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Biomedical subjects

W Pförringer

Publications and source records attributed to W Pförringer.

At least 37 records · Page 2Linked to original sources
PubMed1990

[Traumatology in indoor handball sports. A sports medicine analysis of the incidence of injuries and accident epidemiology of indoor handball sports in senior players in the Federal Republic of Germany after 1981].

Indoor handball sport is steadily gaining in importance in Germany in terms of sports medicine: not only is there a rapid increase of the number of members of the German Handball Association (DHB), but also an increase of sport injuries caused by handball playing, both in respect of incidence and severity. Sport injuries of 286 indoor handball players of the Federal German teams of senior players that occurred during the past 5 years, were analysed. 540 injuries and damage caused by stress were analysed that had been given medical attention; these were included in the survey and classified according to epidemiology and incidence. It is possible to advance suggestions regarding the prevention of injuries on this basis, with particular emphasis on changing the rules governing indoor handball playing in the sense of restricting the physically emphasised manner of playing which is particularly injury-prone.

Adult↗
PubMed1987

[Multilocular myositis ossificans--damage caused by excessive stress in performance sports?].

This is a report of a girl of 16 years of age who complained of pain in both legs after intensive competitive sports, the main event being the 800 m race. Radiologically visualised were periostal reactions and new periostal bone formations at the femur and lower leg. Diagnosis was extremely difficult due to generalised signs and symptoms, such as temperature, associated with inappetence and a "run-down" feeling, increase of alkaline phosphatase and liver enzyme levels and of the blood sedimentation rate. Differential diagnosis of heterotopic ossifications is dealt with in detail.

Adolescent↗
PubMed1987

[Ice hockey injuries. Studies of the highest West German league].

Ice hockey is the speediest team sport and also considered to be one of the roughest of all sports. Due to the high rate of injuries and the lack of competent studies in the Federal Republic of Germany, we started recording the First League in connection with injuries and their causes via a thorough questioning of the players. The results of the hitherto evaluated 88 out of a total of 207 First League Players - i.e. 42.5% - show that head injuries are most frequent; however, lesions of shoulders and upper and lower extremities are far more portentous ++ to the affected players in many respects. The association with causes and mechanisms of the different kinds of injuries make it clear that a marked tightening of the rules and an improvement in the protective clothing would offer good possibilities to reduce the rate of injuries drastically in ice hockey a kind of sport that is steadily getting more and more popular.

Adult↗
PubMed1987

Aspects of traumatology in ice hockey.

Ice hockey is the fastest team game played and is also considered to be one of the roughest of all sports, with a high injury incidence. Injuries and their causes were recorded by the questioning of players in the first league of the Federal Republic of Germany. Eighty-eight out of a total of 207 first league players were included in this study. Head injuries were found to occur most frequently: however, lesions of the shoulders and of the upper and lower extremities had a more detrimental effect. The links between causes and mechanisms of the different kinds of injuries make it clear that a marked tightening of the rules and an improvement in protective clothing would serve to reduce the incidence of injuries in ice hockey.

Arm Injuries↗
PubMed1986

[The sports shoe].

Today children wear sport shoes more and more on a daily basis, although the sport shoe was originally designed to serve just for sports purposes. Good sport shoes for children must therefore fulfill the criteria for everyday shoes as well as the requirements for good running shoes, namely, adequate cushioning in the heel area, support during pronation and directing the rolling movement for push-off using the forefoot. For these purposes, the shoe should not represent a miniaturized version of an adult sport shoe, but must be designed for the form of the child's foot and also take the fragility of the connective tissue into consideration, in addition to user comfort, fit, and foot ventilation. In comparison with today's models, therefore, good sports shoes could be improved in many areas.

Athletic Injuries↗
PubMed1982

[Hemarthrosis and cruciate ligaments - biomechanical studies. 1].

Experimental studies on animals were conducted in order to investigate the influence exerted by a posttraumatic hemarthrosis upon the cruciate ligaments. The cruciate ligaments used in this experimentation had partly been exposed only to a posttraumatic hemarthrosis, the other part showed an additional lesion of the synovial sheath. Further investigations were carried out in order to find out if the effect of the hemarthrosis is modified by a plaster immobilization of the concerned extremity. In a comparative study, cruciate ligaments which had been exposed to hemarthrosis for different periods of time and normal cruciate ligaments were submitted to mechanical tension which was exerted until rupture. By means of extensive pre-experiments it was possible to define the practical execution, the storage of the removed cruciate ligament preparations, and the general mechanical behavior of cruciate ligaments in rabbits. The study showed that all cruciate ligaments exposed to hemarthrosis presented at least a temporary significant reduction of their mechanical loading capacity. This reduction was even more significant in case of an additional lesion of the synovial sheath. In the first case, a restitution of the normal loading capacity was observed after 8 to 12 weeks, in the second case (additional lesion of the synovial sheath) after 12 to 16 weeks. These results were not improved by a plaster immobilization of the concerned extremity; on the contrary this caused rather a negative tendency.

Animals↗
PubMed1982

[Hemarthrosis and the cruciate ligaments - morphological studies. 2].

