What Is Diastasis Recti
Diastasis recti is a condition where the two sides of the rectus abdominis muscles separate along the linea alba, the connective tissue that runs down the centre of the abdomen. This is a natural and necessary adaptation during pregnancy, allowing the abdominal wall to expand as the baby grows.
The issue is not the separation itself. The issue is whether the abdominal wall regains sufficient tension, strength, and functional control after childbirth.
From a clinical perspective, diastasis recti is not simply about a “gap”. It is about:
- Loss of tension through the linea alba
- Reduced force transfer across the abdominal wall
- Impaired core stability under load
Core stability → load transfer → spinal support → movement efficiency
If tension is lost within the abdominal wall, that entire chain is affected.
This is why diastasis recti is often linked to wider functional problems, not just appearance.
A detailed assessment looks beyond whether separation exists and focuses on how well the abdominal system is functioning as a whole. If you are unsure whether your core has properly recovered, Sanderstead Osteopaths can assess both structure and function and guide you on the appropriate next steps.
Why Abdominal Separation Happens During Pregnancy
During pregnancy, the body undergoes controlled structural change to accommodate the developing baby.
Key factors include:
- Progressive stretching of the abdominal wall
- Increased intra-abdominal pressure
- Hormonal changes affecting connective tissue elasticity
The linea alba lengthens and thins, allowing the abdomen to expand. This process is normal and expected.
However, the quality of recovery depends on:
- The ability of the connective tissue to regain tension
- The restoration of coordinated muscle activation
- The re-establishment of effective pressure management
If these factors are not addressed:
Stretch becomes slackness → slackness reduces tension → reduced tension limits stability
This is why some degree of separation may persist after pregnancy, particularly without targeted rehabilitation.
It is important to understand that this is not a failure of the body. It is a natural adaptation that requires structured recovery.
If you suspect that your abdominal wall has not regained its strength or control, Sanderstead Osteopaths can assess the extent of separation and, more importantly, how well the system is functioning.
How It Affects Core Strength and Stability
The abdominal wall plays a central role in stabilising the spine and transferring force through the body.
When the linea alba lacks tension:
- Force is not transferred efficiently across the midline
- The deep core muscles struggle to generate stability
- The spine becomes more reliant on passive structures
This creates a clear functional sequence:
Reduced abdominal tension → reduced core stability → increased spinal load → discomfort and instability
Common consequences include:
- Difficulty engaging the core
- A feeling of weakness or lack of support
- Increased strain through the lower back
- Reduced control during movement
It is important to distinguish between strength and function.
A person may be able to contract their abdominal muscles, but if the system is not coordinated, stability remains compromised.
Effective recovery requires:
Tension → coordination → integration into movement
If your core feels weak, unstable, or disconnected, it is likely that the issue extends beyond simple muscle strength.
A structured assessment at Sanderstead Osteopaths will determine not just whether diastasis recti is present, but how it is affecting your overall stability and movement, allowing for a targeted and effective recovery plan.
Signs You May Have Diastasis Recti
Diastasis recti is not always immediately obvious. In many cases, it presents through functional symptoms rather than purely visual changes. The key issue is not just whether separation exists, but whether the abdominal wall is able to generate and maintain tension under load.
From a clinical standpoint, the signs of diastasis recti are linked to reduced force transfer across the midline and impaired core stability.
Tension loss → reduced stability → altered movement → compensatory strain
Understanding these signs early allows for targeted intervention before dysfunction becomes more established.
If you are unsure whether what you are experiencing is normal postnatal recovery or something that requires attention, a structured assessment at Sanderstead Osteopaths will provide a clear answer.
Visible Doming or Bulging
One of the most recognisable signs of diastasis recti is visible doming or bulging along the midline of the abdomen.
This typically occurs during:
- Sitting up from lying down
- Getting out of bed
- Lifting or bracing
- Certain core exercises
The appearance is caused by:
Increased intra-abdominal pressure → insufficient tension in the linea alba → outward displacement of abdominal contents
This is not just a cosmetic issue. It is a functional indicator that the abdominal wall is not managing pressure effectively.
Key point:
Doming = pressure not being controlled
If pressure is not controlled:
Core stability is reduced → load shifts elsewhere → strain increases
Many people attempt to “push through” this or continue exercising without modification. This often prolongs recovery or worsens the condition.
