Thoracic Kyphosis: Causes, Exercises, and Treatment

Thoracic kyphosis

Thoracic kyphosis is a pathological accentuation of the physiological curve of the thoracic spine. While a slight dorsal curvature (20-45° Cobb) is completely normal and necessary for load distribution, hyperkyphosis is diagnosed when the angle exceeds 45-50°. This condition affects approximately 20-40% of the elderly population and can manifest at any age, from adolescence to old age.

Hyperkyphosis is not just an aesthetic problem: it can cause back pain, breathing difficulties, functional limitation, and, in severe cases, compression of nervous structures. The good news is that, in most cases, a targeted program of postural exercises and physiotherapy can significantly improve the curvature and associated symptoms.

Anatomy of the Thoracic Spine

The spine presents four physiological curves when viewed from the side:

• Cervical lordosis: posterior concavity in the cervical region
• Thoracic kyphosis: posterior convexity in the thoracic region (12 vertebrae, from T1 to T12)
• Lumbar lordosis: posterior concavity in the lumbar region
• Sacral kyphosis: posterior convexity at the level of the sacrum

These curves work in synergy to distribute axial loads, absorb impacts, and maintain the body’s center of gravity in balance. Physiological thoracic kyphosis measures between 20° and 45° according to the Cobb angle. Values above this define hyperkyphosis.

Thoracic vertebrae have unique characteristics:

• Vertebral bodies slightly wedge-shaped (taller posteriorly)
• Costovertebral joints connecting the ribs to the spine, limiting mobility but increasing stability
• Intervertebral discs thinner than in the lumbar region
• Spinal extensor muscles (erector spinae, multifidus) that counteract the tendency to flexion

Types of Kyphosis

Postural Kyphosis

This is the most common form, especially among adolescents and young adults. It does not present structural alterations of the vertebrae: the curvature is due to prolonged incorrect posture (shoulders forward, head protruded). It is completely correctable with voluntary straightening and responds very well to exercises.

Scheuermann’s Kyphosis

Scheuermann’s disease is a structural kyphosis of adolescence caused by an anomaly in the growth of the vertebral bodies. It is characterized by the wedging of at least 3 contiguous vertebrae (>5° each). It is more rigid than postural kyphosis and does not completely correct with voluntary extension. It affects 4-8% of adolescents.

Degenerative (Senile) Kyphosis

Typical of the elderly, it is caused by intervertebral disc degeneration, osteoporosis with vertebral compression fractures, and sarcopenia (loss of muscle mass). It affects up to 40% of women over 75.

Post-traumatic Kyphosis

Results from vertebral fractures (due to trauma or osteoporotic fragility) that cause anterior collapse of the vertebral body, creating a wedge-shaped deformity.

Congenital Kyphosis

Rare, present at birth due to defects in vertebral formation or segmentation. Often requires early surgical treatment.

Causes and Risk Factors

Main Causes

• Chronic incorrect posture: prolonged use of smartphones and computers, sedentary work positions with shoulders forward
• Scheuermann’s disease: vertebral growth anomaly in adolescence
• Osteoporosis: causes vertebral compression fractures, responsible for senile hyperkyphosis — the so-called “widow’s hump”
• Disc degeneration: with aging, discs lose height, especially anteriorly
• Sarcopenia: loss of strength in the back extensor muscles no longer counteracts gravity

Risk Factors

• Advanced age: hyperkyphosis increases by 2-3% per decade after 40 years
• Female gender: higher prevalence of post-menopausal osteoporosis
• Sedentary lifestyle: muscle weakness accelerates progression
• Smoking: reduces bone density and quality of connective tissues
• Family history: especially for Scheuermann’s disease
• Activities with cyclic flexion loading: rowers, cyclists (adaptive curvature)
• Associated scoliosis: combined kyphoscoliotic deformity

Symptoms

Early Symptoms

• “Stooped” appearance: rounded shoulders forward, protruded head, prominence of the upper dorsal region
• Feeling of stiffness in the thoracic region, especially in the morning
• Muscle fatigue in the interscapular and cervical region after prolonged standing
• Back pain: dull pain between the shoulder blades

Advanced Symptoms

• Persistent pain in the thoracic and cervical region due to compensation
• Breathing difficulties: severe kyphosis reduces thoracic cage volume — studies show a reduction in forced vital capacity of up to 10% for every 10° of hyperkyphosis beyond 55°
• Gastroesophageal reflux: abdominal compression can promote it
• Functional limitation: difficulty looking up, driving, reaching high shelves
• Cascading postural imbalances: compensatory cervical and lumbar hyperlordosis, alterations of the pelvis
• Psychological impact: many patients report aesthetic discomfort and reduced self-esteem

When to Be Concerned

Consult a doctor urgently in case of:

