Heel AP/LAT – (RT) at Dr. Essa Lab

Heel AP/LAT – (RT) at Dr. Essa Lab

The Heel AP/LAT – (RT) is a specialized, non-invasive digital radiographic examination designed to capture highly detailed images of the right heel (calcaneus) from two distinct anatomical perspectives: Anteroposterior (AP) and Lateral (LAT). At Dr. Essa Lab, one of Pakistan’s most trusted diagnostic networks, this imaging modality is performed using state-of-the-art digital radiography (DR) systems. These advanced systems ensure exceptionally high image resolution, minimal radiation exposure, and rapid processing times. The calcaneus is the largest tarsal bone in the human foot, serving as the primary foundation for weight-bearing, shock absorption during ambulation, and the insertion site for major structural tissues like the Achilles tendon and the plantar fascia. Consequently, any pathology affecting this region can severely compromise mobility and overall quality of life.

By utilizing both AP and lateral projections, radiologists at Dr. Essa Lab can comprehensively evaluate the complex three-dimensional architecture of the right heel. The lateral view is particularly valuable for assessing the height and length of the calcaneus, evaluating the integrity of the subtalar joint, measuring critical angles such as Böhler’s angle and the Angle of Gissane, and identifying plantar or posterior bony spurs. The AP view (often obtained as an axial or oblique projection to profile the calcaneus clearly) allows for the evaluation of medial and lateral cortical borders, sustentaculum tali alignment, and the detection of lateral widening or displacement resulting from high-impact fractures. This diagnostic study is of paramount clinical importance in orthopedics, podiatry, and rheumatology, providing the objective structural evidence necessary to guide conservative management, physical therapy, or surgical intervention.

Clinical Procedure: What to Expect

Patient Preparation

Preparing for a Heel AP/LAT – (RT) at Dr. Essa Lab is straightforward and requires minimal effort, as it is a plain, non-contrast X-ray. Patients are advised to follow these guidelines to ensure a smooth and efficient imaging session:

• No Fasting Required: You may eat, drink, and take your regular medications as usual before the procedure.
• Appropriate Footwear and Clothing: Wear loose-fitting trousers or clothing that can easily be rolled up to the knee. You will need to remove your right shoe, sock, and any ankle jewelry prior to the scan.
• Metal Removal: Ensure that no metal objects, such as ankle bracelets, toe rings, or metal zippers on clothing, are near the right foot, as metal causes significant artifacts on digital X-ray images.
• Pregnancy Notification: If you are pregnant or suspect you might be, you must inform the radiographer or receptionist before the procedure. While the radiation dose for a foot X-ray is extremely low and focused far from the abdomen, appropriate lead shielding will be provided to protect the pelvic region.
• Prior Records: Bring any previous X-rays, MRI scans, or clinical referral letters related to your right heel pain to help the reporting radiologist perform a comparative analysis.

During the Procedure

Upon entering the digital radiography suite at Dr. Essa Lab, you will be greeted by a certified radiologic technologist who will guide you through the process. The procedure is entirely painless and typically takes between 10 to 15 minutes to complete.

• Positioning: For the lateral (LAT) view, you will be asked to lie on your right side on the X-ray table, or sit with your right leg extended and the lateral aspect of your right foot resting flat against the digital image receptor. The foot is dorsiflexed to a 90-degree angle to ensure optimal anatomical alignment.
• AP/Axial View Positioning: For the anteroposterior or axial view, you may sit or lie down with your knee flexed, placing the sole of your right foot flat on the detector, or the technologist may use a specialized angled beam approach to project the calcaneus clearly without superimposition of the tibia and fibula.
• Radiation Shielding: A protective lead apron will be placed over your lap or pelvic area to shield your reproductive organs from scattered radiation.
• Image Acquisition: The technologist will align the X-ray tube, collimate the light beam precisely to the right heel area, and step behind a protective lead barrier to activate the machine. You must remain completely still for a fraction of a second while the exposure is made to prevent motion blur.
• Post-Procedure: Once the technologist verifies that the digital images are clear and anatomically complete, you can immediately put on your socks and shoes and resume all normal daily activities.

When is a Heel AP/LAT – (RT) Performed?

Plantar Fasciitis and Calcaneal Spurs

Plantar fasciitis is one of the most common causes of chronic heel pain, characterized by localized tenderness at the anteromedial aspect of the right calcaneus. Clinicians frequently request a Heel AP/LAT – (RT) to rule out other osseous pathologies and to evaluate for the presence of a plantar calcaneal enthesophyte (heel spur). While the spur itself is often a secondary finding resulting from chronic tension on the plantar fascia, visualizing its size, orientation, and structural relationship to the surrounding soft tissues helps confirm the diagnosis and guides targeted therapies such as orthotic inserts, shockwave therapy, or local injections.