If you notice doming during movement, it is a clear signal that the abdominal wall requires assessment and structured rehabilitation. Sanderstead Osteopaths can evaluate how your core is managing pressure and guide you on how to correct it safely.
Ongoing Core Weakness
A persistent feeling of core weakness is one of the most common indicators of diastasis recti.
This may present as:
- Difficulty engaging abdominal muscles
- Lack of support during movement
- Reduced strength when lifting
- A feeling of “disconnect” through the midsection
This is not simply about muscle strength.
The issue is often:
Poor tension → poor coordination → reduced functional output
Even if the muscles are capable of contracting, if they are not working together effectively, stability is compromised.
Core weakness → reduced stability → increased reliance on passive structures → higher risk of strain
This is why symptoms often extend beyond the abdomen itself.
If your core does not feel reliable or supportive, it is worth having it assessed properly. Sanderstead Osteopaths can determine whether diastasis recti is contributing to this and provide a structured plan to restore function.
Lower Back Pain and Instability
Lower back discomfort is frequently linked to reduced abdominal support.
When the core is not providing adequate stability:
The spine absorbs more load than it should
This creates a direct relationship:
Reduced abdominal tension → reduced spinal support → increased mechanical load → lower back pain
This may present as:
- Dull aching in the lower back
- Pain during lifting or bending
- Fatigue with prolonged standing
- A sense of instability or lack of control
It is important to understand that in many cases, the back is not the primary issue. It is responding to a lack of support from the anterior core.
Treating the symptom alone will not resolve the cause.
If you are experiencing ongoing back discomfort following pregnancy, particularly alongside signs of core weakness or doming, it is highly likely that abdominal function is contributing.
A detailed assessment at Sanderstead Osteopaths will identify whether diastasis recti is affecting your spinal stability and provide targeted treatment to address it at the source.
Why Diastasis Recti Doesn’t Always Heal Naturally
In many cases, a degree of abdominal separation reduces in the early postnatal period. However, full functional recovery is not guaranteed.
The key issue is not simply whether the gap narrows. It is whether the connective tissue regains sufficient tension and whether the abdominal wall functions effectively as part of the core system.
Gap size alone is not the determining factor.
Function → tension → load transfer → stability
If function is not restored, symptoms can persist even if the separation appears minimal.
Understanding why recovery sometimes stalls is critical to resolving it properly.
The Role of the Connective Tissue
The linea alba is not a muscle. It is a band of connective tissue that relies on tension rather than contraction.
During pregnancy:
- It lengthens
- It thins
- It loses some of its tensile strength
After birth, recovery depends on the ability of this tissue to:
- Regain tension
- Respond to load
- Transfer force across the midline
If tension is not restored:
Reduced tension → poor force transfer → reduced core stability
This creates a functional deficit, even if the visual gap is small.
It is also important to recognise that connective tissue responds differently to muscle. It does not strengthen through force alone. It requires:
- Controlled loading
- Correct alignment
- Coordinated muscle activation
Incorrect loading strategies can prevent recovery or even worsen the condition.
If you are unsure whether your abdominal wall has regained proper tension, Sanderstead Osteopaths can assess not just the presence of separation, but the quality of the tissue and its ability to function under load.
Poor Movement Patterns Slowing Recovery
The abdominal wall plays a central role in stabilising the spine and transferring force through the body.
When the linea alba lacks tension:
- Force is not transferred efficiently across the midline
- The deep core muscles struggle to generate stability
- The spine becomes more reliant on passive structures
This creates a clear functional sequence:
Reduced abdominal tension → reduced core stability → increased spinal load → discomfort and instability
Common consequences include:
- Difficulty engaging the core
- A feeling of weakness or lack of support
- Increased strain through the lower back
- Reduced control during movement
It is important to distinguish between strength and function.
A person may be able to contract their abdominal muscles, but if the system is not coordinated, stability remains compromised.
Effective recovery requires:
Tension → coordination → integration into movement
If your core feels weak, unstable, or disconnected, it is likely that the issue extends beyond simple muscle strength.
A structured assessment at Sanderstead Osteopaths will determine not just whether diastasis recti is present, but how it is affecting your overall stability and movement, allowing for a targeted and effective recovery plan.
