Legg-Calve-Perthes disease (LCPD) is an osteochondropathy characterized by the first stage of interruption of blood supply to the femoral head, which causes its dystrophy and subsequent destruction. It is most often observed in children and adolescents aged 2-12 years, with a maximum incidence at 4-8 years. This condition leads to pain in the hip and knee, limited movement, and can cause joint deformity and osteoarthritis at a later age. The pathology occurs in several stages: from primary vascular change to recovery from destruction and bone remodeling. These processes determine both the clinical manifestations of the disease and its outcome.
History of the disease and interesting historical facts
Legg-Calve-Perthes disease was first described in 1910 by physician Gustav Legg and later by two other researchers, giving the disease its name. In total, three key figures have been recorded in the scientific literature as having made significant contributions to the understanding of this pathology. Interestingly, throughout the 20th century, there were different views on the etiology of the disease, including theories about the influence of infections and metabolic disorders, but over time, the main emphasis shifted to the mechanisms of vascular disorders. In the 1960s, research began on genetic factors, which led to an understanding of the hereditary predisposition to LCPD.
Epidemiology
The prevalence of Legg-Calve-Perthes disease varies by geographic region and race. According to epidemiological studies, the incidence ranges from 1 to 30 cases per 100,000 children per year. The pathology is most common in whites, less common in black and Hispanic children. Notably, the disease is observed in boys 4-5 times more often than in girls. Recent studies also indicate a possible increase in the incidence of LCPD among overweight children, which may be associated with changes in lifestyle and physical activity.
Genetic predisposition to this disease
Some studies suggest a possible genetic predisposition to Legg-Calve-Perthes disease. The genes involved and the mutations that lead to this pathology remain the subject of active research. Discovered mutations in genes associated with osteogenesis and vascular development may increase the likelihood of developing LCPD. The focus is on genes responsible for the regulation of vascular tone and bone growth, although no specific genetic markers have been confirmed as key risk factors at this time.
Risk factors for the development of this disease
Risk factors for the development of the disease include both physical and chemical ones. Research shows that:
- Overweight and obesity may serve as significant predictors of the development of LCPD;
- lack of physical activity also becomes a significant factor;
- high loads on joints, especially in a children's gym, contribute to an increase in injuries;
- Environmental influences and possible toxic substances can have a negative impact on skeletal development.
There is also a connection between the disease and some chronic diseases, such as blood diseases and endocrine disorders.
Diagnosis of this disease
The diagnosis of LCPD includes an assessment of clinical symptoms, as well as the use of radiological examination methods. The main symptoms of the disease are:
- Pain in the hip and knee area;
- Limited joint mobility;
- Thigh muscle atrophy;
- Pathological lameness.
Laboratory tests are usually not specific for LCPD but may include a complete blood count to evaluate for inflammatory processes. Radiological examinations such as X-rays, which allow one to see changes in the femoral head, are the main diagnostic method. They may be followed by additional methods such as MRI and CT, to evaluate the degree of destruction and subsequent changes. Differential diagnosis includes exclusion of other causes of joint pain, such as infectious and neoplastic processes.
Treatment
Treatment of LCPD requires a comprehensive approach and may include conservative and surgical methods. The main treatment areas are:
- General treatment is aimed at reducing pain and restoring joint function;
- Pharmacological treatment includes nonsteroidal anti-inflammatory drugs and, if necessary, the use of analgesics;
- Surgical treatment is used in cases of severe deformities or lack of progress with conservative therapy;
- Other treatments, such as physical therapy and exercise therapy, are also important for successful rehabilitation.
List of medications used to treat this disease
The most commonly used drugs include:
- Ibuprofen;
- Naproxen;
- Diclofenac;
- Paracetamol for pain;
- In some cases, corticosteroids.
Disease monitoring
Disease monitoring involves regular follow-up visits after treatment has begun to assess its effectiveness and prevent complications. The prognosis is generally good, but may depend on the extent of femoral head involvement. Complications may include osteoarthritis, femoral deformity, and permanent mobility problems.
Age-related features of the disease
Legg-Calve-Perthes disease has different manifestations depending on the age group. In children aged 2-4 years, symptoms may be less pronounced, while in children aged 6-12 years, more severe clinical manifestations are observed with pronounced pain and limited movement. In older age, the disease may be accompanied by already formed degenerative changes.
Questions and Answers
- What is Legg-Calve-Perthes disease? - This is an osteochondropathy characterized by the destruction of the head of the femur in children as a result of impaired blood supply.
- What are the main symptoms of LCPD? — The main symptoms include pain in the hip and knee, limited movement and lameness.
- How is LCPD diagnosed? — Diagnosis includes clinical symptoms and radiological examination, such as X-ray.
- What is the treatment for LCPD? — Treatment can be conservative (FPVP, physiotherapy) or surgical, depending on the severity of the disease.
- What is the prognosis for the disease? — The prognosis is generally favorable, but depends on the stage of the disease and the treatment methods used.
Dr. Oleg Korzhikov notes that "it is very important to monitor the physical activity of children, especially those involved in sports. Regular medical examinations will help in early diagnosis and treatment of the disease. If pain appears in the hip or knee, especially after physical activity, immediately consult a specialist. It is important to understand that timely intervention is the key to successful recovery."
