Posterior Arthroscopic Treatment of a Massive Effusion in the Flexor Hallucis Longus Tendon Sheath Associated with Stenosing Tenosynovitis and Os Trigonum

<div>T1-weighted, T2-weighted, and T2-spectral attenuated inversion recovery magnetic resonance images showing a massive effusion around the flexor hallucis longus (arrow) at a level proximal to the ankle joint posteriorly in the (a) sagittal, (b) coronal, and (c) axial planes and between the talar tubercles and the master knot of Henry in the (d) sagittal, (e) coronal, and (f) axial planes.</div>

Case Reports in Orthopedics

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Figure 4

Figure 4: Posterior Arthroscopic Treatment of a Massive Effusion in the Flexor Hallucis Longus Tendon Sheath Associated with Stenosing Tenosynovitis and Os Trigonum 

Figure 4 | Posterior Arthroscopic Treatment of a Massive Effusion in the Flexor Hallucis Longus Tendon Sheath Associated with Stenosing Tenosynovitis and Os Trigonum 