How Osteopathy Assesses Abdominal Separation
Assessment of diastasis recti is not limited to identifying the presence of a gap. A clinically effective evaluation looks at structure, tissue quality, and functional performance under load.
Gap → tension → function → load transfer → stability
If any part of that chain is compromised, the abdominal wall will not perform effectively as part of the core system.
Osteopathic assessment focuses on:
- The characteristics of the separation
- The behaviour of the connective tissue under load
- The integration of the abdominal wall with breathing and movement
This ensures that treatment is based on function, not assumption.
If you want clarity on how your abdominal wall is performing, a structured assessment at Sanderstead Osteopaths provides a precise and clinically relevant evaluation.
Measuring Width and Depth of the Gap
The initial stage of assessment involves identifying the physical characteristics of the separation.
This includes:
- Width of the gap across the linea alba
- Depth of the separation
- Location along the midline (above, at, or below the navel)
However, width alone is not the defining factor.
A narrow gap with poor tension can be more problematic than a wider gap with good tension.
Key principle:
Gap size does not equal severity
Understanding both width and depth provides context, but it must be interpreted alongside functional performance.
If you have previously been told your separation is “small” but still experience symptoms, it is likely that function has not been fully assessed. Sanderstead Osteopaths evaluates both structure and performance to give a complete picture.
Assessing Tension and Function
The most important part of the assessment is how the abdominal wall behaves under load.
This includes:
- Ability to generate tension across the midline
- Response to increased intra-abdominal pressure
- Coordination with breathing
- Integration with the deeper core muscles
Tension → pressure management → stability → movement efficiency
If tension is insufficient:
Pressure is not contained → the abdominal wall bulges → stability is reduced
This is often observed as doming or a lack of control during movement.
Assessment also considers:
- Timing of muscle activation
- Endurance under sustained load
- Ability to maintain control during dynamic movement
If your core feels inconsistent or unreliable, it is often a sign that function, not just structure, needs to be addressed.
Sanderstead Osteopaths focuses on restoring functional performance, ensuring that the abdominal wall can handle real-world demands.
Looking at Whole Body Compensation
Diastasis recti rarely exists in isolation. The body adapts to reduced abdominal function by redistributing load elsewhere.
Common compensation patterns include:
- Increased reliance on the lower back
- Overactivation of hip flexors
- Altered pelvic positioning
- Increased tension through the upper body
This creates a chain:
Reduced abdominal function → altered load distribution → compensation → secondary strain
If these patterns are not identified:
Treatment becomes local → cause remains → symptoms persist
Osteopathic assessment takes a whole-body approach, identifying how the abdominal wall interacts with:
- The spine
- The pelvis
- The diaphragm
- The pelvic floor
This ensures that treatment addresses the root cause rather than isolated symptoms.
If you are experiencing symptoms beyond the abdominal area, such as back pain or instability, Sanderstead Osteopaths can assess how diastasis recti is influencing the wider system and provide a targeted treatment approach.
When to Seek Help for Diastasis Recti
Diastasis recti is common after pregnancy, but ongoing symptoms are not something that should simply be accepted or left to resolve without guidance.
The key factor is not just whether separation exists, but whether it is affecting function.
Function ↓ → stability ↓ → compensation ↑ → symptoms develop
If the abdominal wall is not managing load effectively, the body adapts. Over time, those adaptations lead to discomfort, weakness, or reduced confidence in movement.
Knowing when to seek help is critical. Early intervention improves outcomes, but it is equally important to understand that recovery is still possible well beyond the early postnatal stage.
If there is any uncertainty about how your core is functioning, a structured assessment at Sanderstead Osteopaths will provide clarity and a defined plan for improvement.
Early Postnatal Stage
In the early postnatal period, some degree of separation is expected. However, certain signs indicate that additional support may be needed.
These include:
- Visible doming during basic movements
- Difficulty engaging the core
- A feeling of instability when lifting or changing position
- Lack of improvement over the first few weeks
At this stage:
Early assessment → correct activation → improved recovery trajectory
Addressing issues early helps:
- Restore proper muscle activation
- Prevent compensatory movement patterns
- Reduce the risk of longer-term dysfunction
It also provides reassurance that recovery is progressing appropriately.
If you are in the early stages after pregnancy and want to ensure your recovery is on the right track, Sanderstead Osteopaths can assess your current function and guide you with safe, targeted strategies.
