MSK Ultrasound: Musculoskeletal Imaging at the Point of Care
Explore real-time ultrasound imaging of muscles, tendons, ligaments, joints, and superficial soft tissues. Discover educational shoulder and knee imaging demonstrations acquired with the Sono Mobile® CL64 wireless handheld ultrasound.
What Is MSK Ultrasound?
MSK ultrasound, also known as musculoskeletal ultrasound, is a diagnostic imaging technique that uses high-frequency sound waves to visualize accessible muscles, tendons, ligaments, joints, bursae, and superficial soft tissues in real time.
Musculoskeletal ultrasound can support the evaluation of selected tendon and ligament abnormalities, joint effusions, muscle injuries, and superficial soft-tissue findings. The examination may focus on a specific clinical question or form part of a comprehensive diagnostic assessment.
Unlike static imaging alone, ultrasound can be performed during controlled movement to assess selected anatomical relationships. This dynamic imaging capability is particularly relevant to musculoskeletal practice.
Ultrasound does not use ionizing radiation. Its diagnostic usefulness depends on the anatomical region, equipment, examination technique, and operator expertise. MRI, radiography, or additional evaluation may still be required.
For professional examination guidance, consult the AIUM Musculoskeletal Ultrasound Practice Parameter .
What Can Musculoskeletal Ultrasound Evaluate?
Tendons
Examine accessible tendons for selected changes in fibrillar appearance, thickness, continuity, and surrounding fluid.
Ligaments
Assess selected superficial ligaments using appropriate anatomical landmarks and multiple scanning planes.
Joint Effusions
Investigate accessible joint recesses, including the suprapatellar region, for fluid and selected synovial findings.
Muscles & Soft Tissues
Visualize superficial muscle architecture, localized swelling, and selected soft-tissue abnormalities.
Dynamic Imaging
Observe selected tendons and anatomical relationships during clinically appropriate controlled movement.
Guided Procedures
Support anatomical localization and real-time needle visualization during selected procedures performed by trained clinicians.
Shoulder Ultrasound: Real-Time MSK Imaging
Shoulder Ultrasound | Sono Mobile® CL64
Why Is Shoulder Ultrasound Important?
Shoulder ultrasound is an established musculoskeletal imaging application used to examine accessible tendons and periarticular soft tissues.
Depending on the clinical indication, a comprehensive shoulder examination may include evaluation of the rotator cuff tendons, long head of the biceps tendon, subacromial-subdeltoid bursa, and selected joint-related structures.
High-resolution linear imaging enables examination in longitudinal and transverse planes. Dynamic assessment may also help evaluate selected movement-dependent findings.
- Superficial tendon visualization
- Long-axis and short-axis imaging
- Assessment of selected periarticular structures
- Dynamic scanning when clinically appropriate
This video demonstrates shoulder-region imaging using the Sono Mobile® CL64. It should not be interpreted as a complete diagnostic shoulder examination.
Learn more about orthopedic ultrasound applications and sports medicine ultrasound .
Knee Ultrasound: Anatomy and Guided Imaging
The following three educational videos demonstrate anterior knee anatomy, quadriceps tendon imaging, and ultrasound-guided procedural visualization using the Sono Mobile® CL64. These examples illustrate selected MSK applications rather than a comprehensive diagnostic knee examination.
Quadriceps Tendon
Educational visualization of the quadriceps tendon and anterior knee anatomy.
Suprapatellar Fat Pad & Quadriceps Tendon
Ultrasound imaging of the anterior knee, demonstrating the quadriceps tendon, suprapatellar fat pad, and their anatomical relationship to the suprapatellar recess.
Guided Knee Injection
An educational example of ultrasound imaging during a knee injection procedure.
Clinical note: These videos are educational demonstrations. They do not establish a specific diagnosis or the effectiveness of an injectable treatment. Clinical decisions require appropriate training, examination, and professional judgment.
Dynamic Musculoskeletal Ultrasound
Dynamic MSK ultrasound allows clinicians to observe selected anatomical structures during controlled movement.
It can support assessment of tendon gliding, movement-dependent anatomical relationships, and selected mechanical abnormalities.
Probe orientation and anisotropy must be considered during interpretation. Movements should be appropriate for the patient's condition and clinical presentation.
Ultrasound-Guided MSK Procedures
Ultrasound can help trained clinicians identify anatomical landmarks, plan an approach, and visualize needle positioning during selected procedures.
Applications may include joint aspiration and injection when clinically indicated. Appropriate patient selection, informed consent, sterile technique, and procedural training remain essential.