• Rapidly progressing kyphosis
• Severe pain unresponsive to medication
• Weakness or tingling in the lower limbs (spinal cord compression)
• Difficulty controlling bladder or bowel (surgical emergency)

Diagnosis

Clinical Examination

• Lateral inspection: evaluation of the dorsal curve, global sagittal alignment (plumb line from C7)
• Adam’s test: forward flexion of the trunk to assess curve rigidity — in postural kyphosis the curve corrects, in structural kyphosis it persists
• Mobility assessment: dorsal extension, rotation, lateral flexion
• Neurological examination: reflexes, strength, and sensation of the lower limbs
• Muscle strength assessment: spinal extensors, scapular stabilizers

Imaging

• Full spine X-ray (standing, lateral view): measurement of Cobb angle, assessment of vertebral wedging, any compression fractures
• Magnetic Resonance Imaging (MRI): indicated in case of neurological symptoms to evaluate the spinal cord and nerve roots
• DEXA scan: bone densitometry in elderly patients to assess osteoporosis
• CT scan: useful for surgical planning or to evaluate congenital bone anomalies

Classification by Severity

Conservative Treatment

Physiotherapy

Physiotherapy is the first-choice treatment for most hyperkyphoses. The objectives are:

• Improve extension mobility of the thoracic region
• Strengthen spinal extensor muscles and scapular stabilizers
• Correct compensations at the cervical and lumbar levels
• Educate the patient on postural awareness

Clinical studies show that a specific exercise program of 3-6 months can reduce the kyphosis angle by 5-15° and significantly improve pain and quality of life.

Manual Therapy Techniques

Manual therapy is particularly useful for:

• Mobilization of costovertebral joints and dorsal facet joints
• Mobilization of soft tissues (shortened pectorals, thoracolumbar fascia)
• Muscle energy techniques to improve segmental mobility

Brace

In skeletally immature patients (Scheuermann’s disease with a curve >60°), a brace (Milwaukee or Kyphologic type) may be indicated to prevent progression. It must be worn 18-23 hours a day and always combined with exercises.

Exercises for Thoracic Kyphosis

The thoracic spine is a 12-vertebra region (T1-T12) in the mid-back that naturally curves backward (kyphosis 20-45°), stabilized by ribs and smaller discs, supporting the chest while limiting mobility. A complete program should include the following categories of exercises, to be performed 4-5 times a week. It is essential that the program is personalized by your doctor or physical therapist.

1. Thoracic Extension Mobilization

• Extension on foam roller: place a foam roller transversally under the thoracic spine. With hands behind the head, extend the trunk backward over the roller. Hold for 5 seconds, repeat 10 times, moving the roller to different vertebral levels.
• Modified cat-cow: on all fours, focus the extension movement specifically on the thoracic region, “opening” the sternum towards the floor. 15 repetitions.
• Prone extension: from prone, arms along the sides, lift the chest off the floor keeping the gaze downwards. 3 sets of 10.

2. Strengthening of Spinal Extensors

• Modified Superman: from prone, simultaneously lift arms and legs, holding the position for 5 seconds. 3 sets of 8-10.
• Prone dumbbell row: from prone on an inclined bench, perform a rowing movement bringing the shoulder blades together. 3 sets of 12.
• Seated extensions with resistance band: band fixed forward at chest height, pull backward bringing the shoulder blades together. 3 sets of 15.

3. Strengthening of Scapular Stabilizers

• Scapular retraction: standing or prone, bring the shoulder blades together and downwards (“put your shoulder blades in your back pockets”). Hold for 5 seconds, 15 repetitions.
• Y-T-W-L raises: from prone, perform the sequence of arm movements forming the letters Y, T, W, and L. 2 sets of 8 for each position.
• Face pull with resistance band: pull the band towards the face with hands in supination, externally rotating the shoulders. 3 sets of 15.

4. Stretching of Shortened Muscles

Stretching is essential to lengthen the muscles that maintain the kyphotic posture:

• Pectoral stretch: in the corner of a wall, arms at 90° resting on both walls, lean forward with the torso. Hold for 30 seconds, 3 repetitions.
• Upper trapezius and scalene stretch: lateral inclination of the head with the opposite hand gently pulling. 30 seconds per side.
• Abdominal stretch: Cobra pose (Bhujangasana), extend the trunk keeping the pelvis on the ground. 30 seconds.

5. Breathing Exercises

• Diaphragmatic breathing: kyphosis limits thoracic expansion. Deep breathing exercises with emphasis on lateral and posterior rib expansion. 5 minutes a day.
• Breathing with a stick: arms raised above the head with a stick, inhale expanding the chest. 10 repetitions.

