Pick the posture, then upload that film — each of the four (preop/postop × standing/sitting) keeps its own image, so you can measure all of them. The S1 endplate and femoral head are auto-detected; verify by dragging — SS / PT / PI update live. S1 endplate: 2 points along the sacral (S1) superior endplate. Femoral head: 1–2 points at the femoral-head centre(s) — on a true lateral the heads overlap. Computed so PI = SS + PT. Local only.
Tap the ⓘ next to any field or result for an inline definition and diagram. Full glossary below.
Upload an AP pelvis image: the cup is auto-detected and a default teardrop line is placed. Verify by dragging any point — RI / RA update live. Cup rim: ≥5 points around the ellipse. Teardrops: drag the 2 points onto the teardrops. Marker: 2 points spanning the 25 mm sphere (optional, for cup size). All processing is local.
Schwarz tilt ratio = lesser-pelvis height / obturator-foramen height (neutral ≈ 0.5). Lesser-pelvis height: vertical distance from the top of the sacroiliac (SI) joints down to the upper border of the pubic symphysis. Obturator-foramen height: the maximum vertical height of one obturator foramen. Upload an AP pelvis and place the 2 points for each (drag to refine), or enter the heights manually. Estimate only — lateral radiographs are required for accurate pelvic tilt. All processing is local.
Uses the case above as the preoperative plan. Enter the actual postoperative cup orientation and sitting SS to compare against the functional safe zone.
Corrects synovial WBC for blood (corrected = synovial WBC − synovial RBC × serum WBC ÷ serum RBC) and pushes the markers into the MSIS score and the reimplantation tool. WBC correction unvalidated in PJI.
Debridement, antibiotics & implant retention is appropriate for acute PJI only when all inclusion criteria are met. Decision support only.
Applies the Ascione synovial thresholds (WBC ≥934/µL, PMN ≥52%) plus standard gates. Decision support only — not the full weighted Ascione score.
Recent Level I evidence supports one-stage in many cases once reserved for two-stage. Tick adverse factors. Decision support only.
Searchable CPT / ICD-10 / modifier reference. Click any code to copy it. Reference only — verify against current CPT/ICD-10 and payer policy.
Office, hospital & consult E&M · injections · fracture care · modifiers · prolonged services · add-on revenue (CCM/RTM/RPM) · DME. Click any code to copy it. Reference only — verify against current CPT and payer policy.