ABSTRACT
La esquina posterolateral presenta una anatomía variable y usualmente es sometida a mecanismos combinados. Objetivo: conocer los patrones lesionales de rodilla con inestabilidades graves que comprometen la esquina posterolateral. Material y método: evaluación retrospectiva: clínica, radiología, artroscopía. Criterio de inclusión: bostezo lateral mayor de 10 mm con aumento comparativo de la rotación externa. Resultados: 17 rodillas. Radiología: fracturas avulsivas: 6 de la cabeza del peroné y 5 del platillo tibial lateral, fracturas mediales: 3 del cóndilo y del platillo tibial. Artroscopía: 10 rupturas del ligamento cruzado anterior y 9 del posterior; tendón del popliteo 2 lateralizado, rupturas del ligamento cruzado anterior y 9 del posterior; tendón del popliteo 2 lateralizado, 3 imagen de "y" invertida; en 10 el menisco se separa del platillo tibial laterla: Macroscopía en todas se comprometió el ligamento colateral y la cápsula, es frecuente la lesión distal. Conclusión: existe un porcentaje relevante de avulsiones óseas laterales (reparables). El compromiso medial es significativo y poco reconocido. Destacamos la visualización artróscopica del ligamento popliteofibular y las lesiones parciales del cruzado posterior.
Subject(s)
Humans , Male , Female , Adult , Knee Injuries , Medial Collateral Ligament, KneeABSTRACT
We investigated the possible role of hepatitis G virus (HGV or GBV-C) in the aetiology of acute non-A-E hepatitis in Argentina by detecting viral RNA in sera by reverse transcriptase-polymerase chain reaction (RT-PCR) using primers specific for the putative NS3 helicase region of HGV. Sixty two patients with acute hepatitis were included in this study. The absence of hepatitis A-E was confirmed by serological testing, and all patients were negative for HCV RNA and autoimmune markers. All patients denied alcohol intake and the use of hepatotoxic drugs. Their mean age was 35.3 years and 37 were males. HGV RNA was present in 19/62 (30.6%) of the patients with non-A-E acute hepatitis. Among HGV-positive patients, three had parenteral risk factors within 3 months of onset, one was a health care worker, one was sexually promiscuous, one had travelled to the Middle East and 13 (68.4%) had no history of parenteral exposure. Epidemiological, clinical and biochemical features between HGV-positive and negative patients did not achieve statistical significance. Hence, HGV appears to play a role in the pathogenesis of acute viral hepatitis; however, the etiology of a significant number of hepatitis cases remains unclear, suggesting the existence of an additional agent(s). The absence of parenteral exposure in most of the HGV RNA-positive patients in this study shows that routes of community-acquired HGV infection are not yet completely understood.
Subject(s)
Flaviviridae/isolation & purification , Hepatitis, Viral, Human/virology , RNA, Viral/blood , Acute Disease , Adult , Alanine Transaminase/blood , Female , Flaviviridae/genetics , Hepatitis, Viral, Human/blood , Humans , Male , Viremia , Virus LatencyABSTRACT
La luxación traumática de rodilla es una patología poco frecuente, debido a que esta articulación es una de las más estables del organismo. Se realizó una revisión retrospectiva de todos los pacientes que han sufrido esta patología, durante un período de 5 años, en el Hospital Regional de Temuco. Se encontraron 6 luxaciones en 5 pacientes. La edad promedio de presentación fue de 26 años, siendo el 80 por ciento de los hombres. El mecanismo de lesión más frecuentemente observado fue el atropello a peatón. El alcohol estuvo asociado en un 40 por ciento de los casos. La luxación se presentó en el contexto de un politraumatizado, en el 80 por ciento de los casos. En ninguno se observó lesión de arteria poplítea. En todos el manejo inicial fue conservador, realizándose cirugía en 2 pacientes. La evolución de la función de la extremidad comprometida fue difícil de seguir, debido a que los pacientes acudían escasamente a control
Subject(s)
Humans , Male , Female , Adolescent , Adult , Joint Dislocations , Knee Injuries/etiology , Hospitals, State/statistics & numerical data , Knee Injuries/diagnosis , Knee Injuries/therapy , Multiple Trauma , Orthopedic Procedures , Plastic Surgery Procedures , Retrospective StudiesABSTRACT
The principal volatile component (99 + %) of the sex pheromone glands ofLutzomyia longipalpis from Lapinha, Brazil, has been isolated and characterized as a novel homosesquiterpene with the specific structure proposed as 9-methylgermacrene-B, (E,E)-8-(1-methylethylidenyl)-1,5,10-trimethyl-1,5-cyclodecadiene.
ABSTRACT
The principal behaviorally active volatile component (ca. 90% +) of the sex pheromone glands ofLutzomyia longipalpis from Jacobina. Brazil, has been isolated and characterized as a novel homosesquiterpene with the structure 3-methyl-α-himachalene (C16H26). A minor component (ca. 10%) of the gland extract has also been identified as the sesquiterpeneα-himachalene (C15H24). This work confirms that there are at least 3 members of theL. longipalpis species complex.
