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Thumb ultrasound: Technique and pathologies

View Article: PubMed Central - PubMed

ABSTRACT

Ultrasound is ideally suited for the assessment of complex anatomy and pathologies of the thumb. Focused and dynamic thumb ultrasound can provide a rapid real-time diagnosis and can be used for guided treatment in certain clinical situations. We present a simplified approach to scanning technique for thumb-related pathologies and illustrate a spectrum of common and uncommon pathologies encountered.

No MeSH data available.


Related in: MedlinePlus

Avulsed extensor pollicis longus (EPL) at insertion/mallet thumb (A-C) along with interphalengeal joint radial collateral ligament avulsion (D-F). Long axis (A) ultrasound shows an avulsed bony fragment from the dorsal aspect of the base of distal phalanx (arrow) with EPL tendon attached to it (open arrow). Lateral radiograph (B) and three-dimensional computed tomography–volume rendering technique image (C) of the thumb shows avulsed bony fragment. Long axis (D) ultrasound view along the lateral aspect of the interphalengeal joint shows thickened RCL with avulsed bony fragment. Axial CT (E) and three-dimensional volume rendering technique image (F) shows the avulsed bony fragment
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Figure 8: Avulsed extensor pollicis longus (EPL) at insertion/mallet thumb (A-C) along with interphalengeal joint radial collateral ligament avulsion (D-F). Long axis (A) ultrasound shows an avulsed bony fragment from the dorsal aspect of the base of distal phalanx (arrow) with EPL tendon attached to it (open arrow). Lateral radiograph (B) and three-dimensional computed tomography–volume rendering technique image (C) of the thumb shows avulsed bony fragment. Long axis (D) ultrasound view along the lateral aspect of the interphalengeal joint shows thickened RCL with avulsed bony fragment. Axial CT (E) and three-dimensional volume rendering technique image (F) shows the avulsed bony fragment

Mentions: Acute tendon injuries tend to take the form of direct impact injury, stretch injury during contraction (strain), or penetrating injury. Depending on the site of tear of the tendon, injuries are classified into zones [Table 1]. The treatment and functional outcome depend on the zone of injury.[45] Ultrasound is useful to confirm the presence of tendon rupture [Figures 6 and 7], differentiate between the partial thickness and full thickness tears [Video 3], identify if the tear is associated with bony avulsion [Figure 8A–C], as well as to identify the precise location of the tendon ends.


Thumb ultrasound: Technique and pathologies
Avulsed extensor pollicis longus (EPL) at insertion/mallet thumb (A-C) along with interphalengeal joint radial collateral ligament avulsion (D-F). Long axis (A) ultrasound shows an avulsed bony fragment from the dorsal aspect of the base of distal phalanx (arrow) with EPL tendon attached to it (open arrow). Lateral radiograph (B) and three-dimensional computed tomography–volume rendering technique image (C) of the thumb shows avulsed bony fragment. Long axis (D) ultrasound view along the lateral aspect of the interphalengeal joint shows thickened RCL with avulsed bony fragment. Axial CT (E) and three-dimensional volume rendering technique image (F) shows the avulsed bony fragment
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5036340&req=5

Figure 8: Avulsed extensor pollicis longus (EPL) at insertion/mallet thumb (A-C) along with interphalengeal joint radial collateral ligament avulsion (D-F). Long axis (A) ultrasound shows an avulsed bony fragment from the dorsal aspect of the base of distal phalanx (arrow) with EPL tendon attached to it (open arrow). Lateral radiograph (B) and three-dimensional computed tomography–volume rendering technique image (C) of the thumb shows avulsed bony fragment. Long axis (D) ultrasound view along the lateral aspect of the interphalengeal joint shows thickened RCL with avulsed bony fragment. Axial CT (E) and three-dimensional volume rendering technique image (F) shows the avulsed bony fragment
Mentions: Acute tendon injuries tend to take the form of direct impact injury, stretch injury during contraction (strain), or penetrating injury. Depending on the site of tear of the tendon, injuries are classified into zones [Table 1]. The treatment and functional outcome depend on the zone of injury.[45] Ultrasound is useful to confirm the presence of tendon rupture [Figures 6 and 7], differentiate between the partial thickness and full thickness tears [Video 3], identify if the tear is associated with bony avulsion [Figure 8A–C], as well as to identify the precise location of the tendon ends.

View Article: PubMed Central - PubMed

ABSTRACT

Ultrasound is ideally suited for the assessment of complex anatomy and pathologies of the thumb. Focused and dynamic thumb ultrasound can provide a rapid real-time diagnosis and can be used for guided treatment in certain clinical situations. We present a simplified approach to scanning technique for thumb-related pathologies and illustrate a spectrum of common and uncommon pathologies encountered.

No MeSH data available.


Related in: MedlinePlus