Back pain is a ubiquitous part of adult experience. Poll after poll reports that 80% of adults suffer from debilitating back pain at some point in their lives, making it the world’s leading cause of disability and one of the most common reasons for visiting a health care provider. Yet despite this, there remains a lack of understanding about the root causes of back pain and what will effectively treat it.
Knowing what the most common causes of back pain are and how an experienced physical therapist will treat each one at its source, rather than just the symptom, is the key to making informed choices about care when back pain strikes – or your third or fourth episode.
The Most Common Causes of Back Pain
Back pain is not a diagnosis. It is a symptom that can be caused by many different structures and mechanisms and the cure for one cause may not be the cure for another. That’s why the first step in recovering from back pain is a full clinical examination, not to provide a one-size-fits-all approach but to pinpoint the cause of pain and deal with it directly.
Lumbar Disc Conditions
The discs in between the vertebrae of the lower back act as shock absorbers and enable the full range of movement. They are made up of a fibrous outer layer of cartilage, which encases a gel nucleus. If the outer layer is damaged – either as a result of excessive mechanical loading, a discrete injury or repeated loading in compromised postures – the nucleus can impinge on the surrounding neural structures, which can cause pain that is localized to the back but radiates down the buttock and leg as a result of pressure on the nerve root.
This condition – known as sciatica or lumbar radiculopathy – is one of the most common presentations in the rehabilitation of low back pain. Physical therapy effectively treats disc-related back pain with a series of directional preference exercises that reliably reduce the radiating pain component and centralize pain; manual therapy to restore normal segmental mobility and reduce irritation of the nerve root; and progressive core conditioning to reduce the mechanical stresses on the disc over time.
Facet Joint Dysfunction
The facet joints are the paired joints in the back of each lumbar segment that control spinal motion. They are highly innervated and can be a source of local back pain when they are stiff, inflamed, or overloaded from dysfunction in the adjacent spinal segment.
Pain from the facet joints usually manifests as local pain that is aggravated by extension positions—standing for long periods, walking uphill or leaning back. It tends to be unilateral and can have associated paraspinal muscle spasms. Manual therapies directed at the affected facet joint – such as joint mobilization and manipulation – directly address the restriction and lead to a rapid improvement in pain and function in many instances. This is then complemented by graded exercise for the restoration of movement patterns and muscle activity that offloads the facet joints during everyday activities.
Muscle Imbalance and Neuromuscular Dysfunction
The most common and most frequently overlooked cause of recurrent back pain is the failure of the segmental stabilizing muscles of the lumbar spine to respond properly to movement. The multifidus muscles and transversus abdominis muscles dynamically support the lumbar vertebrae. If these muscles are inhibited – by pain, inactivity, or the postures of desk-bound work – they don’t provide adequate protection to the lumbar spine against the shear and rotational stresses of everyday movement.
The consequence is the cycle that many patients describe: their back pain goes away after an acute episode only to flair up with minor events a few months later. The recurrence pattern is a result of the continued presence of the underlying neuromuscular deficit despite resolution of the structural lesion that triggered the acute event. Back pain rehabilitation that focuses on reactivation and progressive loading of the deep stabilizing muscles (using specific exercises with biofeedback to guide the timing of muscle contraction) rather than generic core strengthening is clearly the most effective approach associated with long-term success.Â
Postural and Ergonomic Causes
The modern workplace is a major cause of back pain, and the reason is simple: the human lower back is a dynamic, not a static, structure. Sitting eliminates the normal lumbar lordosis, progressively compresses the back of the disc and the interspinous ligaments over hours and years of sitting, and progressively turns off the activity of the deep stabilizing muscles that are normally activated by dynamic movement.
The consequences – low back pain that worsens throughout the day, is most severe on return from the commute, and is partially relieved by movement – is one of the more frequent low back pain presentations in back pain rehabilitation clinics throughout the Bay Area. This is treated by physical therapy through manual techniques that mobilize the joints stiffened by prolonged postures, specific exercise to activate the inhibited stabilizing muscles, and practical advice to alter the environmental factors that cause the dysfunction.
Sacroiliac Joint Dysfunction
The sacroiliac (SI) joints are the joints that connect the sacrum to the pelvis and are a common cause of low back pain and buttock pain that is often mistaken for lumbar disc injury. SI joint pain is commonly felt over the buttock and posterior pelvis, and may radiate into the back of the thigh, and is worsened by specific tests that load the joint and rule out irritation of a lumbar nerve root. Manual therapy to the SI joints, stabilization exercises to the hip and pelvis, and activity modification, if correctly diagnosed, effectively treat SI joint dysfunction.
How Physical Therapy Addresses Back Pain at the Source
The consistent feature across all of these causes is that physical therapy addresses them not by masking the symptom but by identifying and treating the underlying mechanical and neuromuscular contributors. This is what distinguishes back pain rehabilitation from symptomatic management and what explains why physical therapy produces more durable outcomes than rest, medication, or passive modalities applied without clinical assessment.
At iMotion Physical Therapy, back pain rehabilitation begins with a thorough evaluation that identifies which of the mechanisms described above is driving the patient’s specific presentation. Manual therapy restores the structural mobility and tissue health that pain has restricted. Progressive exercise rebuilds the neuromuscular control and movement quality that normal function requires.
Education equips the patient to understand their condition and manage their movement habits proactively – the knowledge that prevents the next episode from becoming as severe or as long-lasting as the one that brought them to therapy.
For patients seeking back pain relief Fremont and across the Bay Area, iMotion Physical Therapy provides the specialist clinical environment where this complete approach to back pain rehabilitation is delivered consistently and effectively. With locations in Fremont, San Jose, and Los Gatos, expert back pain care is accessible across the communities where it is most needed.