/2046-3758.511.BJR-2016-0058.R1.
Rev Asoc Argent Ortop Traumatol 150 ResumenSe realizó encuesta a 299 residentes de Ortopedia y Traumatología sobre los aspectos del ingreso, las actividades y las preferencias durante ese período formativo de posgrado. Durante el Congreso anual de la especialidad en 2015, se entregó un formulario a los residentes de Residencias acreditadas por la Asociación Argentina de Ortopedia y Traumatología. El 39,3% de las Residencias era de la Provincia de Buenos Aires; el 25%, de la Ciudad Autónoma de Buenos Aires y el 34,88%, del resto de las provincias. El 71,4% eran estatales y el 26,9%, privadas. El 80,9% de las Residencias tenían una duración de 4 años. El 55% de los médicos rindió examen una sola vez. Los motivos de elección fueron que la práctica quirúrgica era la más importante (70%). El 53% se sentía satisfecho con la Residencia, la poca satisfacción obedece a las fallas estructurales (58%), la sobrecarga laboral (47%) y el poco desarrollo académico (41%). Las Residencias estaban completas en el 55% de los casos; las Residencias incompletas se debían a renuncias (56%) y a la falta de postulantes (49%). El 94% de los programas de Residencia tenía incorporado el Curso Bianual de la Asociación Argentina de Ortopedia y Traumatología. Estos datos nos muestran el estado actual de la Residencia en nuestra especialidad, pero son parciales, al no contar con datos de las Residencias no acreditadas. En 2016, se efectuó una nueva encuesta, cuyos resultados están en proceso de análisis.Palabras clave: Ortopedia; Traumatología; Residencia; encuesta. Orthopedic Residency survey regarding several aspects of the program AbstractA survey was performed with 299 orthopedics residents to obtain data about entrance examination, their activities and preferences during this post-graduate period. During the Congreso de Ortopedia y Traumatología de 2015, residents belonging to Residencies approved by Asociación Argentina de Ortopedia y Traumatología received a survey form. Thirtynine percent of Residencies belongs to the province of Buenos Aires, 25% to Ciudad Autónoma de Buenos Aires, and 34.88% to the rest of the country. Private institutions run almost 26.9% of Residencies while 71.4% belongs to the public area. Almost 81% of Residencies have a 4-year-duration. Fifty-five percent of the applicants went through only one examination. Choice was based on the intense surgical practice in the 70%. Fifty-three percent felt satisfied with the accomplishment of the Residency program. Reasons for dissatisfaction were structural problems (58%), work overload
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