Ergonomics and Prevention

Posture at Work

• Monitor at eye level: the top edge of the screen should be at eye level
• Chair with lumbar support: maintain physiological curves
• Active breaks: every 30-45 minutes stand up and perform dorsal extensions
• Smartphone: avoid “text neck” posture — bring the phone to eye level

Recommended Physical Activity

• Swimming (backstroke): excellent for strengthening extensors
• Pilates and yoga: improve mobility and postural awareness
• Climbing: strengthens the posterior chain
• Walking with poles (nordic walking): promotes dorsal extension

Osteoporosis Prevention

In post-menopausal women and the elderly, preventing vertebral fractures is crucial:

• Weight-bearing activities: walking, dancing, weight exercises
• Calcium and vitamin D intake: according to doctor’s instructions
• Pharmacological therapy: when indicated by the specialist

When Surgery is Necessary

Surgical intervention is reserved for a minority of cases (less than 5%) and is considered when:

• Kyphosis greater than 75-80° with documented progression
• Severe pain unresponsive to 6-12 months of conservative treatment
• Neurological deficits due to spinal cord compression
• Significant respiratory impairment
• Aesthetically unacceptable deformity for the patient (at their request)

Surgical Techniques

• Posterior vertebral fusion with pedicle screws and rods: this is the most commonly used technique
• Corrective osteotomies: in cases of rigid kyphosis, bone cuts are performed to allow correction
• Vertebroplasty/kyphoplasty: in osteoporotic fractures, bone cement is injected into the collapsed vertebral body to stabilize it and reduce pain

Post-operative rehabilitation requires 6-12 months and includes an initial period with a brace followed by a progressive muscle strengthening program.

Prognosis

The prognosis depends on the type and severity of kyphosis:

• Postural kyphosis: excellent response to physiotherapy, almost complete correction in most cases
• Scheuermann’s: good response to bracing if treated before skeletal maturity; in adults, exercises improve symptoms even if the structural deformity persists
• Degenerative kyphosis: progression can be slowed but rarely reversed; the goal is pain control and maintenance of functionality
• Post-fracture: early kyphoplasty can prevent accentuation of the curve

Frequently Asked Questions (FAQ)

Frequently Asked Questions

Can thoracic kyphosis be completely corrected?

The potential for complete correction of thoracic kyphosis depends significantly on its underlying type and severity. Postural kyphosis, common in young adults, is often correctable through targeted exercises and postural awareness. Structural forms, such as Scheuermann’s or degenerative kyphosis, typically focus on management, symptom reduction, and preventing progression rather than full correction.

How long does it take to see improvements with exercises?

The timeframe for observing improvements with exercises for thoracic kyphosis can vary based on individual factors, consistency, and the specific type of kyphosis. Initial improvements in posture and symptom reduction may be noticed within several weeks to a few months of consistent engagement with a prescribed exercise program. Long-term adherence is crucial for sustained benefits and preventing recurrence.

Is a brace useful for adults with kyphosis?

The utility of a brace for adults with thoracic kyphosis is primarily for support and pain management, rather than significant structural correction. While braces are sometimes used in adolescents to guide spinal growth, their role in adults is generally limited to providing postural assistance or reducing discomfort. A physical therapist can assess if a brace might offer symptomatic relief in specific adult cases.

Does kyphosis worsen with age?

Thoracic kyphosis can indeed worsen with age, particularly due to degenerative changes in the spine. Factors such as disc degeneration, osteoporosis, and loss of muscle mass contribute to the progression of spinal curvature in older adults. Regular physical activity and bone health management are important strategies to mitigate this progression.

Sources and Scientific References

1. Sepehri S et al. (2024). The effect of various therapeutic exercises on forward head posture, rounded shoulder, and hyperkyphosis among people with upper crossed syndrome: a systematic review and meta-analysis. BMC Musculoskelet Disord. 25:105. DOI | PubMed
2. Hannink E et al. (2022). Does thoracic kyphosis severity predict response to physiotherapy rehabilitation in patients with osteoporotic vertebral fracture? A secondary analysis of the PROVE RCT. Physiotherapy. 115:85-92. DOI | PubMed
3. Sardar ZM et al. (2019). Scheuermann’s Kyphosis: Diagnosis, Management, and Selecting Fusion Levels. J Am Acad Orthop Surg. 27:e462-e472. DOI | PubMed
4. González-Gálvez N et al. (2019). Effects of exercise programs on kyphosis and lordosis angle: A systematic review and meta-analysis. PLoS One. 14:e0216180. DOI | PubMed
5. You MJ et al. (2024). Effectiveness of Physiotherapeutic Scoliosis-Specific Exercises on 3-Dimensional Spinal Deformities in Patients With Adolescent Idiopathic Scoliosis: A Systematic Review and Meta-analysis. Arch Phys Med Rehabil. 105:2375-2389. DOI | PubMed