Normal Distal Tibial Angle Size on Radiography
Normal distal tibial angle on AP and mortise radiography ranges from 45–65°, a key measure for ankle alignment assessment.
Musculoskeletal
142 entries · Page 2 of 5
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Normal Djian-Annonier's Angle Size on Radiography
Normal Djian-Annonier's angle on lateral foot radiography measures 120–130°, a key reference for assessing foot arch morphology.
Normal Dublin's Distance Size: Radiography, CT & MRI
Normal Dublin's Distance ranges 2–5 mm (mandible–atlas) and 9–12 mm (mandible–axis) on lateral cervical imaging across radiography, CT, and MRI.
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Normal Elbow Carrying Angle Size on Radiography
Normal elbow carrying angle on radiography measures 154–178°, with deviations indicating cubitus valgus or varus deformity in clinical practice.
Normal Elbow Joint Space Size on Radiography
Normal elbow joint space measures up to 3 mm on lateral radiography; values exceeding this threshold may indicate effusion or joint pathology.
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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 Femoral Neck Anteversion by Age: X-ray, CT, MRI
Normal femoral neck anteversion decreases from 30–50° at birth to ~18° in adults; learn measurement thresholds across radiography, CT, and MRI.
Normal Femoral Neck Torsion Angle Size on CT
Normal femoral neck torsion angle on CT ranges from 34–40° in newborns, with values declining through childhood into adulthood.
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.
Normal Fibular Angle Size on Radiography
Normal fibular angle on AP and mortise ankle radiographs ranges from 43° to 63°, a key measurement for assessing fibular length and ankle stability.
Normal First Metatarsal Declination Angle Size on Radiography
The normal first metatarsal declination angle is 21° on lateral radiography, a key measurement for evaluating forefoot biomechanics and deformity.
Normal Fischgold's Bimastoid Line Size on X-ray, CT, MRI
Normal Fischgold's bimastoid line measurement: the odontoid tip should lie less than 10 mm above this craniometric line on X-ray, CT, or MRI.
Normal Fowler-Philips Angle Size on Radiography
The normal Fowler-Philips angle measures 45–75° on lateral foot radiography, a key parameter for assessing Haglund deformity and heel pathology.
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Normal Gissane Critical Angle Size on Radiography
Normal Gissane critical angle on lateral radiograph measures 120–145°, a key calcaneal landmark for detecting intra-articular fractures.
Normal Glenohumeral Joint Space Size on Radiography
Normal glenohumeral joint space measures 4–5 mm on AP radiography; values outside this range suggest arthritis, effusion, or instability.
H
Normal Hallux Valgus Angle Size on Radiography
Learn the normal and abnormal hallux valgus angle on weight-bearing AP radiography, with clinical thresholds and measurement technique pearls.
Normal Harris Line Measurements: Cervical Radiography, CT, MRI
Normal Harris line measurements include basion-odontoid and basion-posterior axial line distances of less than 12 mm on lateral cervical imaging.
Normal Heel Pad Thickness on Radiography
Normal heel pad thickness on lateral radiograph measures less than 23 mm; values above this threshold suggest acromegaly or systemic pathology.
Normal Hibbs Angle Size on Radiography: Foot Reference
The normal Hibbs angle on lateral foot radiography is 130°, a key measurement for assessing forefoot and hindfoot alignment in clinical practice.
Normal Hilgenreiner's Epiphyseal Angle Size on Radiography
Normal Hilgenreiner's epiphyseal angle measures less than 60° on AP pelvis radiography, a key threshold in pediatric hip dysplasia assessment.
Normal Hip Alpha Angle Size on MRI: Reference Guide
The normal hip alpha angle on MRI is less than 55°; values at or above this threshold indicate cam-type femoroacetabular impingement.
Normal Hip Alpha Angle Size on Ultrasound
Learn the normal hip alpha angle threshold on ultrasound, its clinical significance in developmental dysplasia of the hip, and measurement technique pearls.
Normal Hip Neck Shaft Angle Size on Radiography
Normal hip neck shaft angle measures 110–140° on AP radiography, with deviations indicating coxa vara or valga and guiding orthopedic management.
Normal Hip Teardrop Distance Size on Radiography
Normal hip teardrop distance on AP radiography measures 6–11 mm, a key landmark for detecting joint effusion and femoral head migration.
Normal Humeral Angle Size on Radiography
Normal humeral angle on lateral elbow radiography measures 72–95°, a key parameter for detecting distal humeral fractures and malalignment.
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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.
Normal Intercarpal Joint Space Size on Radiography
Normal intercarpal joint space measures 1.5–2.0 mm on PA and lateral radiographs — a key reference for detecting carpal instability and arthritis.
Normal Intermetatarsal Angle Size on Radiography
Normal intermetatarsal angle values on AP radiography: <9° for 1st–2nd and <8° for 4th–5th metatarsals in foot alignment assessment.
Normal Interphalangeal Joint Space Size on Radiography
Normal interphalangeal joint space of the foot measures 1–2 mm on radiography; deviations indicate arthritis or injury requiring clinical correlation.
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