Calcaneal Fractures and Trauma

The calcaneus is highly susceptible to fractures resulting from high-energy axial loading, such as falls from a height or motor vehicle accidents. Patients presenting with acute post-traumatic pain, severe swelling, ecchymosis, and an inability to bear weight on the right foot require immediate radiographic evaluation. The Heel AP/LAT – (RT) is the primary diagnostic tool used to identify cortical disruptions, assess joint depression, and evaluate subtalar joint involvement. It allows the radiologist to calculate Böhler’s angle; a decrease in this angle indicates a calcaneal compression fracture that may require surgical reconstruction to restore normal foot biomechanics.

Achilles Tendinopathy and Haglund’s Deformity

Posterior heel pain is frequently associated with pathology at the insertion of the Achilles tendon. A lateral X-ray of the right heel is highly effective in demonstrating Haglund’s deformity, which is an abnormal prominence of the posterosuperior aspect of the calcaneus (often referred to as a “pump bump”). This bony prominence can cause chronic friction against the Achilles tendon, leading to insertional tendinopathy, retrocalcaneal bursitis, and localized soft tissue swelling. The X-ray clearly visualizes this bony projection and any associated calcification within the distal Achilles tendon fibers.

Osteomyelitis and Bone Infections

In patients with chronic, non-healing diabetic foot ulcers, peripheral neuropathy, or deep penetrating wounds on the right heel, there is a significant risk of the infection spreading to the underlying bone, resulting in osteomyelitis. Clinicians order a Heel AP/LAT – (RT) to screen for early radiographic signs of bone infection, such as localized periosteal reaction, cortical erosion, or focal osteolytic (bone-destroying) lesions. Detecting these changes early is critical for initiating aggressive antibiotic therapy or surgical debridement to prevent systemic spread or amputation.

Systemic Inflammatory Conditions

Systemic inflammatory arthropathies, including rheumatoid arthritis, ankylosing spondylitis, psoriatic arthritis, and reactive arthritis, frequently target the entheses (the sites where tendons and ligaments attach to bone). The right heel is a primary site for enthesitis. A Heel AP/LAT – (RT) helps rheumatologists detect early erosive changes at the posterior or plantar aspects of the calcaneus, generalized osteopenia, or fluffy periosteal new bone formation, which are key diagnostic markers that help differentiate inflammatory arthritis from mechanical heel pain.

What Does a Heel AP/LAT – (RT) Detect?

A detailed radiographic analysis of the right heel can reveal a wide spectrum of acute, chronic, inflammatory, and metabolic conditions. The digital X-ray images are capable of detecting:

• Plantar Calcaneal Spurs: Bony projections arising from the plantar tuberosity, pointing anteriorly along the course of the plantar fascia.
• Posterior Calcaneal Spurs: Osseous overgrowths at the insertion of the Achilles tendon on the posterior calcaneal tuberosity.
• Acute Calcaneal Fractures: Displaced or non-displaced fracture lines traversing the body, tuberosity, or processes of the calcaneus.
• Stress Fractures: Subtle, linear bands of increased bone density (sclerosis) perpendicular to the trabecular pattern, representing healing stress fractures.
• Haglund’s Deformity: An enlarged, prominent posterosuperior border of the calcaneus.
• Subtalar Joint Osteoarthritis: Narrowing of the joint space between the talus and calcaneus, accompanied by subchondral sclerosis and osteophyte formation.
• Calcaneocuboid Joint Degeneration: Joint space narrowing and degenerative changes at the anterior aspect of the calcaneus.
• Böhler’s Angle Reduction: An angle of less than 20 to 40 degrees, indicating calcaneal collapse or compression fracture.
• Angle of Gissane Alteration: Distortion of the critical structural relationship of the subtalar articular facets.
• Osteomyelitis: Focal bone destruction (lysis), cortical irregularites, or periosteal elevation indicating active bone infection.
• Osteopenia: Localized or generalized reduction in bone mineral density, visible as thinning of the bony cortex and increased radiolucency.
• Bone Cysts: Well-defined, radiolucent lesions within the calcaneus, such as unicameral (simple) bone cysts, which are common in this bone.
• Benign Bone Tumors: Lesions like osteoid osteoma or osteochondroma affecting the calcaneus.
• Malignant Bone Lesions: Osteolytic or osteoblastic destruction of bone tissue from primary bone tumors or metastatic disease.
• Soft Tissue Swelling: Increased density and thickness of the soft tissues surrounding the heel, indicating acute trauma, edema, or infection.
• Kager’s Fat Pad Obliteration: Loss of the normal radiolucent appearance of the pre-Achilles fat pad, indicating retrocalcaneal bursitis or Achilles tendon pathology.
• Calcific Tendinitis: Calcium deposits within the distal portion of the Achilles tendon or the plantar fascia.
• Foreign Bodies: Radiopaque foreign objects (such as glass, metal, or gravel) embedded in the soft tissues of the right heel.
• Sever’s Disease (Calcaneal Apophysitis): Fragmentation or increased density of the calcaneal apophysis in pediatric patients experiencing growth-related heel pain.
• Subluxation or Dislocation: Displacement of the calcaneus relative to the talus or cuboid bones.
• Cortical Erosions: Small, localized areas of bone loss at the entheses, characteristic of seronegative spondyloarthropathies.
• Periosteal Reaction: New bone formation along the outer cortex, indicating healing, infection, or chronic irritation.
• Subchondral Cysts: Small, fluid-filled spaces forming just below the joint cartilage in advanced osteoarthritis.
• Trabecular Disruption: Interruption of the normal weight-bearing bone patterns inside the calcaneus.

