EURORAD ESR

Case 12691

Baxter's neuropathy: Isolated fatty atrophy of the abductor digiti minimi muscle in association with plantar fasciitis

Author(s)
A. Napoli, A. Rodriguez, G. Maida, R. Chobadindegui, E. Martín, C.H. Bruno, J.C. Morales

Diagnóstico por Imágenes Adrogué
Resonance
Bynnon 1433
B1846DWA Buenos Aires, Argentina
Email:augustonapoli@hotmail.com
 
Patient
female, 66 year(s)
 
 
  • Figure 1
    Abductor digiti minimi quinti muscle: normal and pathologic appearance
     

    Coronal T1 weighted TSE image shows the normal muscle anatomy. ADQ: abductor digiti quinti. FD: flexor digitorum brevis. QP: quadratus plantae. AH: abductor hallucis

     
    Area of Interest: Extremities; Musculoskeletal soft tissue; Neuroradiology peripheral nerve; Imaging Technique: MR; Procedure: Diagnostic procedure; Education; Special Focus: Inflammation;

    Coronal T1 weighted TSE image showing fatty replacement and atrophy of the abductor digiti minimi (star).

     
    Area of Interest: Extremities; Musculoskeletal soft tissue; Neuroradiology peripheral nerve; Imaging Technique: MR; Procedure: Diagnostic procedure; Education; Special Focus: Inflammation;
     
     
  • Figure 2
    Sites of entrapment
     

    Sites of entrapment. Adjacent to the medial edge of the abductor hallucis muscle (AHM) (A), between the fascia of the AHM and the quadratus plantae muscle (B) and, anterior to the medial calcaneal tuberosity (C).

     
    Area of Interest: Extremities; Musculoskeletal soft tissue; Neuroradiology peripheral nerve; Imaging Technique: MR; Procedure: Diagnostic procedure; Education; Special Focus: Inflammation;

    Coronal Proton Density weighted TSE image showing relation between plantar fasciitis (arrow) and site of entrapment of Baxter's nerve.

     
    Area of Interest: Extremities; Musculoskeletal soft tissue; Neuroradiology peripheral nerve; Imaging Technique: MR; Procedure: Diagnostic procedure; Education; Special Focus: Inflammation;

    Coronal STIR image showing relation between plantar fasciitis (arrow) and site of entrapment of Baxter's nerve.

     
    Area of Interest: Extremities; Musculoskeletal soft tissue; Neuroradiology peripheral nerve; Imaging Technique: MR; Procedure: Diagnostic procedure; Education; Special Focus: Inflammation;
     
     
  • Figure 3
    Baxter's nerve and calcaneal spur formation
     

    Drawing showing relation between Baxter’s nerve and site of calcaneal spur formation. Note that the flexor digitorum muscle has been partially removed.

     
    Area of Interest: Extremities; Musculoskeletal soft tissue; Neuroradiology peripheral nerve; Imaging Technique: MR; Procedure: Diagnostic procedure; Education; Special Focus: Inflammation;

    Sagittal STIR image shows plantar fascitis (star) with bone marrow edema of the calcaneus (open arrow) and edema of the periferic soft tissues at the insertion of the fascia (arrow).

     
    Area of Interest: Extremities; Musculoskeletal soft tissue; Neuroradiology peripheral nerve; Imaging Technique: MR; Procedure: Diagnostic procedure; Education; Special Focus: Inflammation;

    Sagittal T1 weighted TSE image shows fatty replacement and atrophy of the abductor digiti quinti (star)

     
    Area of Interest: Extremities; Musculoskeletal soft tissue; Neuroradiology peripheral nerve; Imaging Technique: MR; Procedure: Diagnostic procedure; Education; Special Focus: Inflammation;
     
     
Coronal T1 weighted TSE image shows the normal muscle anatomy. ADQ: abductor digiti quinti. FD: flexor digitorum brevis. QP: quadratus plantae. AH: abductor hallucis
 
Coronal T1 weighted TSE image showing fatty replacement and atrophy of the abductor digiti minimi (star).
 
Sites of entrapment. Adjacent to the medial edge of the abductor hallucis muscle (AHM) (A), between the fascia of the AHM and the quadratus plantae muscle (B) and, anterior to the medial calcaneal tuberosity (C).
 
Coronal Proton Density weighted TSE image showing relation between plantar fasciitis (arrow) and site of entrapment of Baxter's nerve.
 
Coronal STIR image showing relation between plantar fasciitis (arrow) and site of entrapment of Baxter's nerve.
 
Drawing showing relation between Baxter’s nerve and site of calcaneal spur formation. Note that the flexor digitorum muscle has been partially removed.
 
Sagittal STIR image shows plantar fascitis (star) with bone marrow edema of the calcaneus (open arrow) and edema of the periferic soft tissues at the insertion of the fascia (arrow).
 
Sagittal T1 weighted TSE image shows fatty replacement and atrophy of the abductor digiti quinti (star)
 
 
 
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