Costochondritis

Populations and Risk Factors

Age: Adults aged 20–40 most commonly affected; can occur at any age; Tietze syndrome specifically affects younger adults under 40
Sex: Women more commonly affected than men, with some studies reporting a 2:1 to 3:1 female-to-male ratio
Repetitive upper body loading: Rowing, heavy lifting, repetitive pushing/pulling motions, prolonged computer work with forward posture — cumulative microtrauma to the costosternal junctions
Forceful or prolonged coughing: Upper respiratory infections, chronic bronchitis, pertussis — the violent intercostal contraction during coughing generates repetitive traction on the costochondral junctions
Post-surgical patients: Thoracotomy and median sternotomy disrupt the costosternal articulations directly; post-surgical costochondritis may be chronic
Poor upper body biomechanics: Forward head posture, rounded shoulders, upper crossed syndrome — the altered thoracic mechanics increase stress on the anterior chest wall articulations
Physically active individuals: Athletes in sports requiring repetitive trunk rotation or upper extremity force production (tennis, baseball, volleyball)
Tietze syndrome specifically: Younger adults (typically under 40); affects a single costochondral junction (usually 2nd or 3rd); has visible swelling, distinguishing it from costochondritis

Causes and Pathophysiology

Costosternal junction anatomy: The costosternal joints are the articulations where the costal cartilages of ribs 1–7 connect to the sternum. The costochondral junctions are where the bony rib transitions to the costal cartilage. Both junction types are stabilized by ligaments (radiate sternocostal ligaments) and a fibrous joint capsule. These junctions undergo repetitive mechanical stress with every breath cycle (approximately 20,000 cycles per day) and with all trunk and upper extremity movements that generate force through the thorax. This cumulative loading makes them vulnerable to overuse inflammation.
Inflammation mechanism: The etiology is often idiopathic but is attributed to repetitive microtrauma at the junction — each loading cycle produces microscopic stress at the cartilage-bone or cartilage-sternum interface. When cumulative microtrauma exceeds the tissue's repair capacity, an inflammatory response develops: prostaglandins, cytokines, and bradykinin sensitize local nociceptors, producing pain. The inflammation remains localized to the junction; there is no systemic inflammatory marker elevation, and imaging is normal.
Multiple vs. single junction involvement: Costochondritis typically involves multiple junctions (ribs 2–5 are most commonly affected), with the 2nd and 3rd junctions having the highest incidence. Tietze syndrome affects a single junction with visible swelling — the swelling represents periarticular edema and soft tissue thickening at the involved junction. This single-junction involvement with swelling is the defining distinction.
Pain referral mechanism: The anterior chest wall is innervated by the intercostal nerves (T1–T6 for the affected region). Inflammation at the costosternal junction sensitizes these nociceptors, producing localized pain that may radiate along the intercostal distribution — across the anterior chest wall and occasionally to the shoulder and upper arm. This referred distribution overlaps with cardiac referral patterns (T1–T5 dermatomes), which is why the condition mimics cardiac pain. The critical difference is that costochondritis pain is mechanical (reproduced by palpation and movement) while cardiac pain is visceral (not reproduced by palpation).
Chest pain differential (critical clinical reasoning): Anterior chest pain requires differentiation from cardiac pathology before any musculoskeletal diagnosis is made. Cardiac pain (angina, myocardial infarction) is characterized by substernal pressure or squeezing that radiates to the left arm, jaw, or back; it is associated with shortness of breath, diaphoresis, nausea, and pallor; it is NOT reproduced by palpation; and it is triggered by exertion or stress rather than specific mechanical positions. Costochondritis is characterized by sharp or aching pain localized to specific costosternal junctions that IS reproduced by palpation and aggravated by trunk movement, deep breathing, and upper extremity loading. This distinction is non-negotiable — any chest pain without clearly reproducible musculoskeletal findings requires medical evaluation before massage treatment.
Self-limiting course: Costochondritis typically resolves in 1–3 months with conservative management. Some cases become chronic or recurrent, particularly when contributing biomechanical factors (postural dysfunction, repetitive occupational loading) are not addressed. Tietze syndrome may take longer to resolve due to the periarticular swelling component.

