Normal Talocalcaneal Angle Size on Radiography
Normal talocalcaneal angle values on radiography range by age, from 27–56° in newborns to 15–56° in children aged 4–9 years.
Radiography
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Normal Talocalcaneal Index Size on Radiography
Reference values for the normal talocalcaneal index on lateral radiographs in infants and children, from newborn through age 9.
Normal Talocrural Angle Size on Radiography
Normal talocrural angle measures 8–15° on AP mortise radiograph; deviations indicate fibular length abnormality or ankle instability.
Normal Talonavicular Coverage Angle Size on Radiography
Normal talonavicular coverage angle is less than 7° on AP radiography; values above this threshold indicate hindfoot malalignment and pes planus.
Normal Talus Declination Angle Size on Radiography
The normal talus declination angle measures 21° on lateral radiography, a key reference for assessing hindfoot biomechanics and foot arch alignment.
Normal Tarsometatarsal Joint Space Size on Radiography
Normal tarsometatarsal joint space measures 2.0–2.5 mm on radiography; deviations may indicate Lisfranc injury or arthropathy.
Normal Thoracic Wedge Compression Fracture Size on X-Ray/CT
Normal anterior-to-posterior vertebral height difference in thoracic wedge compression fracture is less than 3 mm on lateral radiography and CT.
Normal Tibia Metaphysodiaphyseal Angle Size on Radiography
Normal tibia metaphysodiaphyseal angle on AP radiography measures 2.3–7.9° in children aged 11–30 months, helping differentiate physiologic bowing from Blount disease.
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 Tibiocalcaneal Angle Dorsiflexion Size on Radiography
Normal tibiocalcaneal angle at maximal dorsiflexion on lateral radiography ranges by age, from 42° in newborns to 25–73° in children aged 4–9 years.
Normal Tibiocalcaneal Angle Size by Age on Radiography
Reference values for the normal tibiocalcaneal angle on lateral radiography from newborn through age 9, with clinical implications for pediatric foot alignment.
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 Tibiofibular Joint Space Size on Radiography
Normal tibiofibular joint space measures less than 6 mm on AP and mortise radiographs, a key threshold for diagnosing syndesmotic injury.
Normal Tibiotalar Angle Size on Radiography
Learn normal tibiotalar angle values on lateral radiography from newborn through 9 years, including clinical significance and measurement technique.
Normal Total Calcaneal Angle Size on Radiography
The normal total calcaneal angle on lateral radiography measures less than 90°, a key reference for assessing calcaneal morphology and foot alignment.
Normal Toygar's Angle Size on Radiography
Normal Toygar's angle measures approximately 150° on lateral radiography, serving as a key indicator of Achilles tendon integrity and heel alignment.
Normal Trachea Coronal/Sagittal Diameter Ratio on X-Ray & CT
The normal trachea coronal-to-sagittal diameter ratio exceeds 0.6 on radiography and CT, helping detect saber-sheath deformity and other tracheal abnormalities.
Normal Tracheal Maximal Diameter Size on Radiography
Normal tracheal maximal diameter on posteroanterior radiography measures less than 3 cm; values exceeding this threshold may indicate tracheomegaly or pathology.
Normal Tracheoesophageal Stripe Thickness on Radiography
The normal tracheoesophageal stripe measures less than 5.5 mm on lateral chest radiography; thickening suggests posterior mediastinal pathology.
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Normal Ulnar Angle Size on Radiography | Elbow
Normal ulnar angle at the elbow measures 72–99° on lateral radiography, a key reference for assessing joint alignment and pathology.
Normal Ulnar Variance Size on Radiography
Normal ulnar variance on posteroanterior radiography ranges from -2 to +2 mm, a key measurement in wrist pain and carpal pathology workup.
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Normal Van Akkerveeken Distance Size: X-ray, CT, MRI
Normal Van Akkerveeken distance is less than 3 mm on lateral radiography, CT, and MRI, serving as a key marker for lumbosacral instability.
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Normal Wackenheim's Angle Size on X-ray, CT & MRI
Normal Wackenheim's angle measures >150° on lateral imaging; learn its clinical significance for craniocervical junction stability assessment.
Normal Wedge Compression Fracture Size on Radiography & CT
Normal anterior-posterior vertebral height difference for lumbosacral wedge compression fracture is <3 mm on lateral radiography and CT.
Normal Wiberg Angle Size on Hip Radiography
Normal Wiberg center-edge angle of the hip measures 25–40° on AP radiography, a key index for diagnosing dysplasia and overcoverage.
Normal Wiberg's Angle Size on Hip Radiography
Normal Wiberg's center-edge angle values on AP hip radiography range by age, guiding assessment of femoral head coverage and dysplasia.
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Normal Youm's Carpal Height Index Size on Radiography
Normal Youm's Index of Carpal Height on PA radiography ranges from 0.51–0.57, a key ratio for detecting carpal collapse and instability.
Normal Yune Soft Tissue Index Size on Radiography
Learn the normal Yune Soft Tissue Index threshold on PA hand radiography, its clinical significance, and measurement technique for detecting acromegaly.
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