Beyond the Hip: A Systems-Based Perspective on Femoroacetabular Impingement

By Carlos Damian, FDN-P, Functional Fitness Trainer, Chemical Engineer.

For most of my career, I viewed movement through the lens of fitness and performance.

As a coach, my focus was helping people become stronger, move better, improve their conditioning, and develop confidence in their physical abilities. Over time, however, I began to notice something that challenged the conventional way I thought about injuries and dysfunction.

Two athletes could present with seemingly similar anatomical structures, train similarly, and participate in the same sport, yet experience dramatically different outcomes.

One athlete developed pain. Another did not.

One athlete deteriorated over time. Another remained resilient.

The question that kept resurfacing was simple:

If anatomy is the primary cause, why do similar structures and approaches produce different results?

Years later, my own health journey would lead me to ask similar questions outside the realm of movement.

As a teenager, I struggled with stubborn weight issues and chronic Seborrheic Dermatitis. Despite following recommendations and trying conventional approaches, answers were often incomplete and focused primarily on symptom management. The deeper I investigated, the more I realized that health challenges rarely result from a single isolated cause.

Instead, they often emerge from the interaction of multiple stressors, habits, adaptations, and compensations that accumulate over time.

This realization eventually led me to Functional Diagnostic Nutrition (FDN), where I was introduced to a systems-based approach to health.

One of the core principles of FDN is that symptoms are often downstream expressions of broader dysfunction. Rather than asking only what symptom is present, we ask what underlying patterns may be contributing to it.

That perspective fundamentally changed how I viewed human performance and musculoskeletal problems.

Looking Beyond Anatomy

Femoroacetabular Impingement (FAI) is traditionally described as a mechanical conflict between the femur and the acetabulum. Structural abnormalities such as CAM and Pincer morphologies are often highlighted as primary contributors.

While structure undoubtedly matters, years of observation have made me question whether anatomy alone explains the condition.

Many individuals possess radiographic findings consistent with FAI yet remain asymptomatic. Others experience significant symptoms despite relatively modest structural findings.

This discrepancy suggests that anatomy may be only one piece of a much larger puzzle.

The Accumulation Model

What if FAI is not simply the result of bone shape?

What if it emerges from the interaction of multiple factors accumulating over time?

Movement quality. Training volume. Recovery capacity. Sleep. Psychological stress. Previous injuries. Sport-specific demands. Lifestyle habits. Tissue resilience.

From a systems perspective, each factor may contribute a small amount of stress. Individually, none may be sufficient to create symptoms. Collectively, however, they may exceed the body's ability to adapt.

This concept closely mirrors the FDN model of cumulative stress and metabolic chaos, where dysfunction develops not because of one single event, but because of the progressive accumulation of multiple stressors.

What I Started Observing in Young Athletes

As I continued coaching athletes over the years, another pattern began to emerge.

Many of the younger athletes I worked with were participating in organized sports more than previous generations. They trained hard, competed often, and spent countless hours developing sport-specific skills.

Yet outside of practice, their lifestyles were becoming increasingly sedentary.

Many spent hours sitting at school.

Then hours sitting doing homework.

Then hours sitting playing video games.

Many were exposed to artificial light and screens late into the evening, often at the expense of sleep quality and recovery.

At the same time, many were spending their entire developmental years inside highly structured footwear that limited natural foot function and altered the way they interacted with the ground.

As a coach, I found myself wondering:

What happens when a developing body spends thousands of hours sitting, thousands of hours inside restrictive footwear, thousands of hours under artificial light, and then is expected to perform explosive athletic movements at a high level?

I am not suggesting that any one of these factors directly causes FAI.

Rather, I began viewing them as potential contributors within a larger system.

The foot influences the ankle. The ankle influences the knee. The knee influences the hip.

Movement patterns established during childhood often become the foundation upon which athletic development is built.

Likewise, sleep quality influences recovery. Recovery influences adaptation. Adaptation influences tissue resilience.

From a systems perspective, these factors are connected.

What I repeatedly observed was not necessarily a single injury mechanism, but an accumulation of influences that may gradually shape how an athlete moves, recovers, adapts, and ultimately tolerates physical demands.

This observation further reinforced a belief that has become central to my approach:

The body does not simply respond to training. It responds to everything. Training is only one part of the equation.

The environment, lifestyle, recovery habits, movement opportunities, and daily behaviors surrounding that training may be equally important in determining long-term outcomes.

Adaptation Versus Breakdown

One lesson repeatedly reinforced throughout my coaching career is that the human body is remarkably adaptable.

Adaptation is the norm.

Breakdown occurs when adaptation can no longer keep pace with demand.

This raises an important possibility regarding FAI.

Perhaps the question is not simply:

"How much load is the hip experiencing?"

But rather:

"How well is the individual adapting to that load?"

A highly stressed, poorly recovered athlete may tolerate forces very differently than an athlete whose recovery, resilience, and overall health are well supported.

The same movement can produce different outcomes depending on the state of the system receiving it.

A Broader Clinical Perspective

This perspective does not dismiss anatomy. Nor does it dismiss biomechanics.

Rather, it places them within a larger framework.

Structure matters. Movement matters. Recovery matters. Stress matters. Health status matters.

The body does not operate in isolated compartments.

It functions as an integrated system.

When we view FAI through this lens, we move beyond searching for a single cause and begin exploring the interaction between structure, function, adaptation, and cumulative stress.

Conclusion

My journey from athlete, Engineer, coach, and health seeker to Functional Diagnostic Nutrition Practitioner taught me that the most meaningful answers are often found by asking better questions.

FAI may not simply be a bone problem. Nor exclusively a loading problem.

It may represent the outcome of a dynamic relationship between anatomy, movement, recovery, resilience, and the cumulative stresses experienced by the individual.

Whether examining metabolic health or musculoskeletal health, the principle remains remarkably similar:

The body is always adapting to the environment we provide it.

Understanding that environment may be just as important as understanding the structure itself.