Comparison of interfragmentary compression in conventional and locked plating of proximal unicondylar tibia fractures : A biomechanical cadaver study.

The extent of interfragmentary compression in intra-articular fractures treated with various fixation methods have not yet been reported. Lateral split fractures were created in six pairs of cadaver tibiae treated -using buttress plating with lag screws (group C) or locked buttress plating after clamp compression (group L). Interfragmentary compression and fracture displacement were continuously measured using pressure sensors and a stereoscopic 3-D image correlation system. Significantly larger interfragmentary compression was found initially after clamping the fragment (p < 0.05) in group C (median ±â€ˆSD ; 45.1 ±â€ˆ5.0 N/mm2) compared with group L (33.6 ± 3.4 N/mm2), and a statistical trend towards larger compression was also found after cyclic loading (p = 0.05) in group C (45.3 ±â€ˆ8.6 N/mm2) compared with group L (28.7 ±â€ˆ5.8 N/mm2). These data indicate that conventional plating with lag screws achieves higher interfragmentary compression in this model compared with external clamp compression and locked plating.

[Epileptic seizure-induced vertebral body fractures]. / Wirbelkörperfrakturen im Rahmen eines generalisierten epileptischen Anfalls.

In the literature epilepsy is described as the most common cause of generalized seizures. Vertebral body fractures are a rare complication of epileptic convulsions, occurring with an incidence of 3%. We present the case of a 37-year-old healthy patient, who sustained contiguous fractures of the thoracic and lumbar spine during the first manifestation of epilepsy with primary localized and then secondary generalized epileptic seizures. A complication-free outcome was achieved with a combination of conservative and operative therapies.

[Spinal deformity in Parkinson's disease: a treatment proposal]. / Wirbelsäulendeformitäten bei Parkinson: Ein Behandlungsvorschlag.

Spinal deformities in Parkinson's disease are difficult to treat but with good indications, spinal surgery is a better treatment option taking into account all factors that accompany Parkinson's disease. Despite greater operational time and cost expenditure with a long rehabilitation period, long stretch segmental fusion is preferable to short stretch segment fusion due to the lower revision rate. An adequate postoperative rehabilitation and good patient care is essential for success. This case illustrates successful treatment of a patient with Parkinson's disease and camptocormia by long stretch segmental fusion.

Effect of resistive weight training in prepubescents.

Until recently, resistive training for prepubescents has met largely with skepticism. Original, and possibly premature, conclusions with respect to the efficacy of weight training on prepubescents, considered insufficient circulating androgens in children as the predominant restriction to strength gains. Additionally, safety concerns regarding bone integrity, epiphyseal continuity and risk of injury have been common. A review of the most recent investigations overwhelmingly supports significant strength gains in prepubescents as a result of weight training. Further, based on recent findings of short-term prepubertal weight training, no damage to bone, epiphyses, growth tissue, or muscle has been reported. In light of these findings, weight training may be recommended provided expert professionals are consulted and strict supervision is maintained. It is also recommended that repetitions be maintained within the 6-10 range rather than utilizing maximum weight. J Orthop Sports Phys Ther 1989;11(3):96-99.

Comparison of hiking stick use on lateral stability while balancing with and without a load.

To compare hiking stick use on lateral stability while balancing with or without a load (15-kg internal frame backpack) under conditions of no stick, 1 stick, and 2 sticks for six trials 15 volunteers ages 19 to 23 years (M = 21.7 yr.) were tested six separate times on a stability platform. During randomly ordered, 1-min. trials, the length of time (sec.) the subject maintained balance (+/-10 degrees of horizontal) and the number of deviations beyond 10 degrees were recorded simultaneously. Backpack and hiking sticks were individually adjusted for each subject. A 2 x 3 repeated factor analysis of variance indicated that subjects balanced significantly longer both with and without a load while using 2 hiking sticks than 1 or 0 sticks. Significantly fewer deviations beyond 10 degrees were found when subjects were without a load and using 1 or 2 sticks versus when they used none, and no significant difference in the number of deviations were found between 1 and 2 hiking sticks. When subjects were equipped with a load, significantly improved balance was found only between the 2 sticks and no sticks. Balance was significantly enhanced by using hiking sticks, and two sticks were more effective than one while carrying a load. An increase in maintenance of static balance may reduce the possibility of falling and injury while standing on loose alpine terrain.

Health and ergogenic effects of caffeine.

The indiscriminate use of caffeine by people of all ages may present health hazards. The public at large needs to be more informed of the presence of caffeine in commonly consumed foods and beverages, particularly by infants, children and pregnant women. It is the responsibility of all consumers to investigate the caffeine content of suspected products so that intake may be objectively monitored. Although doubts still exist about the efficacy of caffeine as an ergogenic aid, particularly for exercise of high intensity and short duration, the IOC and the National Collegiate Athletic Association of the US have adopted bans on the use of caffeine to aid sport performance. Currently, both of these organizations prohibit the concentration of caffeine in urine to exceed 15 micrograms-ml-1. That is to say, only very large amounts of caffeine are not permitted at present. Additional research is needed to confirm or deny the contraindications presented by the ingestion of caffeine on a chronic basis.