Signs and Symptoms

Costochondritis vs. Tietze Syndrome

Feature	Costochondritis	Tietze Syndrome
Junctions involved	Multiple (typically ribs 2–5)	Single (usually 2nd or 3rd)
Swelling	No visible swelling	Visible localized swelling at the junction
Age	Any age; most common 20–40	Typically under 40
Pain character	Sharp or aching; reproduced by palpation	Sharp; reproduced by palpation; the swelling itself is tender
Course	Self-limiting; weeks to months	May persist longer; swelling resolves slowly

General Findings

Sharp or aching anterior chest wall pain, usually unilateral, localized to one or more costosternal junctions
Pain reproduced by direct palpation of the affected junction — this is the diagnostic hallmark
Pain worsened by deep breathing, coughing, sneezing, and trunk rotation — all of which mechanically stress the costosternal articulations
Pain worsened by upper extremity movements that generate force through the thorax — pushing, pulling, reaching overhead, horizontal adduction
Shallow or guarded breathing pattern to minimize thoracic expansion
No associated shortness of breath, diaphoresis, radiation to the left arm or jaw, nausea, or syncope (cardiac red flags absent)
May be chronic or recurrent when biomechanical contributing factors are not addressed

Assessment Profile

Subjective Presentation

Chief complaint: Sharp or aching pain in the front of the chest, usually on one side — "it hurts right here when I breathe deeply" or "I get a stabbing pain in my chest when I push or lift"; significant anxiety about cardiac disease is common, especially in older adults or those with cardiac risk factors
Pain quality: Sharp, stabbing, or aching; well-localized to specific points on the chest wall; may describe it as "like a knife" at the junction; pain intensity ranges from mild aching to severe enough to limit breathing
Onset: Usually gradual — develops over days to weeks following a period of repetitive upper body activity, prolonged coughing, or postural stress; occasionally acute onset following a specific forceful movement or direct trauma to the chest wall
Aggravating factors: Deep breathing, coughing, sneezing, laughing (thoracic expansion stresses the junctions); trunk rotation and lateral flexion; pushing, pulling, reaching overhead, horizontal adduction (pectoralis contraction loads the costosternal junctions); lying on the affected side; carrying heavy objects
Easing factors: Shallow breathing (reduces junction stress); rest from upper body exertion; anti-inflammatory medication; local heat or ice application; avoiding positions that compress the affected side
Red flags: Chest pain with shortness of breath, diaphoresis, radiation to left arm or jaw, nausea, dizziness, or syncope → suspect cardiac event; emergency referral; do not treat; chest pain not reproduced by palpation → not confidently costochondritis; refer for medical evaluation before treating; chest pain with fever and productive cough → consider pneumonia or pulmonary pathology

Observation

Local inspection: Usually normal appearance in costochondritis; Tietze syndrome shows visible localized swelling at the affected costosternal junction — the swelling is firm, non-fluctuant, and confined to the junction area; no skin discoloration in either condition
Posture: Forward head posture, protracted shoulders, and increased thoracic kyphosis are common contributing factors and are often present; the client may guard the affected side by limiting ipsilateral arm use or holding the arm across the chest to reduce traction on the anterior chest wall; upper crossed syndrome pattern is frequently observed
Gait: Not typically affected unless the condition is severe enough to alter trunk movement; some clients may walk with reduced arm swing on the affected side to minimize thoracic rotation

