Power Doppler ultrasonography for positional graft compression after femoral artery reconstruction: A case report.

RATIONALE: Vascular reconstruction with autologous vein grafts in musculoskeletal tumors poses biomechanical challenges.

PATIENT CONCERNS: A 35-year-old man developed pain and numbness during deep knee flexion 3.5 years after femoral artery reconstruction using the great saphenous vein.

DIAGNOSES: Power Doppler ultrasonography revealed positional vascular compromise in the reconstructed graft.

INTERVENTIONS: Conservative management with activity modification.

OUTCOMES: Symptoms improved with avoidance of deep flexion; no further progression was noted.

LESSONS: Dynamic Doppler ultrasonography is a simple, noninvasive method for diagnosing mechanical graft compression after vascular reconstruction.