A Non-Surgical Approach for Adult Pectus Excavatum Patients
— Proposal for Forward Bend Exercise to Re-educate the Postural Chain from Pelvis to Thorax —
📝 Note: The diagrams in this article are in Japanese, but the mechanisms they illustrate are explained in the text.
Introduction
Pectus excavatum is a congenital chest wall deformity in which the sternum is depressed inward, occurring in approximately 1 in 1,000 people. Conventional treatments include surgical correction via the Nuss procedure and vacuum bell therapy, but each method has its limitations.
This article presents a new exercise therapy approach discovered by the author after experiencing both Nuss surgery and vacuum bell therapy. This approach is based on the perspective of re-educating the entire postural chain from pelvis to thorax, rather than locally correcting just the sternum.
Chapter 1: Conventional Treatments and Their Limitations
The Nuss Procedure: Features and Limitations
The Nuss procedure, developed by Dr. Donald Nuss in 1987, is a minimally invasive surgery that inserts a metal bar into the chest cavity to physically push up and correct the sternum. The bar remains in place for 2-3 years before removal.
While this method can directly correct skeletal shape, it has the following limitations:
- Surgical risks and pain
- Adaptation of surrounding soft tissues (fascia, muscles, intercostal tissues) is left to chance
- Postural problems may persist after surgery
Vacuum Bell: Features and Limitations
The vacuum bell, developed in Germany, is a non-invasive device that applies negative pressure to the chest wall to lift the sternum. While it doesn't require surgery, it has significant limitations:
1. Reverse Pressure on Surrounding Tissues
While the center (sternum) is lifted, the edges of the suction cup press down on the surrounding costal cartilage and ribs.
2. One-Size-Fits-All Problem
Pectus excavatum depressions vary greatly between individuals, but vacuum bells typically only come in S/M/L sizes.
3. Difficulty Maintaining Effects in Adults
In adults, the costal cartilage has calcified, so the chest tends to return to its original shape when the device is removed.
Figure 1: Conventional Treatments and Their Limitations — Mechanisms and problems of Nuss procedure and vacuum bell
Chapter 2: Pectus Excavatum and Full-Body Postural Chain
Recent Research Shows Reduced Spinal Mobility
A 2024 study from Turkey (Mete et al.) compared 22 adolescents with pectus excavatum to healthy controls and found:
- Significantly reduced hip/sacral sagittal plane mobility (p < 0.001)
- Significantly higher thoracic kyphosis angle
- Overall reduced spinal mobility
"Adolescents with pectus excavatum showed reduced spinal mobility, spinal alignment disorders, and reduced spinal position sense. It is important not to overlook the spine in physical examination of adolescents with chest wall deformities."
The Chain from Pelvis to Thorax
In adult pectus excavatum patients, the following postural pattern becomes fixed: posterior pelvic tilt → reduced lumbar lordosis → thoracic hyperkyphosis (rounded back) → shoulders roll forward → thorax closes → sternum depresses
💡 Key Insight: Even if you pull up just the sternum, if the foundation (pelvis) remains unchanged, it will eventually return to its original state. This is the fundamental reason why vacuum bell effects don't persist in adults.
Figure 2: Postural Chain from Pelvis to Thorax — Common full-body postural patterns in pectus excavatum patients
Chapter 3: Theory and Practice of Forward Bend Exercise
Basic Principles
- Address the entire chain from pelvis to thorax
- Use body weight and gravity rather than external force
- Re-educate the nervous system through dynamic repetitive movement rather than static stretching
Practice Method
Starting Position
- Stand with knees straight
- Consciously avoid rounding your back
- Place hands on top of thighs
Movement
- Bend forward from the hip joints
- Repeat up and down in the 90° to 60° range
- About 50 repetitions per set, 2-3 sets per day
- Total time: about 20 minutes per day
Figure 3: Forward Bend Exercise Practice — Correct form and range of motion
Why This Method Makes Sense
From a Skeletal Perspective
The ribs connect to the spine at the back and to the sternum at the front. When you bend forward and extend the thoracic spine, the ribs rotate in an "opening" direction, making it easier for the sternum to move forward and upward.
From a Muscular/Fascial Perspective
- Rectus abdominis relaxes → Reduced downward pull on the thorax
- Keeping back straight → Pectoralis major/minor get stretched
- Hands on thighs → Scapulae stabilize, allowing selective opening of the anterior thorax
- Hamstring stretch → Corrects posterior pelvic tilt tendency
Figure 4: Skeletal Mechanism Explained — How forward bending affects ribs, sternum, and spine
Chapter 4: Combination with O-Leg Correction Exercise
Possible Connection Between Pectus Excavatum and O-Legs
The postural patterns common in pectus excavatum patients (posterior pelvic tilt, reduced hip mobility) share many features with those common in people with O-legs, suggesting they may be different manifestations of the same "postural pattern syndrome."
O-Leg Correction Exercise Method
- Spread heels apart, bring toes together (hip internal rotation + foot adduction)
- Bring heels together (transition to hip external rotation)
- Spread toes apart further (hip external rotation + foot abduction)
- Repeat slowly
2-3 times per day, a few minutes each, is sufficient.
Figure 5: Combination with O-Leg Correction Exercise — Alternating hip internal and external rotation
Chapter 5: Comparison with Conventional Methods and Safety
Figure 6: Treatment Comparison — Nuss procedure, vacuum bell, and forward bend exercise
Safety
This forward bend exercise method is fundamentally low-risk:
- Uses only body weight and gravity
- No excessive external force
- Can stop if there's pain
- Requires no special equipment
However, those with a history of glaucoma or elevated intraocular pressure should consult a doctor.
Chapter 6: Why This Approach Hasn't Spread
Healthcare Economics
The Nuss procedure involves surgical fees and bar sales; vacuum bells have device sales. Meanwhile, forward bend exercise requires no equipment and can be done at home—no money changes hands.
Research Funding Issues
Pharmaceutical companies and medical device manufacturers have no incentive to invest in "equipment-free exercise therapy." As a result, areas that may be effective remain unstudied.
Conclusion: The Importance of Patient-Driven Information Sharing
The approach presented here was discovered through trial and error by the author after experiencing both Nuss surgery and vacuum bell therapy. Objectively speaking:
- It is theoretically sound
- It doesn't contradict existing medical research
- It has high safety
However, comparative data and reproducibility in other patients have not yet been proven. But waiting for "official approval" from the medical community may mean this knowledge never spreads.
For those struggling with pectus excavatum, especially adults who haven't given up on improvement, I hope this approach serves as one option to consider.
References
- Mete O, et al. Spinal posture, mobility, and position sense in adolescents with chest wall deformities. Pediatr Surg Int. 2024;40(1):178.
- Hamilton Health Sciences. Pectus Excavatum Exercise Instructions. 2019.
- Tocchioni F, et al. Pectus Excavatum and Heritable Disorders of the Connective Tissue. Pediatr Rep. 2013;5(3):e15.
- Kagawa University Medical School, Plastic Surgery Department - Pectus Excavatum Specialist Site
- Alaca N, Yüksel M. Comparison of physical functions and psychosocial conditions. Pediatr Surg Int. 2021;37:765-775.