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Biomedical subjects

J Bajerová

Publications and source records attributed to J Bajerová.

9 recordsLinked to original sources

[Treatment of congenital pseudarthrosis of tibia by vascularized fibular graft].

PURPOSE OF THE STUDY: The aim of the study was to evaluate the results in a group of patients with congenital pseudarthrosis of the tibia treated by transfer of a vascularized fibular graft from the contralateral extremity. MATERIAL: The group included three boys and two girls aged 2 to 8 years at the time of surgery. In two patients, the vascularized graft transfer was preceded by other operations. All patients but one had Crawford type IV pseudarthrosis. The signs of peripheral neurofibromatosis were found in four of the five patients. METHODS: The operation was carried out by two surgical teams, i. e., orthopedic and microsurgery (plastic surgery) specialists. Deep dissection of the pseudarthrosis was performed down to healthy, well vascularized tissue; a vascularized pedicle bone graft was harvested from the contralateral fibula. The graft was inserted and anchored intramedullarily in both tibial fragments, and stability was provided with a K-wire introduced through the calcaneus. Subsequently, the vascular pedicle of the fibular graft was joined to the surrounding vessels (anterior tibial artery and anterior tibial vein). The extremity was immobilized in plaster cast and later a KAFO brace was applied. RESULTS: Graft union partially failed in the proximal end of the graft due to bone resorption of both the graft and the proximal tibial fragment in two patients. This was successfully treated by additional spongioplasty. In all patients bony union was achieved at an average time of 9.8 months (range, 6 to 21 months). An increase by more than 100 % in the diameter of the transplanted fibula was recorded in four patients. The increase, which was of course related to follow-up time, was a clear proof of primary graft vascularization. DISCUSSION: The use of vascularized fibular graft harvested from the contralateral extremity showed high effectiveness in comparison with other methods. This was in agreement with the relevant literature reports. CONCLUSIONS: This method can be used regardless of patients' age and our experience showed that, even in small children, union can be achieved and can thus allow for early weight-bearing and prevention of crus atrophy.

Bone Transplantation↗

[Video-assisted tenotomy of the triceps muscle of the calf in cerebral palsy patients].

PURPOSE OF THE STUDY: The aim of the study was to demonstrate the outcomes of video-assisted tenotomy of the gastrocnemius and soleus muscles in children with the spastic form of cerebral palsy. MATERIAL: In the period from September 2003 to March 2004, 18 lower extremities in 14 patients were operated on.A set for endoscopic plastic surgery with a 4-mm trocar was used. Aponeurotomy was carried out with a scalpel no. 11 or arthroscopic scissors. The treated limb was immobilized in plaster cast for 6 weeks. METHODS The inclusion criteria were: an equinus gait free from a valgus or a varus deviation, preferably unilateral, and the age range between 4 and 10 years. The patients were examined before surgery and followed up at 3-month intervals. RESULTS: In 16 out of 18 treated extremities, simple aponeurotomy of the gastrocnemius and soleus muscles was sufficient to achieve 20 degrees dorsiflexion. In two cases it was necessary to complete the procedure at the same stage by video-assisted sliding double-point tenotomy of the Achilles tendon. The short-term follow-up did not reveal complications such as failure of wound healing or neurological or vascular disturbance. DISCUSSION: The international literature data show that this method has largely been developed on cadavers. Much attention has been given to potential injury to the sural nerve. However, the ultimate goal of this operation, i. e., sufficient correction, should be regarded as a much more important factor. In older children, simple aponeurotomy may not achieve this objective and therefore the authors developed a procedure combining video-assisted aponeurotomy with sliding double-point tenotomy of the Achilles tendon. CONCLUSIONS: Video-assisted tenotomy of the gastrocnemius and soleus muscles proved a fully effective method in our group evaluated at short-term follow-up.

Cerebral Palsy↗

Smoking and pregnancy: prevalence, knowledge, anthropometry, risk communication.

