Edward J. Eyring

Proximal Tibial 90-90 Traction in Treatment of Children with Femoral-Shaft Fractures

The results of skeletal traction for the treatment of eighty-one femoral-shaft fractures in children are described. The traction pin, placed through the proximal end of the tibia, allows traction suspension of the extremity in 90 degrees of flexion at the hip and knee. Position, length, and alignment were easy to obtain, and patient care was very easy. The healing was prompt, and the average time in traction was from three to four weeks followed by a spica cast for an average of from five to six weeks. The average duration of limited activity was from three to four months. In children over ten years old or weighing more than forty-five kilograms, knee pain, angulation, and difficulty in maintaining length were frequent problems. Therefore, 90-90 traction is not recommended for treating such children. No serious complications occurred. Potential complications of treatment were sought, but none was found. Only two significant limb-length inequalities occurred.

Continuous Compression of Rabbit Articular Cartilage Producing Loss of Hydroxyproline Before Loss of Hexosamine

The effect of continuous mild compression of the articular cartilage of rabbit knee joints was studied grossly, histologically, and chemically. Typical gross and microscopic lesions were produced over a six-week period and graded according to accepted techniques. Chemical analysis of the cartilage content of hydroxyproline and hexosamine revealed a greater initial loss of hydroxyproline but both moieties seemed to have been lost after six weeks of compression. The mechanism for cartilage degradation in this system would appear to be different from that in infection, since it has been suggested that, in infection, the loss of hexosamine is the first event. Possible explanations of these findings are: (1) appearance of some other cellular or matrical substances and the operation of separate enzyme systems degrading chondroitin sulphate and hydroxyproline independently or (2) synthesis of hydroxyproline deficient collagen.

Synovectomy in Juvenile Rheumatoid Arthritis: Indications And Short-term Results

A study of sixty-eight cases of juvenile rheumatoid arthritis in conjunction with a review of the literature resulted in the establishment of criteria defining indications for synovectomy which make it extremely unlikely that remission would have occurred without surgical treatment.Evaluation of for

Direct determination of serum zinc and copper by atomic absorption spectrophotometry

Abstract The method for the determination of zinc and copper in serum which has been described in this paper is simple and rapid, requiring only undiluted serum. Absorbance is measured on a commercially available atomic absorption spectrophotometer. Mean reproducibility and recovery of this method for serum zinc is 103.4% and for serum copper is 103.3%. The results on normal adult and pediatric subjects are comparable to those reported in the literature. Preliminary studies show that this method lends itself to analyses of those trace minerals which are in low concentrations in human biological specimens, since no dilution factor is present. The addition of a direct concentration computer readout to the A.A.S. system simplifies determinations in a low concentration range. The most recent development in nonflame atomic absorption spectrophotometry, the carbon rod atomizer (CRA), is a promising technique for minerals in low ranges (39). However, the use of xylene impregnation to prevent sample absorption into the rod is not yet perfected and incomplete recovery remains a problem.

Determination of zinc by flameless atomic absorption spectrophotometry

Abstract The flameless atomic absorption method described here is a simple, rapid, accurate microtechnique for determining zinc in aqueous solutions, serum, or urine. It requires no sample pretreatment, only 1.0 μl of sample per determination, no correction for viscosity differences between sample and standard solutions, and is not subject to ionic or organic interference. The average recovery of added zinc in serum is 97.5% and in urine is 97.6%. The values obtained for serum (mean ± SD: 94.6 ± 11.0 μAg /100 ml ; N = 25) and urine (range: sol 600–1000 μg 24 hr ; N = 4) are comparable to the values reported in the literature. The coefficient of variation was less than 5.0% in all cases. The qualitative concentration limit was 0.009 μg 100 ml . The techniques and instrumentation described are also applicable to a number of trace minerals of common interest.

Pycnodysostosis: A case report of a child with associated trisomy X

A patient with pycnodysostosis has been followed for 18 years. All the diagnosticpitfalls have been observed. Characteristic clinical findings include short stature, deficiencies in distal phalanges which may progress, dense bones with propensity to fracture, and many minor bone anomalies. This patient also has trisomy X. The nature of the metabolic defect in pycnodysostosis has been shown to be one of decreased accretion coupled with decreased resorption.

Radiolucent foreign body demonstrated by sinogram.

To the Editor:— Positive contrast radiography through the use of the sinogram is a useful tool for demonstrating the presence and extent of sinus tracts, particularly when associated with chronic osteomyelitis. 1 So far as we know this technique has not been popularized as a means of locating radiolucent foreign bodies as in the following case. Report of a Case:— A 12-year-old white boy entered Columbus Childrens Hospital on Oct 23, 1967, complaining of two draining sinuses on the plantar surface of the left foot (Fig 1). Three months prior to admission the patient drove a splinter into the foot while walking on a wooden floor in the dark. The wound of entry was on the plantar surface between the fourth and fifth toes. He removed a 2-inch splinter. The following day the patient was evaluated at a local emergency room and received orally administered penicillin and had warm soaks