Kyphosis: Causes, Symptoms & Treatment
Kyphosis refers to an excessive outward curvature of the thoracic spine, commonly known as a rounded back. It can cause pain, postural problems, and reduced mobility.
Things worth knowing about "Kyphosis"
Kyphosis refers to an excessive outward curvature of the thoracic spine, commonly known as a rounded back. It can cause pain, postural problems, and reduced mobility.
What is Kyphosis?
Kyphosis is a spinal condition characterized by an exaggerated forward rounding of the upper back. While a slight natural curve in the thoracic spine is normal, kyphosis is diagnosed when the curvature exceeds approximately 40 to 45 degrees. The condition can be either postural (caused by poor posture habits) or structural (caused by abnormal changes in the vertebrae). Kyphosis can affect people of all ages, from adolescents to the elderly.
Causes
Kyphosis can arise from a variety of causes:
- Postural kyphosis: The most common type, resulting from prolonged slouching, sedentary behavior, and weak back muscles. Frequently seen in children, teenagers, and office workers.
- Scheuermann disease: A structural condition in which vertebrae develop a wedge-shaped deformity during growth, causing a rigid curve in the upper or mid back.
- Osteoporosis: Age-related bone loss can lead to vertebral compression fractures, resulting in a forward curvature of the spine, particularly in older adults.
- Muscular imbalances: Weak back extensor muscles combined with tight chest muscles contribute to a rounded posture.
- Degenerative disc disease: Age-related wear and tear of spinal discs and joints can worsen the natural thoracic curve.
- Neuromuscular conditions: Disorders such as muscular dystrophy or cerebral palsy can affect spinal alignment.
Symptoms
The severity of symptoms depends on the degree of curvature and the underlying cause. Common symptoms include:
- Visibly rounded or hunched upper back
- Back and neck pain, especially in the thoracic region
- Muscle stiffness and tension
- Reduced range of motion in the spine
- Fatigue associated with maintaining poor posture
- Breathing difficulties in severe cases due to restricted lung expansion
- Numbness or tingling in the arms if nerve compression is present
Diagnosis
Diagnosis of kyphosis typically involves a combination of physical examination and imaging:
- Physical examination: The physician assesses the patient posture in standing and during forward bending. The Adams forward bend test helps differentiate structural from postural curves.
- X-ray imaging: Allows precise measurement of the kyphotic angle using the Cobb method and evaluation of vertebral shape.
- MRI or CT scan: Used when disc herniation, nerve compression, or degenerative changes are suspected.
- Bone density scan (DXA): Ordered when osteoporosis is considered a contributing factor.
Treatment
Treatment is tailored to the cause, severity, and age of the patient:
Conservative Treatment
- Physiotherapy: Targeted strengthening of the back muscles, stretching exercises, and posture training are the cornerstone of treatment for postural kyphosis.
- Physical activity: Swimming, Pilates, yoga, and back-strengthening sports help build core muscle strength and promote upright posture.
- Bracing: In adolescents with Scheuermann disease, wearing an orthopedic brace can slow the progression of the curvature during growth.
- Pain management: Analgesics and anti-inflammatory medications relieve acute discomfort; heat therapy and physiotherapy complement treatment.
- Osteoporosis treatment: Bisphosphonates, calcium, and vitamin D are used when osteoporosis is the underlying cause.
Surgical Treatment
Surgery is reserved for severe structural curves (typically exceeding 70 degrees) or cases with significant neurological complications. The procedure, known as spinal fusion, corrects and stabilizes the spinal alignment using rods and screws.
Prevention
Many cases of postural kyphosis can be prevented or delayed through proactive measures:
- Regular physical activity and exercise as part of daily life
- Ergonomic workplace setup (chair height, monitor position, desk posture)
- Conscious posture training and regular movement breaks
- Avoiding prolonged uninterrupted sitting without postural correction
- Adequate intake of calcium and vitamin D to support bone health
References
- Scheuermann, H.W. (1921): Kyphosis dorsalis juvenilis. Ugeskr Laeger, 82, 385-393.
- Bradford, D.S. et al. (1994): Scheuermann kyphosis. Results of surgical treatment by posterior spinal arthrodesis in twenty-two patients. Journal of Bone and Joint Surgery, 77(10), 1532-1540.
- Glassman, S.D. et al. (2005): The impact of positive sagittal balance in adult spinal deformity. Spine, 30(18), 2024-2029.
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