Palpation

Tone: Hypertonic pectoralis major and minor on the affected side — the pectoral muscles guard the inflamed junctions beneath them; intercostal muscles are hypertonic, contributing to the shallow breathing pattern; upper trapezius and levator scapulae are often hypertonic bilaterally as compensatory postural muscles in the underlying upper crossed syndrome pattern
Tenderness: Reproducible point tenderness at one or more costosternal junctions — this is the diagnostic hallmark and the finding that distinguishes costochondritis from cardiac pain; palpate each junction systematically (ribs 2–5 bilaterally); the affected junctions produce sharp, well-localized tenderness; in Tietze syndrome, the single affected junction is both tender and visibly swollen; intercostal tenderness along the corresponding intercostal spaces may be present as secondary involvement
Temperature: Normal or mildly warm at the affected junctions in acute cases; Tietze syndrome may show more pronounced warmth due to periarticular edema; no systemic temperature elevation
Tissue quality: Pectoralis major and minor may feel shortened and inelastic with restricted fascial mobility, reflecting chronic postural shortening; the costosternal junctions themselves feel like firm bony prominences — in Tietze syndrome, the affected junction is enlarged and firm compared to adjacent junctions; intercostal spaces may feel restricted with reduced rib excursion on palpation

Motion Assessment

AROM: Pain with trunk rotation and lateral flexion — these movements mechanically stress the costosternal junctions through rib cage deformation; deep inspiration pain (thoracic expansion directly loads the junctions); overhead reaching and horizontal adduction reproduce pain because pectoralis contraction generates traction on the costosternal attachments; cervical extension may reproduce upper rib junction pain by altering thoracic cage mechanics
PROM / end-feel: Pain at end-range trunk rotation — the junctions are maximally stressed at the limits of thoracic rotation; end-feel is typically muscle stretch (elastic) limited by pain rather than a true capsular pattern; passive overpressure into horizontal adduction (stretching the pectorals) may reproduce junction pain
Resisted testing: Pain with resisted horizontal adduction (loading pectoralis major) and resisted push-up motion (loading pectoralis and anterior chest wall); resisted trunk rotation may reproduce pain; strength is typically normal — pain is the limiting factor rather than structural weakness

Special Test Cluster

Costochondritis is primarily a clinical diagnosis of exclusion — the special test cluster is oriented toward confirming the MSK origin of the chest pain and ruling out cardiac and pulmonary differentials.

Test	Positive Finding	Purpose
Palpation reproduction of pain (CMTO)	Direct palpation of the costosternal junction reproduces the patient's familiar chest pain	Confirm MSK origin — this is the diagnostic hallmark; cardiac pain is NOT reproduced by palpation
Horizontal adduction stress test (CMTO)	Pain at the costosternal junction with passive or resisted horizontal adduction across the chest	Confirm that mechanical loading of the chest wall reproduces symptoms
Crowing rooster maneuver (supplementary)	Cervical extension combined with deep inspiration reproduces anterior chest wall pain	Stresses upper rib costosternal junctions through combined thoracic expansion and cervical extension
Rib spring test (supplementary)	Pain at the costosternal junction with anteroposterior rib compression	Differentiates costochondritis (junction pain) from rib fracture (shaft pain) and assesses rib mobility
Cardiac red flag screen (CMTO — rule out)	Absence of shortness of breath, diaphoresis, arm/jaw radiation, nausea, exercise-triggered pain, and non-reproducible palpation pain	Rule out cardiac origin — if ANY cardiac red flag is present, emergency referral; do not treat

Clinical decision rule: Costochondritis is a diagnosis of exclusion. If palpation does NOT reproduce the patient's chest pain, the diagnosis is not confirmed and the patient requires medical evaluation before massage treatment. A positive palpation reproduction test alone does not exclude co-existing cardiac pathology in patients with cardiac risk factors.

Differential Assessment

Condition	Key Distinguishing Feature
Myocardial infarction / angina	Substernal pressure or squeezing; radiates to left arm, jaw, or back; associated with shortness of breath, diaphoresis, nausea; NOT reproduced by palpation; triggered by exertion → emergency referral; do not treat
Intercostal neuralgia	Dermatomal distribution pain along the intercostal nerve path; burning or lancinating quality; may be triggered by coughing but not specifically reproduced by junction palpation
Rib fracture	History of significant trauma or severe coughing; focal bony tenderness over the rib shaft (not the junction); positive rib spring test with shaft pain; point tenderness
Thoracic disc herniation	Unilateral dermatomal pain; neurological findings (numbness, weakness); positive slump test; not reproduced by junction palpation
Pulmonary embolism	Sudden onset pleuritic chest pain; shortness of breath; tachycardia; risk factors (recent surgery, immobility, DVT history) → emergency referral; do not treat