The AIUM diagnostic and interventional MSK ultrasound resources provide further professional context.
How to Choose an MSK Ultrasound Machine
Selecting an MSK ultrasound machine requires consideration of imaging depth, transducer frequency, image optimization, portability, and the intended clinical workflow.
Linear Transducer
High-resolution linear transducers are commonly recommended for musculoskeletal ultrasound. Higher frequencies favor superficial detail, while lower frequencies may be required for deeper structures.
Imaging Controls
Depth, gain, and imaging mode adjustments help optimize visualization. Scanning in more than one plane and minimizing anisotropy are important for interpretation.
Clinical Portability
Consider wireless operation, supported operating systems, battery performance, image storage, cleaning requirements, and available training resources.
The AIUM Practice Parameter discusses high-resolution linear transducers and frequency selection for different anatomical depths. Device suitability should be evaluated for the intended examination.
Handheld Ultrasound Devices for MSK Imaging
Sono Mobile® offers wireless handheld ultrasound configurations for selected musculoskeletal and point-of-care applications. For this clinical area, the CL64 and L4 provide linear imaging capabilities.
Sono Mobile® CL64
Dual-Head Handheld Ultrasound
The Sono Mobile® CL64 combines convex and linear scanning heads, with a phased imaging preset, in a wireless system.
Its linear scanning frequencies of 7.5 and 10 MHz support selected superficial musculoskeletal imaging applications.
The dual-head configuration also provides flexibility for additional POCUS examinations beyond MSK imaging.
Sono Mobile® L4
Dedicated Linear Handheld Ultrasound
The Sono Mobile® L4 is a single-head wireless linear ultrasound device with 7.5 and 10 MHz scanning frequencies.
It provides a dedicated linear configuration for selected superficial applications, including musculoskeletal and vascular imaging.
The L4 may be an option for clinicians whose primary requirement is a linear ultrasound probe.
MSK Ultrasound Across Medical Specialties
Musculoskeletal ultrasound supports different clinical workflows. The following FAGONEX resources explore related applications in greater specialty-specific detail.
Further Reading on Musculoskeletal Ultrasound
Explore related FAGONEX articles for additional educational context. These supporting resources complement the broader MSK specialty overview.
MSK Ultrasound FAQs
What does MSK ultrasound stand for?
MSK stands for musculoskeletal. MSK ultrasound uses sound waves to image accessible muscles, tendons, ligaments, joints, and superficial soft tissues.
What can musculoskeletal ultrasound detect?
Depending on the clinical indication and anatomical region, it can help evaluate selected tendon and ligament abnormalities, joint effusions, bursae, muscle injuries, and superficial soft-tissue findings.
Is MSK ultrasound better than MRI?
Neither modality is universally better. Ultrasound provides real-time and dynamic imaging of many accessible structures, while MRI can offer broader evaluation of deeper and intra-articular tissues. Selection depends on the clinical question.
Which probe is used for MSK ultrasound?
High-resolution linear-array transducers are commonly used. Frequency selection depends on the depth and size of the anatomical target.
Can handheld ultrasound be used for MSK imaging?
Yes. Handheld systems with appropriate transducers and imaging capabilities can support selected MSK examinations when used by trained clinicians.
Can ultrasound guide knee injections?
Ultrasound can help appropriately trained clinicians visualize anatomy and needle positioning during selected procedures. Appropriate sterile technique and clinical judgment remain essential.
Find the Right Handheld Ultrasound for Your MSK Workflow
Explore Sono Mobile® CL64 and L4 for selected musculoskeletal imaging applications. Compare configurations and discuss your clinical requirements with FAGONEX.
Scientific References & Professional Guidelines
- American Institute of Ultrasound in Medicine. The AIUM Practice Parameter for the Performance of the Musculoskeletal Ultrasound Examination. Journal of Ultrasound in Medicine. 2023;42(9):E23–E35. Read the peer-reviewed guideline ↗
- American Institute of Ultrasound in Medicine. Musculoskeletal Ultrasound Practice Parameters. View AIUM professional guidance ↗
- American Institute of Ultrasound in Medicine. Diagnostic MSK Ultrasound Accreditation and Professional Resources. View professional resources ↗
- National Library of Medicine / PubMed. The AIUM Practice Parameter for the Performance of the Musculoskeletal Ultrasound Examination. PMID: 37130137. View PubMed record ↗
Professional educational information only. This page does not replace appropriate clinical training, comprehensive diagnostic evaluation, or individualized medical judgment.