Information about smoking impact on pregnancy as well as clear advice to stop and a treatment offer should be included into the health care of pregnant women. We contacted them within the first 3 days after delivery. In the sample of 265 women 23.8% (63/265) smoked during their pregnancy (51.9% with basic education only, 25.8% with high school and 5.0% with university education), and 7% of the sample (19/265) did not quit by the delivery. Only 68% of smokers (43/63) were asked about their smoking habits during the pregnancy by their gynaecologist, and both smokers and non-smokers had insufficient information about the impact of smoking on their baby (40% of smokers and 32% of non-smokers had no idea at all), the doctor was the source of this kind of information only in 5% (13/265) cases. Smokers' children had a lower average birth weight (3.084 g in smokers vs. 3.325 g in non-smokers, p=0.02) and were smaller (49.3 cm vs. 50.5 cm respectively, p=0.02). Smokers' bodyweight increased more than non-smokers' during their pregnancy (gaining 14.8 kg vs. 12.9 kg respectively, p=0.02), they also underwent the delivery at a lower age (27.6 vs. 30.0 years respectively, p<0.01) and after a non-significantly shorter duration of pregnancy (38.7 weeks vs. 39.0 weeks respectively, p=0.53). If 23.8% of pregnant women smoke and 90.6% of them would like to stop, it is a missed opportunity for education and treatment of tobacco dependence by their physicians.

Birth Weight↗

Selective treatment program for developmental dysplasia of the hip in an epidemiologic prospective study.

Over 1 year of ultrasound (US) mass screening, 4,568 newborns were examined consecutively at age 3-4 weeks using both clinical and ultrasonographic examination methods. The US examination involved both the static and dynamic scanning. In total, 25 babies were treated early (5.5 per 1,000), and 6 babies were given late treatment for postnatally developing acetabular dysplasia (1.3 per 1,000). Early treatment was instituted only for hips remarkably distorted anatomically, as could be seen from their shape on the static scan, and for those that were sonographically unstable with an apparent stress displacement. Clinical examination at age 3-4 weeks failed in more than half of all sonographically abnormal cases. In one case, the postnatal development of the hip joint was associated with the worsening of its formation and a developing subluxation despite its primary normal characteristics.

Czech Republic↗

[Clinical and ultrasonic diagnosis of congenital hip dislocation (dynamics of changes in early therapy)].

The authors present part of their prospective epidemiological study of congenital dysplasia of hip joints within which newborns were examined by ultrasonogram prior to the beginning of the therapy. Apart from the standard examination in the frontal plane after Graf they examined on principle also the ultrasonographic stability by the dynamic test after Schuler as well as by the application of the probe anteriorly with the simultaneous provocation according to Palmén. The authors have processed pathological ultrasonographic findings in 53 newborns (64 hip joints). The technique of the examination by ultrasound from the anterior approach is explained in detail. The comparison of both dynamic tests has shown that the examination from the anterior approach is considerably more sensitive than Schuler's dynamic test and also fully correlates with the clinical finding. It is a fact that the shift of the head in the flexion dorsally represents the most important component of the movement in unstable hip joint during provocation, it is far more noticeable than the lateralization of the head or the shift in the cranial direction. After achieving ultrasonographic stability the classical Graf method is sufficient for the registration of residual changes on the acetabular rim. The follow-up of patients until their complete healing has shown a surprisingly rapid remodellation of hip joints. The whole complex of clinically unstable hip joints has been divided into subgroups according to Graf classification. In type IIc or IId on the basis of ultrasonographic examination from the anterior approach the stable joints from the ultrasonographic viewpoint have been distinguished from unstable ones. The follow-up carried out in short intervals has shown that of longest duration is the remodellation of total dislocation and, on the contrary, of shortest duration is the healing of joints in the IIc or IId type. An absolute majority of affected hip joints have become normal until 3rd month of the age. The complex does not include two patients with teratological dislocation, the incidence of which has been determined in our study by the ratio of 2 cases in 35,550 of timely examined newborns. The role of the factor of spontaneous stabilization cannot be in this part of the study completely discounted. However, herewith we present part of an accomplished epidemiological study where the number of timely diagnosed patients including late diagnoses corresponds to the number of dislocations and subluxations determined within the conventional late diagnosis.

Female↗