Turnaround Time and Report Access at Dr. Essa Lab

At Dr. Essa Lab, we understand that receiving timely diagnostic results is crucial for patient peace of mind and prompt clinical decision-making. Thanks to our fully digital radiography systems, the images captured during your Heel AP/LAT – (RT) are instantly transmitted to our Picture Archiving and Communication System (PACS). A qualified consultant radiologist will carefully review the digital images, analyze the structural alignment, evaluate the bone density, and compile a comprehensive, accurate diagnostic report.

The finalized radiology report is typically completed and available within a few hours of the procedure. Dr. Essa Lab provides multiple convenient ways for patients to access their reports and digital X-ray films. Patients can visit any of our conveniently located branches in Karachi and other cities to collect their printed reports and high-resolution films. Alternatively, reports can be viewed, downloaded, and shared online through the secure Dr. Essa Lab patient portal or mobile application, ensuring seamless integration with your healthcare provider’s workflow.

Heel AP/LAT – (RT) Findings Overview

Structure / Parameter Evaluated	Normal Findings	Possible Abnormal Findings
Calcaneal Bone Integrity	Intact cortex, normal trabecular pattern, no fracture lines.	Fracture lines, cortical disruption, stress-induced sclerotic bands, osteolytic lesions.
Plantar Aspect (Plantar Fascia Site)	Smooth cortical margin without bony overgrowth.	Plantar calcaneal spur (enthesophyte), cortical erosion, localized soft tissue thickening.
Posterior Aspect (Achilles Site)	Normal posterosuperior contour, no abnormal bony projections.	Haglund’s deformity (pump bump), posterior calcaneal spur, calcific insertional tendinitis.
Subtalar Joint Space	Preserved joint space, smooth articular surfaces, normal alignment.	Joint space narrowing, subchondral sclerosis, osteophytes, subluxation.
Calcaneocuboid Joint Space	Well-aligned, clear joint space without degenerative changes.	Joint space narrowing, subchondral cystic changes, marginal osteophytes.
Böhler’s Angle	Typically ranges between 20 and 40 degrees.	Angle less than 20 degrees, indicating calcaneal compression or collapse.
Soft Tissue / Kager’s Fat Pad	Clear, radiolucent triangular fat pad; normal soft tissue thickness.	Obliteration of Kager’s fat pad, diffuse soft tissue swelling, radiopaque foreign bodies.
Bone Density (Mineralization)	Normal radiodensity with well-defined trabeculae.	Diffuse osteopenia, localized osteolysis, patchy sclerosis (osteomyelitis).

Note: Diagnostic findings should always be interpreted by a qualified healthcare professional together with the patient’s symptoms, medical history, physical examination, laboratory investigations, previous imaging studies, and other relevant clinical information. Additional investigations or specialist consultation may be recommended depending on the findings.

Why Choose Dr. Essa Lab for Heel AP/LAT – (RT)?

• Experienced Healthcare Professionals: Our team consists of highly qualified radiologic technologists and board-certified consultant radiologists committed to delivering diagnostic excellence.
• Patient-Focused Care: We prioritize patient comfort, safety, and dignity throughout the entire imaging process, ensuring a stress-free experience.
• Quality Diagnostic Services: Dr. Essa Lab utilizes cutting-edge digital radiography systems that produce high-definition images with minimal radiation exposure.
• Professional Reporting: Every X-ray is meticulously interpreted by a radiologist, providing clear, detailed, and clinically actionable reports.
• Modern Diagnostic Approach: Our fully integrated digital network allows for rapid image processing, archiving, and retrieval.
• Comfortable Environment: Our diagnostic centers are designed to be clean, welcoming, and highly organized to minimize wait times.
• Convenient Location: With an extensive network of branches across Karachi and other major cities, accessing quality diagnostics is highly convenient.
• Commitment to Accurate Diagnosis: Established in 1987, Dr. Essa Lab has built decades of trust by maintaining rigorous quality control standards in all diagnostic modalities.