ABSTRACT
La displasia de cadera es una patología congénita cuyo tratamiento varia siendo mas costoso y complejo mientras mas tardío es su diagnóstico. Se estudiaron los tiempos que demoran algunos pasos del diagnóstico, en un consultorio de Santiago; como información base para establecer medidas destinadas a optimizar dicha gestión. Se analizaron los registros de morbilidad del medico y fichas clínicas de 71 niños con sospecha de displasia de cadera, y se investigó el tiempo entre la sospecha por enfermería, la indicación de la radiología por el médico y la consignación del resultado en la ficha. Se destaca que en el 61,.9 por ciento de los casos, el proceso diagnóstico estuvo dentro de los 2 meses; sin embargo en 23,8 por ciento , tomó mas de 4 meses en realizarse el proceso diagnóstico.; Por lo tanto, si se considera que en forma ideal el niño debiera recibir un tratamiento en el primer semestre de vida y el examen confirmatorio es fácil y rápido, los tiempos son excesivos y aumentan el riesgo de secuelas posteriores. Se aconseja nuevos estudios para identificar las causas de estos tiempos tan prolongados
Subject(s)
Humans , Male , Female , Hip/injuries , Hip Dislocation, Congenital/genetics , Hip Dislocation, Congenital/diagnosis , Primary Health CareSubject(s)
HTLV-I Infections/complications , Hereditary Sensory and Motor Neuropathy/complications , Spastic Paraplegia, Hereditary/complications , Adult , Aged , Female , Genes, Viral , HTLV-I Antibodies/analysis , HTLV-I Antigens/analysis , HTLV-I Infections/genetics , HTLV-I Infections/immunology , Human T-lymphotropic virus 1/genetics , Humans , Male , Middle Aged , Muscles/pathology , Paraguay , Spastic Paraplegia, Hereditary/genetics , Spastic Paraplegia, Hereditary/pathologyABSTRACT
Tamarin activity patterns and habitat utilization strategies in the Tropical Dry Forest of the Panama Canal Zone were monitored quantitatively using radio-location telemetry. The daily tamarin activity pattern differed from that of other Neotropical primates in that early morning and late afternoon activity normally did not occur. Total daily activity time averaged 676 +/- 62 min. Sleeping trees, and behaviors associated with their use, were documented. Daily path length averaged 2,061 +/- 402 m. Mean travel distance was 468 +/- 66 m. Approximately one-third of the home range was utilized on a given day. Wet season home ranges for two social groups were 26 and 32 ha in area. Areas of low brush, forest edge, and vine-entangled second growth were heavily used by foraging tamarins. Large shade trees, particularly evergreens, were important as refuges from solar radiation. Open-canopy forest types and areas of grass were avoided. Social groups on resource-stable lowland sites defended territories; those on unstable upland sites used a system of time-space segregation. Upland groups became seminomadic during the dry season. Suitability of home range site may affect social group stability, natality, and infant survivorship.
Subject(s)
Behavior, Animal , Haplorhini , Animals , Defecation , Feeding Behavior , Female , Homing Behavior , Locomotion , Male , Panama Canal Zone , Rain , Seasons , Sleep , Territoriality , Time Factors , UrinationABSTRACT
From August 1973 through May 1974 a total of 148 marmosets (Saguinus geoffroyi) were examined for blood parasites. Parasites were detected in 93.2% of the monkeys. Direct examination of blood revealed 82.4% infected with trypanosomes; Trypanosoma cruzi was seen in 1.3% of the animals examined T. minasense in 52.7% and T. rangeli in 25%. However, the use of several diagnostic tests (direct microscopic examination, hemoculture, xenodiagnosis, and animal inoculation) in 15 marmosets revealed T. cruzi in 40%, T. rangeli in 93% and T. minasense in 87%. The high rate of infection among marmosets suggests that they are important natural hosts of T. cruzi and T. rangeli in the Panama Canal Zone.
Subject(s)
Callitrichinae/parasitology , Chagas Disease/veterinary , Monkey Diseases/epidemiology , Animals , Chagas Disease/transmission , Haplorhini , Panama Canal Zone , Trypanosoma/isolation & purification , Trypanosoma cruzi/isolation & purificationABSTRACT
Field observations on reproductive activity in the Panamanian tamarin (Saguinus oedipus geoffroyi) were made in conjunction with the examination of 131 reproductive tracts collected at regular intervals over one year. Reproductive tract characteristics were compared over seasons. Embryonic and fetal development were also assessed. A distinct birth peak was observed from April to early June. Pregnancies in April and May point to a potential, but unrealized, birth peak in August and September. Despite the tendency toward birth peaks, reproductive activity occurred throughout the year. Reproduction was limited to a single female per social group. The average number of infants born per female was two. Groups inhabiting lowland areas appeared to be more successful in raising young than groups inhabiting upland areas.