Key Points: Weight Bearing CT (WBCT) allows for bilateral comparative data that is imperative when diagnosing ankle syndesmosis. Side-to-side volume differences of 19% or greater may be indicative of an abnormality. Gender norms are important to consider when evaluating ankle…
Key Points: Radiostereometric Analysis (RSA) uses X-Ray and markers inserted into the bone intraoperatively to assess implant migration and fixation. Model-based RSA (MBRSA) improves upon RSA by incorporating 3D implant CAD models. In one study, weight bearing CT (WBCT)-RSA was…
Key Points: Weight Bearing CT (WBCT) helps visualize several structural and alignment differences between Progressive Collapsing Foot Deformity (PCFD) with and without Hallux Valgus (HV). Rotation of the first tarsometatarsal joint, and intrinsic rotation of the first metatarsal bone were…
Key Points: Imaging modalities such as plain radiographs (X-Ray), computed tomography (CT), and magnetic resonance imaging (MRI), don’t have the diagnostic accuracy needed to detect syndesmotic widening or subtle instability. Weight Bearing CT (WBCT) imaging when combined with a distance…
By Dr. David Soomekh, DPM Foot and ankle specialist and surgeon, sports medicine & reconstructive foot and ankle surgery, Foot & Ankle Specialty Group, Beverly Hills, CA
Key Points: Cone Beam CT (CBCT), specifically WBCT three-dimensional (3D) visualization approach allows for a more accurate assessment of foot alignment with attention to planus, cavus, varus or valgus deformities. Post-operatively, weight bearing CT (WBCT) has the potential to better…
