Tenography of FHL
Tenosynovitis:
3 types: peritendinitis, chronic tenosynovitis, stenosing tenosynovitis. The first two types usually resolve with conservative treatment. The latter usually requires surgery
Stenosing tenosynovitis:
Fibrous adhesions within tendon sheath
Due to malleolar/calcaneal fractures, repetitive trauma
Common in ballet dancers, running and jumping athletes
Associated with posterior ankle impingement
US: Fluid around the tendon
MR: Increased fluid in the tendon sheath
Tenogram:Usually FHL stenoses are short (5 mm) with proximal dilated sheath, causing outpouching of contrast. Is usually used for therapeutic purpose
References:
Na JB et al. The Flexor Hallucis Longus: Tenographic Technique and Correlation of Imaging Findings with Surgery in 39 Ankles. Radiology 2005;236:974-982