Some morphological investigations were conducted with cruciate ligaments of rabbits which had been exposed to post-traumatic hemarthrosis for different periods of time and submitted to an additional lesion of the synovial sheath. Already one week later, histologic examination under the microscope showed significant modifications of the fibrous structure of these ligaments. These modifications persisted for several months and consisted in bloatings of the individual fibres, disaggregations of the fibrous structure, partly even cystic necrosis. The electron microscope allowed to give a more precise definition of the modifications and to demonstrate morphologically the structure alteration of collagenic fibres caused by hemarthrosis. The visible alterations of the fibrous structure of such cruciate ligaments will partly persist still for a long time after the restitution of their full mechanical loading capacity.

Animals↗
PubMed1981

Surface replacement of the hip. Experimental studies.

Surface replacement of the hip has been performed in 25 rabbits. Twenty animals were chosen for evaluation of the result of the operation after an average period of five months postoperatively. Tetracycline injections were given for fluorochrome labeling and radiographic controls have been made in vivo to check the position of the cup before the animals were sacrificed. Histological examinations were made from slides, which were gained after the metal cup had been removed with the bone cement still in place. It was found that the bone underneath the cup survived the surface replacement and that there was a normal metabolism further on. The trabeculae even grew into the surface structures of the inner layer of the bone cement and there was no interposition of membranes of fibrous tissue. It could be demonstrated that fibrous tissue between bone and bone cement is found only in cases of loosening of the cup and the cement or in cases of insufficient contact between this interface from the moment of the operation on. This is possible when air bubbles arise in the bone cement and get in contact with the trabeculae of the femoral head. Fluorochrome labeling proved the formation of new bone underneath the cup and the survival of the osseous structures of the coxal end of the femur. We believe, that in clinical cases it is necessary to remove all predamaged cancellous bone from the head of the femur (i.e. in cases of avascular necrosis) before the cup is attached. Close contact between the bone cement and the healthy spongiosa is one of the conditions for success in surface replacement of the hip.

Animals↗
PubMed1981

[Damage of the upper femoral epiphysis. Long time results following trauma to the coxal end of the femur (author's transl)].

Traumatic lesions of the coxal end of the femur during growth often lead to irreparable damage of the upper femoral epiphysis. These lesions as well as their influence to the femoral epiphysis are described and classified according to our own experiences and a study of the literature is given as well. Our own results are fractures of the neck of femur, transcapital femoral fractures, pelvic fractures and traumatic luxations during growth. For complementation of diagnostic examinations possibilities of non-traumatic damage of the epiphysis of the femoral head during growth are given.

Acetabulum↗
PubMed1980

[How dangerous is squash? Results of an investigation on injury risk (author's transl)].

Injury risk for squash lies above the international average of total sport injuries. According to a nation-wide assessment, 7 accidents occur yearly in 100 squash-players. Only half of these injuries, however, require treatment. A temporary sports- and work incapacity results relatively frequently. With the exception of eye injuries, the rate of severe injuries leading to permanent damage is low. If appropriate preventive measures are taken, particularly with respect to eye injuries, squashplaying does not entail significantly higher dangers than other racket-games.

Adult↗
PubMed1980

Electronic studies of gait disturbances. A new method of gait examination in patients with arthrodesis of the ankle and/or subtalar joint.

A follow-up study on 160 patients with an arthrodesis of the ankle and/or subtalar joint has been made. Besides clinical and roentgenological examinations the gait of the patients was checked with a new electronic device. In addition we tested the pressure distribution underneath the sole of the affected foot and compared it to the contralateral side. This was found to be a valuable contribution to the examination methods used and can help to give a more objective judgement of the patients subjective complaints. Besides confirming known facts it was found that there were divergent results of electronic gait studies from examinations which are based on the usual clinical and X-ray studies. This may help to improve the patient's gait by correcting mechanical aids or, in rare cases, indicating another operation.

Ankle Joint↗
PubMed1980

Fractures of the hip in children and adolescents.

Long-term results of 52 fractures of the hip in 51 children and adolescents are discussed. A distinction was made between fractures in children (aged 1 to 11 years) and those in adolescents (aged 12 to 18 years). Irrespective of the type of fracture it was found that immediate operative treatment leads to the best results. In children as well as in adolescents the risk of avascular necrosis, premature closure of the epiphysis and non-union is less following immediate operative treatment than following delayed operative treatment or conservative treatment. The prognosis of these fractures depends on the amount of damage to the vascularization. Treatment of children consisted of open reduction and fixation with K-wires followed by postoperative immobilization in a hip-spica for 6 weeks. Adolescents were treated with three-flanged nails usually without postoperative plaster immobilization. In both children and adolescents internal fixation may also be carried out with screws, in which case these must not cross an open epiphyseal plate. In both groups a non-weight-bearing period of 6 to 12 months is advisable. The results in adolescents were definitely poorer than in children. Seemingly completely destroyed hips can reintegrate even to a nearly "restitutio ad integrum" state after a period of years.

Adolescent↗