Search PubMed⌕ Search

Biomedical subjects

P L Zharkov

Publications and source records attributed to P L Zharkov.

At least 19 recordsLinked to original sources
PubMed2000

[Problems in the radiologic diagnosis of osteogenic sarcoma].

Osteogenic sarcoma showing the signs of acute osteolytic process were hardest to diagnose. Since-reliable diagnosis depended on detection of neoplastic osteogenesis in involved bone, tomography proved to be of vital importance. Differential diagnosis was instrumental in dealing with osteolytic giant-cells and osteomyelitis. Diagnosis cannot be considered complete until histological examination is carried out. Whenever neoplastic osteogenesis is suspected, samples must be taken from relevant sites.

Adolescent↗
PubMed1989

[Configuration of the cervical part of the spinal column in various age periods].

In order to estimate pathological deformities of the spinal column, it is necessary to know its normal configuration during various age periods. For this 240 men and women in age groups from 15 up to 60 years and older, having not any complaints, have been investigated. Each patient is subjected to a standard x-ray examination of the cervical part of the spinal column in 2 projections with a subsequent roentgenography In the roentgenograms (lateral projection) angles between ventral bodies CII and CVII are measured, as well as angles in every segment. Indices of the cervical lordosis for every age group in men and women are estimated. The form of the cervical part of the spinal cord in men and women is not equal and changes in different age periods. During the middle age lordosis decreases both in men and women and again increases in the elderly age.

Adolescent↗
PubMed1984

[Neurologic and x-ray aspects of osteochondrosis and diskosis (khondrosis) of the spine].

A certain disparity between the neurological and pathomorphological manifestations of osteochondrosis is reviewed. The authors substantiate the necessity of dividing the dystrophic process in the motor lumbar segment into two phases: 1) the involvement of the disk alone ( diskosis or chondrosis ) and 2) the involvement of both disk and adjacent vertebrae (osteochondrosis). The roentgenological diagnosis of these pathological phases is offered. The question of differentiating the mechanical injuries to the intervertebral disk from osteochondrosis is discussed.

Cervical Vertebrae↗
PubMedDate not supplied

[Flexion-extension movements in the adult thoracic spine].

The flexion-extension mobility of the thoracic spine was studied by examining 120 patients who had no complaints about the thoracic spine. Its quantitative characteristics that assess the contribution of some segments to the movements of the thoracic spine were developed. Sexual differences of the developed quantitative characteristics of the motor function of the thoracic spine were defined. The specific features of changes in the motor function were analyzed in adult females and males.

Adolescent↗
PubMedDate not supplied

[Factors influencing the results of osteodensitometry in searching for systemic osteoporosis].

Osteodensitometry (ODM) performed in 485 persons aged 15 to 83 years, referred for ODM due to their having various causes, has demonstrated a significant reduction in bone density in both males and females above 50 years of age. The density of each vertebra individually in patients without cancer and inflammation of the spine is different, even in youth. The difference between the density of the bodies of individual vertebra increases with age. The vertebral density difference is particularly great in osteoplastic metastases. All the processes accompanied by osteogenesis or calcification both within and around the bone increase ODM values excessively. ODM values are decreased by not only osteoporosis, but also by any other bone destruction (tumorous, inflammatory, non-inflammatory), the increased area of a portion under study due to neoplasia of an immature bone, and by intestinal gas at the level of lumbar vertebrae. The older the patient is, the more factors distorting the results of ODM are. The role of each factor is reflected in the present communication. Not only the densitometric, but also X-ray patterns of the area under study should be taken into account to give an objective and final assessment of a specific situation.

Absorptiometry, Photon↗
PubMedDate not supplied

[Diagnosis of dystrophic lesions of the muscular and ligamentous tendons].

The authors presented the results of investigations of the humoral, ulnar, hip, knee joints and calcanei in 4140 patients. Histology has shown that calcifications and ossifications at the sites of tendon fixation are localized in tendons. The substitution of tendinous tissue for a bone results from calcareous dystrophy. Three stages can be singled out: (I) the substitution of a tendon portion for a fibrillar cartilage; (II) the calcification of a cartilage; (III) the substitution of a calcified cartilage for a newly developed spongy bone. According to the preliminary data, similar changes can bep6 observed in ligaments, too. The clinical and x-ray examination have shown the frequency of tendinous and ligamentous lesions (tendinosis and ligamentosis) of different sites. They were shown to be pathology that may not be accompanied by pains. The appearance of the pain syndrome means the development of disease.

Humans↗
PubMedDate not supplied

[Differential x-ray diagnosis of tendinosis in the region of the greater trochanter of the femur and coxarthrosis and tubercular trochanteritis].

The paper is concerned with the findings of examination of 1132 patients with complaints of pains in the hip joint. The cause of the pain symptoms was found on clinical and x-ray examination. In 28.8% the pain syndrome in the hip joint and disorder of its locomotor function were determined by tendinosis in the greater trochanter. Three stages in the development of a process were singled on the basis of morphological investigations: (I) the substitution of a part of the tendon for a fibrillar cartilage (roentgenonegative); (II) calcification of a fibrillar cartilage; (III) the development of a new spongy bone at the site of a calcified cartilage. Stages II and III have a clear x-ray image and are easily diagnosed. These signs differentiate tendinosis from coxarthrosis and tuberculous trochanteritis.

Adult↗