Diastasis recti is the separation of the rectus abdominis muscles along the linear alba.
This is a normal adaptation during pregnancy.
The issue arises when:
The connective tissue does not regain sufficient tension
Months or Years After Birth
It is common for diastasis recti to remain unaddressed for months or even years.
This often happens because:
- Symptoms are mild initially
- Changes are assumed to be permanent
- Recovery is expected to happen over time
However:
Time alone does not restore function
If the underlying issues are not addressed:
Compensation becomes established → dysfunction becomes persistent
Longer-term signs include:
- Ongoing core weakness
- Recurrent lower back pain
- Reduced tolerance to exercise
- A persistent feeling of instability
The important point is that recovery remains possible.
Even years after pregnancy:
Correct assessment → targeted rehabilitation → measurable improvement
The body retains the ability to adapt and improve when given the correct input.
If you have been living with symptoms for an extended period, or feel that your recovery never fully completed, Sanderstead Osteopaths can assess your current function and provide a structured approach to restoring strength, stability, and control.
Book a Diastasis Recti Assessment in Sanderstead
If your core does not feel as strong, stable, or responsive as it should, the next step is not guesswork, it is assessment.
Diastasis recti is not just about how the abdomen looks. It is about how the abdominal wall functions under load, how effectively it transfers force, and how well it supports the spine and pelvis during everyday movement.
If that system is not working properly:
Reduced tension → reduced stability → increased strain → ongoing symptoms
A structured assessment provides:
- A clear understanding of whether separation is present
- Insight into how well your abdominal wall is functioning
- Identification of compensation patterns affecting recovery
- A defined, step-by-step plan to restore strength and control
This removes uncertainty.
Instead of trying different exercises or hoping recovery improves over time, you have a clinically guided approach based on how your body is actually performing.
If you are noticing:
- Visible doming or bulging
- Persistent core weakness
- Lower back discomfort
- A lack of confidence when lifting or exercising
it is the right time to have it assessed properly.
Sanderstead Osteopaths offers a comprehensive diastasis recti assessment, combining hands-on evaluation with clear, practical guidance tailored to your body.
To move forward with confidence and ensure your recovery is progressing as it should, contact Sanderstead Osteopaths or book your assessment online and speak directly with the team.
Meet Your Osteopath
Judith has developed a broad, well-rounded approach using a variety of skills gained over the years. She incorporates a range of treatment methods, including myofascial release, cranial, structural and visceral techniques, as well as scar tissue work and lymphatic drainage. By combining these approaches, Judith provides tailored, individualised treatments suited to each patientu2019s needs.
To see Judith, her fees are as follows:
New Patient (1 Hour) – £80
Follow up (30 Mins) – £55
Judith Tardif, Registered Osteopath
Judith Tardif is a fully qualified and registered osteopath, graduating from Oxford Brookes University in 2012. Since then, she has built extensive clinical experience working in primary care settings across Oxfordshire, Buckinghamshire, and London, treating a wide range of musculoskeletal conditions.
Judith has a particular clinical interest in postnatal recovery, pelvic health, and supporting women following pregnancy and childbirth. This includes assessing and treating conditions such as diastasis recti, pelvic floor dysfunction, postnatal back pain, and neck and shoulder strain associated with feeding and carrying.
Her approach is centred on understanding how the body functions as a whole, rather than focusing on isolated symptoms. She takes into account posture, movement patterns, breathing mechanics, and core stability to identify the root cause of discomfort and guide effective recovery.
Judith uses a combination of:
- Myofascial release
- Cranial osteopathy
- Structural and joint-based techniques
- Visceral osteopathy
- Scar tissue therapy
- Lymphatic drainage
This allows her to tailor each treatment to the individual, ensuring it is both effective and appropriate for the stage of postnatal recovery.
She is known for her gentle, patient-focused approach, which is particularly important when working with new mothers. Treatment is always adapted to ensure comfort, confidence, and clarity at every stage.
For patients attending a Mummy MOT or postnatal assessment, Judithu2019s goal is simple:
To provide a clear understanding of how your body is functioning, and a structured, realistic plan to help you regain strength, stability, and confidence in movement.
If you are seeking professional guidance for postnatal recovery, you will be assessed and treated by an experienced osteopath with a strong focus on safe, effective, and individualised care.