Two pigment concentrates, differentiated as dark (D) and rose (R), were prepared from fermented red beet (Beta uulgaris L var rubra) and applied to two types of maize starch, industrial (IS) and modified (MS). The samples were stored for 191 days at room temperature. The decay of the two red pigments in the two maize starches was DIS 12.70 %, DMS 9.43 YO, RIS 14.15 %, RMS 8.54 % and followed a first order reaction. The modified maize starch was found to be the most suitable carrier of the pigment. Water activity played a determining role in this result.
PURPOSE OF THE STUDYThe aim of this pilot study was to evaluate the clinical and functional outcomes of total hip arthroplasty (THA) in patients with acetabular fractures due to a low-energy injury. Acute primary THA included an antiprotrusion cage and autologous bone grafting of the acetabulum. This prospective study was carried out between 1998 and 2004. MATERIALTen patients, of whom six were men, (average age, 71 years; range, 60 to 83 years) with acetabular fractures were treated by THA. Two patients had type A2, two had type B1, three had type B2 and three had type B3 fractures, as assessed by the AO classification. X-ray showed osteoporosis due to decreased bone mass in all patients, and dislocations of the fragments in the weight-bearing area of the joint exceeded 1 cm. The average follow-up was 36 months. METHODSIndications for primary THA included, in addition to higher age, displacement in the fracture line exceeding 1 cm, a fracture line extending to the weight-bearing part of the acetabulum, presence of hip arthritis, cartilage injury, defects of the weight-bearing area of either the femoral head or acetabulum, and Pipkin type IV injury. The interval between accident and surgery ranged from 6 to 12 days (average, 9.5). Three surgical techniques were used, namely, cemented THA with a polyethylene cup cemented into an acetabulum-stabilizing cage; reconstruction with a cementless RSC acetabular component; internal fixation using screws and a cemented cup. Bone grafting of the acetabulum was used in all patients. Evaluated were basic operative parameters, complications, X-ray findings, ability to walk and Merle d'Aubigne scores. RESULTSThe average operative time was 100 min, the average blood loss was 1000 ml. Hip motion showed the following average values: flexion, 110°; extension, 10°; rotation, 30°-0°-30°; adduction, 25°; abduction, 35°. All patients returned to their preoperative range of motion. X-ray examination showed good reduction, bone graft was completely incorporated in the acetabulum, and no displacement or signs of loosening or graft migration were recorded. Two patients had Brooker type I heterotropic ossification. The final evaluation of function at 36 months on the basis of the Merle d'Aubigne classification showed excellent and good results in four (57 %) and three (43 %) patients, respectively. The remaining three patients had a shorter follow-up, but were fully mobile with no complications observed. DISCUSSIONIt has been reported that bony union of acetabular fracture after open reduction and internal fixation (ORIF) was achieved in 74 % patients younger than 60 years, but in only 44 % of the patients older than 60 years. Secondary THA following ORIF is a demanding technique. Due to adhesions and a frequent malposition of the acetabulum, THA is associated with and increased risk of infection, tendency to develop para-articular ossifications, and a higher risk of early component loosening than in the standard procedure. One of the options is to perform acetabular stabilization and prima...
PURPOSE OF THE STUDYThe aim of the study was to assess the clinical outcomes and permanent sequelae of pelvic fractures at one year after injury and to identify factors that influenced these results. MATERIAL AND METHODSThe group evaluated consisted of 151 patients older than 15 years treated for pelvic fractures in 2007 at seven hospitals in the Czech Republic and Slovakia. This one-year descriptive prospective study included all basic epidemiological data concerning the patients and the evaluation of their clinical results using the Majeed score. The obtained data were statistically analysed by the χ 2 test of independence and contingency tables at a 5% level of significance. For data obtained at a low frequency, only descriptive statistical methods were used. RESULTSFrom the original group of 237 patients (101 women and 136 men), 16 died (7 women and 9 men) and 70 were lost for follow-up (28 women and 42 men), leaving 151 patients (64%) for evaluation. This final group comprised 66 women (44%) and 85 men (56%) with the age range of 16 to 82 and an average age of 42.7 years (women, 45.3 years; men, 40.7 years). Age distribution, causes of injury, types of pelvic fracture, associated injuries and methods of treatment in this group were similar to those in the original group. The clinical outcomes evaluated using the pelvic Majeed score were excellent and good in 85%, fair in 12% and poor in 3% of the patients. The prediction of clinical outcome was more accurate when based on the extent of dislocation of the dorsal segment after fracture healing than on the type of pelvic fractureThe permanent sequelae were recorded in 22 patients (15%) and a total of 43 specific complaints were identified; some patients had multiple sequelae involving neurological, urological and sexual problems. Neurological deficit was related to the type of pelvic injury and its highest occurrence was associated with type C pelvic fractures. Permanent neurological deficits were found in 15 patients (10% of patients in the final group), of whom 10 were diagnosed early after injury as having neurological lesions (7% of the final group) and in five the diagnosis was made after surgery (8 %of surgically treated patients). Fifteen permanent urological disorders were recorded in 13 patients and they also were most frequent in type C fractures. However, they were more strongly associated with primary urethral injury and primary or post-operative neurogenic lesions. Sexual sequelae were also found in association with type C fractures; almost all patients with these problems had injury to the lower urinary tract or neurogenic lesions. Permanent gastrointestinal sequelae were in three patients; all of them sustained unstable pelvic fractures and were diagnosed with post-operative neurogenic lesions. DISCUSSIONBased on the evaluation of basic patient data, the patient group described here can be regarded as a representative sample of the originally treated patients. Therefore, in the authors' view, the results presented here can be taken as valid.In ag...
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