CMTO Exam Relevance

CMTO Appendix category A1 (MSK conditions)
Cardiac vs. MSK chest pain differential is one of the most commonly tested clinical reasoning scenarios — know the features that distinguish costochondritis (reproducible palpation tenderness, mechanical aggravation, no cardiac red flags) from MI/angina (non-reproducible, shortness of breath, diaphoresis, radiation)
Palpation reproduction is the diagnostic hallmark — reproducible tenderness at the costosternal junction on palpation is the finding that confirms MSK origin
Tietze syndrome distinction: Costochondritis = tenderness without swelling at multiple junctions; Tietze = tenderness WITH visible swelling at a single junction — this is a commonly tested comparison
Red flag recognition: Any chest pain with cardiac red flags (shortness of breath, diaphoresis, radiation to left arm/jaw, nausea) requires emergency referral regardless of palpation findings
Know that costochondritis is a diagnosis of exclusion — cardiac pathology must be considered first in any anterior chest pain presentation

Massage Therapy Considerations

Primary therapeutic target: Reduce intercostal and pectoral muscle guarding that perpetuates mechanical stress on the inflamed costosternal junctions; restore normal thoracic mobility and breathing mechanics; address the upper crossed syndrome pattern that is the underlying biomechanical contributor in most cases
Sequencing logic: Address surrounding muscle tension (pectoralis, intercostals, posterior thorax) before any direct work near the inflamed junctions — reducing the muscular tension decreases the traction forces on the junctions; thoracic spine mobilization follows soft tissue work to restore segmental mobility; breathing retraining addresses the shallow, accessory-muscle-dominant pattern
Safety / contraindications: First priority — rule out cardiac red flags before treating ANY anterior chest wall pain; if any doubt exists, refer for medical evaluation; avoid direct deep pressure on the acutely inflamed costosternal junction itself — work the muscles that attach to the junctions rather than compressing the inflamed articulation; Tietze syndrome with significant swelling requires more conservative local approach until swelling resolves
Heat/cold guidance: Moist heat over the anterior chest wall before treatment to relax intercostal and pectoral musculature and improve tissue pliability; cold application post-treatment if the junctions are acutely tender; avoid prolonged ice application over the sternum (uncomfortable and may trigger cardiac anxiety in anxious patients)

Treatment Plan Foundation

Clinical Goals

Reduce pectoral and intercostal muscle guarding that generates traction on the inflamed costosternal junctions
Restore normal thoracic cage mobility and breathing mechanics
Address upper crossed syndrome postural contributors to reduce chronic mechanical stress on the anterior chest wall
Reduce pain and restore tolerance for functional upper body activities

Position

Supine with appropriate bolstering — pillow under the knees, small towel roll under the cervical spine; this allows direct access to the anterior chest wall, pectorals, and intercostals
Side-lying may be more comfortable if one side is acutely affected — position the affected side up to allow access without compression
Prone for posterior thorax work — address thoracic spine mobility and posterior chain muscle tension contributing to forward posture

Session Sequence

General effleurage to the posterior thorax — assess overall thoracic tissue state; begin relaxation of the erector spinae and posterior musculature that contributes to thoracic hypomobility
Myofascial release and petrissage to the upper trapezius, levator scapulae, and rhomboids — address the posterior component of upper crossed syndrome; reduce the postural forces that perpetuate anterior chest wall stress
Deep longitudinal stripping of the thoracic erector spinae — improve segmental thoracic mobility; address hypomobility that transfers mechanical stress to the costosternal junctions
Transition to supine — gentle effleurage to the pectoralis major and anterior chest wall; assess tissue response before deeper work
Sustained compression and myofascial release to pectoralis major and pectoralis minor — reduce the chronic shortening and guarding that generates traction on the costosternal junctions; work within pain-free tolerance; avoid direct compression of the inflamed junctions themselves
Gentle intercostal muscle work — fingertip effleurage and myofascial release along the intercostal spaces adjacent to the affected junctions; this improves rib cage excursion and reduces the intercostal muscle contribution to shallow breathing
Anterior scalene and sternocleidomastoid release — address the accessory breathing muscle overuse pattern that develops secondary to guarded thoracic breathing
Diaphragmatic breathing facilitation — gentle manual cues on the lower rib cage to encourage diaphragmatic rather than accessory muscle breathing; this reduces the chronic mechanical stress on the upper rib costosternal junctions

