Hipoparatiroidismo primario de presentación tardía asociado a patologías autoinmunes / Late onset primary hypoparathyroidism associated with autoimmune disorders

Se presenta una paciente que, en la sexta década de su vida, debuta con episodios de espasmo carpopedal espontáneo. Los valores bajos de calcemia (6,1 mg/dl) y de PTH (8 pg/ml) confirmaron el diagnóstico de hipoparatiroidismo. No había sido sometida a cirugías de cuello ni radioterapia. No existían antecedentes familiares vinculantes. Durante 11 años de seguimiento, la paciente presenta asociación con otras patologías que permiten sospechar la etiología autoinmune del hipoparatiroidismo: candidiasis de piel y uñas, hipotiroidismo por tiroiditis de Hashimoto, penfigoide y psoriasis. Finalmente fallece por una neumonía adquirida en la comunidad, complicada. (AU)

A patient who develops hypoparathyroidism during her sixth decade of life is reported. It was detected due to spontaneous carpopedal spasms. Low calcium (6.1 mg/dl) and PTH (8 pg/ml) levels confirmed the diagnosis. She had not undergone neck surgery or irradiation. There was no relevant family history. Throughout the 11 years follow up she presented association of other pathologies that allow the suspicion of autoimmune etiology of hypoparathyroidism: candidiasis of skin and nails, autoimmune thyroiditis, pemphigoid and psoriasis. She eventually died of complicated community-acquired pneumonia. (AU)

Cyclic load testing and ultimate failure strength of suture anchors in the acetabular rim.

PURPOSE: To determine the resistance to cyclic stress and load-to-failure strength of several suture anchors suitable for hip arthroscopy. METHODS: Ten polyetheretherketone (PEEK) PushLock, PEEK SutureTak, and Bio-SutureTak anchors (Arthrex, Naples, FL); Lupine Loop BR anchors (DePuy Mitek, Norwood, MA); Bio-Mini Revo anchors (ConMed Linvatec, Largo, FL); and BioRaptor 2.9 AB anchors (Smith & Nephew, Andover, MA) were inserted in rotation into different locations on the rim of 4 matched pairs of potted acetabula clamped to the base of a servohydraulic testing machine. The anchors' sutures were cyclically pulled in line with the insertion angle. Displacement at 100 and 500 cycles, yield load, ultimate failure load, and failure mode were recorded. Statistical analysis was performed. RESULTS: Most of the displacement observed during cyclic loading occurred in the first 100 cycles, except for the BioRaptor 2.9 AB, which showed twice as much displacement at 500 cycles as at 100 cycles. The Lupine Loop BR cyclic displacement was greater than that of the PEEK PushLock (at 100 cycles also), Bio-SutureTak, and PEEK SutureTak at 500 cycles (P < .05). The BioRaptor 2.9 AB cyclic displacement was significantly greater at 100 and 500 cycles than that of the PEEK PushLock and Bio-SutureTak (P < .05). The mean ultimate failure loads for these anchors ranged from 154 N (PEEK SutureTak) to 255 N (Bio-Mini Revo) and was statistically equivalent (P = .139). Correlation analysis showed no significant associations between anchor stiffness, cyclic load displacement, or failure load. CONCLUSIONS: Anchors with specific indications for hip arthroscopy showed very little displacement and had consistent failure loads under cyclic conditions in the acetabular rim. All hip anchors except the BioRaptor 2.9 AB showed less than 2.0 mm of displacement after 500 cycles. CLINICAL RELEVANCE: Biomechanical testing of suture anchors designated for hip arthroscopy should be performed in the acetabular rim before their use. Suture anchors used for shoulder arthroscopy may not perform as well in the hip.

[Slipped femoral epiphysis in children under 10 years of age. Clinical and radiologic evaluation of the surgical treatment]. / Epifisiolistesis femoral en menores de 10 años. Evaluación clínica y radiológica del tratamiento quirúrgico.

OBJECTIVE: Analyze the postoperative clinical and radiographic results of children under 10 years of age with slipped proximal femoral epiphysis and determine the differences compared to other age groups. MATERIAL AND METHODS: Retrospective study with a minimum follow-up of 2 years; Southwick's angle, treatment, and the rate of contralateral slip were all assessed. The Iowa scale was used for assessment purposes. RESULTS: A total of 18 patients and 23 hips were reported (5 cases were bilateral), mean age was 8.53 years, and Southwick's angle was 43 degrees. All cases were treated with in situ fixation, with a single screw in 19 hips, Kirschner's nails in 2 hips, and one screw and one nail in one hip; prophylactic fixation was used in one hip. Mean follow-up was 6.9 years. Three cases had contralateral slip occurring 6-13 months after the initial slip. The mean Iowa score was 85.69. A neck-shaft angle of 115 degrees was seen in the final X-ray; there were 3 complications: two cases of avascular necrosis and one chondrolysis. DISCUSSION: The clinical results were similarly good in this group of patients, who have typically been considered as very difficult to treat. Radiographically, a relatively normal anatomy was seen and only one case showed early arthrosis. The contralateral slip rate was not higher than in older patients.

Incidencia de fracturas de cadera en Corrientes, Bariloche y Comodoro Rivadavia / Incidence of hip fractures in Corrientes, Bariloche and Comodoro Rivadavia

La epidemiología de las fracturas de cadera fue estudiada durante 1 año en las ciudades de Corrientes, Bariloche y Comodoro Rivadavia, ubicadas en el nordeste y sur de la Argentina. Los resultados fueron comparados con estudios realizados previamente en el norte y centro del país. Sesenta y siete pacientes (43 mujeres, 24 hombres) de Corrientes, 36 pacientes (23 mujeres, 13 hombres) de Bariloche y 33 pacientes (25 mujeres, 8 hombres) de Comodoro Rivadavia de 50 años o más sufrieron una fractura atraumática de cadera. La incidencia de fracturas de cadera en las mujeres y los hombres fue la siguiente; Corrientes: 144 y 105, Bariloche 268 y 181, y Comodoro Rivadavia 252 y 78 fracturas de cadera /100.000 habitantes.año, respectivamente. La incidencia de fracturas de cadera en las mujeres del sur del país (Bariloche y Comodoro Rivadavia) fue similar entre sí pero inferior a los estudios realizados previamente. Los hombres de Comodoro Rivadavia tuvieron una incidencia inferior a la de Bariloche. La incidencia de fracturas de cadera en las mujeres de la ciudad de Corrientes fue la más baja. Los hombres de esta ciudad tuvieron una incidencia similar a la registrada previamente en otros estudios realizados en la región central. Los nuevos datos aportan información enriquecedora para completar la ya existente en el norte y centro de nuestro extenso territorio. Futuros estudios sobre factores de riesgo, realizados con similar metodología, serían de utilidad para poder comprender mejor las diferencias encontradas.