Normal Bernageau Length Size on Radiography
Normal Bernageau length ranges from -6 to +6 mm on lateral knee radiography, a key measurement for assessing patellar height and patellofemoral alignment.
Knee
23 entries
B
Normal Blackburne-Peel Index Size on Radiography
The normal Blackburne-Peel Index on lateral knee radiography ranges from 0.5 to 1.0, serving as a key measure of patellar height.
C
Normal Caton-Deschamps Index Size on Radiography
Normal Caton-Deschamps Index on lateral knee radiography ranges from 0.6 to 1.2, guiding diagnosis of patella alta and baja.
F
Normal Femoral Angle Size on Radiography and MRI
Normal femoral angle at the knee measures 75–85° on AP radiography; learn measurement technique, clinical significance, and common pathologies.
Normal Femoral Intercondylar Sulcus Depth Size on Radiography
Normal femoral intercondylar sulcus depth on sunrise radiography measures greater than 5 mm; shallowing is a key marker of trochlear dysplasia.
Normal Femoropatellar Joint Space Size on Radiography
Normal femoropatellar joint space measures greater than 5 mm on sunrise radiograph — a key threshold for detecting patellofemoral pathology.
I
Normal Insall-Salvati Ratio Size on Radiography
Normal Insall-Salvati ratio on lateral knee radiography ranges from 0.8–1.2, with values outside this range indicating patella alta or baja.
K
Normal Knee Joint Space Width on Radiography and MRI
Normal knee joint space width measures 3–5 mm on anteroposterior radiography, a key threshold for detecting cartilage loss and osteoarthritis.
L
Normal Lateral Trochlear Inclination Size on MRI
Normal lateral trochlear inclination on MRI measures greater than 11°, a key threshold for assessing patellar instability and trochlear dysplasia.
M
Normal Metaphyseal-Diaphyseal Tibia Angle Size on Radiography
Normal metaphyseal-diaphyseal tibia angle is less than 11° on AP radiography, helping distinguish physiological bowing from pathological tibia vara.
Normal Modified Insall-Salvati Ratio Size on Radiography
The normal modified Insall-Salvati ratio is less than 2 on lateral knee radiography, a key measure for detecting patellar height abnormalities.
P
Normal Patellar Nose Size on Radiography and MRI
Learn the normal patellar nose measurements on radiography and MRI, including key thresholds linked to patellar instability and chondral pathology.
Normal Patellar Tilt Angle: Radiography, CT & MRI
Normal patellar tilt angle is 20° on sunrise view; learn measurement technique and clinical significance on radiography, CT, and MRI.
Normal Patellofemoral Index Size on Radiography
The normal patellofemoral index on sunrise radiograph is less than 1.6, a key metric for diagnosing lateral patellar compression syndrome.
Normal Posterior Cruciate Ligament Thickness on MRI
Normal posterior cruciate ligament thickness on MRI measures less than 6 mm; values above this threshold suggest PCL pathology requiring further evaluation.
Q
Normal Quadriceps Angle Size on X-ray, CT & MRI
Normal quadriceps (Q) angle of the knee measures 15–20° on radiography, CT, and MRI, with clinical relevance to patellar instability and tracking disorders.
S
Normal Sulcus Angle Size on Radiography | Knee
The normal sulcus angle of the knee measures 126–150° on sunrise radiography, a key metric for assessing trochlear morphology and patellar instability.
Normal Suprapatellar Bursa Width on MRI
Normal suprapatellar bursa width on MRI measures less than 5 mm in the lateral dimension, with larger values suggesting joint effusion or bursitis.
T
Normal Tibial Plateau Angle Size on Radiography
Normal tibial plateau angle on lateral radiography ranges from 7° to 22°, with values outside this range linked to knee instability and implant failure.
Normal Tibial Tubercle-Trochlea Distance Size on Radiography
Normal tibial tubercle-trochlea (TT-TG) distance on lateral radiography is less than 2 cm, a key measurement in patellar instability assessment.
Normal Tibiofemoral Angle Size on Radiography and MRI
Normal tibiofemoral angle measures less than 15° on AP radiography; values above this threshold suggest pathologic varus or valgus deformity.
Normal Trochlear Depth Size on MRI: Knee Reference
Normal femoral trochlear depth on MRI measures greater than 3 mm; values below this threshold indicate trochlear dysplasia and patellar instability risk.
Normal Trochlear Facet Asymmetry Ratio Size on MRI
Normal trochlear facet asymmetry ratio on MRI is less than 0.4; values at or above this threshold suggest femoral trochlear dysplasia.
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