Adjunct Modalities

Hydrotherapy: Moist heat over the anterior chest wall and pectoralis region before treatment to improve tissue pliability and reduce muscle guarding; cold application (ice pack with cloth barrier) over the affected costosternal junctions post-treatment if acute tenderness is present
Joint mobilization: Thoracic spine PA mobilization (Grade I–II) to restore segmental mobility — thoracic hypomobility transfers mechanical stress to the costosternal junctions; performed after posterior soft tissue work; rib mobilization (gentle anteroposterior glide) for hypomobile ribs adjacent to the affected junctions — performed only after acute junction inflammation has subsided
Remedial exercise (on-table): Diaphragmatic breathing retraining — client places hands on the lower rib cage and practices expanding the lower ribs laterally with each breath rather than elevating the upper chest; this reprograms the breathing pattern away from accessory muscle dominance; gentle active trunk rotation within pain-free range to maintain thoracic mobility

Exam Station Notes

Demonstrate cardiac red flag screening before initiating treatment — verbalize the absence of shortness of breath, diaphoresis, arm/jaw radiation, and nausea
Palpate each costosternal junction systematically and identify the affected junction(s) — the examiner must see that you can localize the pathology
State the difference between costochondritis and Tietze syndrome if swelling is observed
Explain why you are treating the muscles surrounding the junctions rather than compressing the inflamed junctions directly

Verbal Notes

Address cardiac anxiety directly — explain that the palpation findings confirm the pain is from the chest wall joints, not the heart; many patients with costochondritis present with significant fear of cardiac disease
For pectoral work: explain that you will be working the chest muscles that attach near the painful area — obtain clear consent for anterior chest wall access, particularly for female clients
Post-treatment: advise that the pain may temporarily increase after the first session as muscles and junctions are mobilized, but should improve progressively with subsequent sessions

Self-Care

Diaphragmatic breathing practice — 5 minutes, 3 times daily; place hands on the lower rib cage and focus on lateral rib expansion; this reduces accessory muscle use and decreases mechanical stress on the upper rib junctions
Pectoral doorway stretch — stand in a doorway with forearms on the frame at shoulder height; gently lean forward until a stretch is felt across the chest; hold 30 seconds, 3 repetitions; this counteracts the pectoral shortening that perpetuates junction stress
Postural awareness — reduce prolonged periods of forward head and rounded shoulder positioning; adjust workstation ergonomics; take breaks from sustained upper body postures every 30 minutes
Avoid activities that reproducibly aggravate the pain — modify lifting, pushing, and overhead reaching until junction tenderness resolves

Key Takeaways

Reproducible point tenderness at the costosternal junction on palpation is the diagnostic hallmark that distinguishes costochondritis from cardiac pain — if palpation does NOT reproduce the pain, the diagnosis is not confirmed
Tietze syndrome is costochondritis with visible localized swelling at a single junction (usually the 2nd or 3rd rib); costochondritis involves multiple junctions without swelling
Cardiac red flags (shortness of breath, diaphoresis, radiation to left arm/jaw, nausea) require emergency referral regardless of palpation findings — costochondritis is a diagnosis of exclusion
The primary therapeutic target is reducing pectoral and intercostal muscle tension that generates traction on the inflamed junctions, not direct compression of the junctions themselves
Upper crossed syndrome is the most common underlying biomechanical contributor — anterior chest wall pain will recur unless the postural pattern is addressed
Costochondritis accounts for 13–36% of all chest pain presentations in primary care — it is common, benign, and self-limiting but generates significant patient anxiety