Hyperosteogeny

Hyperosteogeny is a disease in which pathological bone hyperplasia causes impaired movement of local joints, muscles and ligaments, mainly accompanied by pain. It can occur in the cervical spine, lumbar spine, joints and calcaneus, including hypertrophic spondylitis, hypertrophic osteoarthropathy and calcaneal spur. It favors middle-aged and elderly people over 40 and workers doing heavy loading or prolonged standing or sitting, mainly affecting joints with large range of motion and the spine. The cause is unknown and is mostly categorized as age-related degenerative change; many hypotheses exist, including mechanical, functional, vascular, metabolic and endocrine theories. The basic view is that onset occurs on an internal basis triggered by external factors. Western medicine uses non-hormonal anti-inflammatory analgesics, physical therapy and surgery, which relieve symptoms to some extent, but no specific effective therapy exists.

Common Symptoms

Spinal degeneration; lower-limb weakness; fatigue; spinal bony changes; neuralgia; lumbar spur; stiff painful numb index and middle fingers; worn bone with osteophyte hyperplasia; neck and back pain; heel spur

Causes

Irregular cartilage damage, subchondral sclerosis and cysts in weight-bearing areas, marginal osteophyte hyperplasia, increased metaphyseal blood flow and synovitis of varying degree. Currently no effective drug exists and symptomatic treatment is usual. Early stage: fibrillation of cartilage surface, chondrocyte proliferation, longitudinal cracks and crystal deposition, with cartilage repair and osteophyte hyperplasia; late stage: complete cartilage destruction shown as sclerosis, loss of cartilage and focal subchondral necrosis. Cartilage extensibility, pressure and shear resistance and permeability decrease; water increases with over-swelling and subchondral sclerosis; proteoglycan content falls with changed molecular size and aggregation, and collagen fiber size, arrangement and matrix synthesis/degradation become abnormal. Nutrition: the root cause is calcium deficiency and a result of stress reaction. In TCM it belongs to the bi syndrome, also called bone bi, related to trauma, strain, blood stasis obstructing collaterals, wind-cold-damp, phlegm-damp, and liver-kidney deficiency. Cervical hyperosteogeny: age, chronic strain, trauma, pharyngeal inflammation, developmental stenosis, congenital cervical deformity, metabolic and mental factors. Lumbar hyperosteogeny by time: stage 1 hidden phase, with hyperplasia only 1-2 mm thick, no functional effect and no obvious symptoms, lasting 1-2 years. Stage 2 obvious phase, hyperplasia over 5 mm clearly affecting movement; intervertebral growth tilts the body and causes aching, pain and numbness on the affected side; without radical treatment it may last years and progress. Stage 3 paralysis or motor impairment, with multiple hyperplasia sites over 10 mm and long untreated cases causing paralysis or difficulty walking, which is clinically rare. By shape: 1. Bulging, commonest, with thickened outer bone bulging, called disc bulging/protrusion. 2. Angular hyperplasia, horn-like upward spurs at disc margins, most likely to cause severe symptoms, usually in cervical/lumbar discs. 3. Columnar hyperplasia at highly mobile small joints such as finger and knee; local symptoms are mild, but some have 20 mm lumbar columns causing severe impact. 4. Granular excrescences at the thumb-palm joint, 4-6 mm spherical bodies outside the joint gap, impairing finger function and strength; also seen at the knee. Knee hyperosteogeny: 1. Trauma changes the knee weight-bearing axis, reducing effective load area, uneven loading and cartilage damage at impact points with microfractures (sub-fracture), bone collapse and subchondral sclerosis; matrix and synovial fluid change, losing elasticity and lubrication, making cartilage wear; osteophytes are a repair to increase load area. 2. Autoimmune reaction: after mechanical damage, hidden antigens of chondrocytes, mucopolysaccharides and collagen expose, causing secondary cartilage damage; knee swelling and recurrent synovitis with increased monocytes, immunoglobulins and complement indicate an autoimmune basis. Heel hyperosteogeny is a normal physiological degeneration and protective reaction; it appears gradually after 40, earlier in high-load joints, especially the lumbar spine, lower limbs and heel.

Treatment

Medication, physical therapy

Prevention

Daily prevention: 1. Avoid prolonged strenuous exercise, which unevenly loads bone and soft tissue and causes hyperosteogeny. 2. Exercise moderately: avoiding strenuous exercise does not mean no exercise; moderate exercise is ideal, because joint cartilage nutrition comes from synovial fluid that enters cartilage only by squeezing; appropriate joint movement increases intra-articular pressure, promoting fluid permeation and reducing cartilage degeneration. Thus rehabilitation lies in exercise, relieving pain and dysfunction and restoring living and working ability. Health education: 1. Treat joint injuries promptly; intra-articular fracture often causes hyperosteogeny, and anatomic reduction can prevent traumatic arthritis. 2. Reduce weight: excess weight accelerates cartilage wear and uneven loading. With current understanding, avoiding strenuous exercise, moderate daily exercise, prompt treatment of injury and weight control can prevent hyperosteogeny.

Recommended Department

It is recommended to visit the orthopedic surgery department; before the visit you may first book an appointment and connect with experts through this platform.

Warm reminder: The above information is provided for health education reference only and cannot replace professional medical diagnosis. If you have related symptoms, please seek care at a regular hospital in time.