General principles and history of present illness
The primary task of the physician when collecting anamnesis morbi is to separate secondary and false information from the reliable clinical picture. The specialist does not conduct an investigation; their priority is the most effective assistance to the victim. At the same time, it is necessary to regularly compare complaints with objective manifestations; in case of any discrepancies, the interview is conducted again.
If the patient is unconscious or suffers from retrograde amnesia (which is typical for traumatic brain injuries), information is obtained from ambulance personnel, police, eyewitnesses, or relatives.
Circumstances and mechanism of injury
Finding out what and where happened helps determine the severity of the condition and narrow down the range of likely diagnoses. There are two main mechanisms of musculoskeletal system injury:
- Direct mechanism. The area of tissue destruction anatomically corresponds to the site of force application. A classic example is a "bumper fracture", when both bones of the leg break at the same level from a direct hit by a car part.
- Indirect mechanism. The trauma occurs at a considerable distance from the point of physical impact. For example, a fracture of the surgical neck of the humerus often occurs when falling onto the hand of an abducted arm.
Understanding typical mechanisms protects the physician from errors. If a person fell from a great height and landed on their feet, one should look for associated injuries of the calcaneus and spine. A driver during sudden braking often gets a "whiplash" injury of the cervical spine. In addition, accurate documentation of circumstances has medico-legal significance when processing traffic accidents and industrial accidents.
Time factor and preceding care
The exact date and hours of the incident are important for assessing the dynamics of the condition. For example, the rate of swelling progression (lightning-fast in half an hour or gradually over a week) indicates the nature of internal blood loss and the severity of soft tissue damage. Time critically affects surgical tactics: if more than two weeks have passed, the opportunities for closed reduction of dislocations, closed reduction of bone fragments, or primary repair of nerve trunks and tendons are sharply limited.
It is necessary to assess what care the victim received before admission to the hospital:
- Adequate care (proper splinting, timely reduction) can almost completely relieve pain and alter complaints.
- First aid errors lead to early complications. A tight bandage disrupts blood flow and innervation, the growing edema beneath it provokes the appearance of epidermal blisters (phlyctenae), and poor immobilization often leads to skin perforation by the sharp edge of the bone from the inside.
Features of life history
When collecting anamnesis vitae, in addition to standard questions, the orthopedic traumatologist focuses on factors affecting bone tissue quality and its regenerative capacity. Special attention is paid to:
- Systemic diseases. Diabetes mellitus, thyrotoxicosis, tuberculosis, and collagenoses impair reparative processes.
- Hormonal background. Pregnancy, menopause, and the use of hormonal medications affect bone density.
- Bad habits. Regular alcohol consumption increases the risk of developing osteoporosis, as well as mental and neurological disorders.
- Past injuries and lifestyle. The physician evaluates the functional consequences of old fractures, as well as working and athletic conditions that can lead to constant microtraumatization.
Briefly: answers to topical questions
What are the absolute signs of a bone fracture?
Reliable (absolute) signs of a bone fracture include pathological mobility, bone crepitus, and the presence of bone fragments under the skin.
- Pathological mobility — should only be detected spontaneously; artificially eliciting it is unacceptable.
- Bone crepitus — occurs due to the friction of bone fragments against each other.
- Presence of bone fragments under the skin — may be determined as a fragment protruding under the skin.
It is strictly forbidden to deliberately elicit these symptoms, as this causes additional tissue trauma and leads to severe complications.
What types of bone fragment displacement are distinguished in fractures?
According to the mechanism of occurrence, there is primary (from the action of the injuring force) and secondary (from muscle traction) displacement of bone fragments. The main types of displacement:
- Width-wise — ranges from zero degree to complete loss of contact between fragments.
- Angular — easily diagnosed visually by the deformation of the segment axis.
- Rotational — most characteristic of spiral fractures.
- Length-wise — includes displacement with overlapping of fragments and with separation (formation of diastasis).
- Impaction — a variant of length-wise displacement with minimal displacement, occurring in areas of spongy bone.
What risk factors lead to decreased bone density and the development of osteoporosis?
Decreased bone density and the development of osteoporosis are caused by a complex of genetic, age-related, pathological, and iatrogenic risk factors. The main factors include:
- Genetic and age-related factors — specific genotype, advanced age, estrogen deficiency (menopause, postmenopause), and vitamin D deficiency.
- Concomitant diseases — endocrine (diabetes mellitus, thyrotoxicosis), rheumatic, kidney, blood, and digestive system diseases.
- Pathological conditions — prolonged immobilization, muscle dysfunction, anorexia, COPD.
- External factors — systematic alcohol consumption, hormone therapy, and medication intake.
To assess the timing of acute trauma, remember the "Two-Week Rule": after 14 days, closed reduction, repositioning, and primary repair enter the zone of ineffectiveness.
Class and exam questions
Why is it essential to thoroughly investigate the mechanism of injury?
The typical mechanism suggests to the physician which hidden injuries need to be searched for. For example, when falling onto the feet from a height, not only the calcaneus but also the spine are frequently fractured.
What is an indirect mechanism of trauma?
This is a situation where a bone breaks at a considerable distance from the point of force application. A striking example is a fracture of the humerus when falling onto the hand of an outstretched arm.
Why is inadequate transport immobilization dangerous?
Poor limb fixation can lead to secondary fragment displacement and skin perforation by the bone, while excessively tight bandaging leads to impaired blood supply and the formation of blisters (phlyctenae) against the background of edema.
Why is gynecological and endocrinological history important for a traumatologist?
Pregnancy, menopause, diabetes mellitus, and thyroid pathologies directly impair the bone tissue structure and reduce its regenerative potential, which can lead to nonunion of the fracture.
What else to study on this topic
- Medico-legal aspects of documenting the circumstances of occupational injuries
- Differential diagnosis of direct and indirect mechanisms of injury
- Causes of phlyctenae (epidermal blisters) formation in fractures
- Impact of diabetes mellitus and thyrotoxicosis on bone tissue consolidation
- Vascular and nerve complications from improper splint application
Master the entire topic in the "Traumatology" course
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Other topics in the section "General Questions of Traumatology and Orthopedics"
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