Normal Achilles Tendon Width Size on Radiography, Ultrasound, CT & MRI
Normal Achilles tendon width measures 4–9 mm on lateral imaging; values outside this range suggest tendinopathy, partial tear, or rupture.
Foot and Ankle
33 entries · Page 1 of 2
A
Normal Anterior Drawer Sign Size on Radiography
Learn the normal threshold for the anterior drawer sign on lateral ankle radiography, its clinical significance, and measurement technique for ATFL instability.
B
Normal Böhler's Angle Size on Radiography and CT
Normal Böhler's angle measures 25–40° on lateral radiography and CT, serving as a key indicator of calcaneal fracture depression and alignment.
C
Normal Calcaneal Pitch Angle Size on Radiography
Normal calcaneal pitch on lateral foot radiography ranges from 10–30°, a key measurement for evaluating flatfoot and cavus deformities.
Normal Calcaneus–2nd Metatarsal Angle Size on Radiography
Normal calcaneus–2nd metatarsal angle on AP radiography measures 12–18°, a key landmark for assessing hindfoot and forefoot alignment.
Normal CFL/ATFL Angle Size on MRI: Reference Values
The normal CFL/ATFL angle on MRI ranges from 70° to 140°, a key measurement for assessing lateral ankle ligament anatomy and injury.
D
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.
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.
F
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 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.
G
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.
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 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.
I
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.
Normal Intertarsal Joint Space Size on Radiography
Normal intertarsal joint space measures 2.0–2.5 mm on radiography; deviations may indicate arthritis, ligamentous injury, or coalition.
J
Normal Johnson Angle Size on Radiography: Foot & Ankle
The normal Johnson angle measures 92° on AP mortise radiography, a key reference for assessing tibiotalar alignment and ankle pathology.
K
Normal Kager's Triangle Size on Radiography
Learn the normal radiographic appearance of Kager's triangle, a key fat-pad space on lateral ankle X-ray used to detect Achilles tendon pathology.
M
Normal Metatarsophalangeal Angle Size on Radiography
Normal metatarsophalangeal angle values on weight-bearing AP radiography: <15° at the 1st MTP and <10° at the 5th MTP joint.
Normal Metatarsophalangeal Joint Space Size on Radiography
Normal metatarsophalangeal joint space measures 1–2 mm on radiography; values outside this range suggest arthritis, gout, or joint destruction.
T
Normal Talar Dome–Tibial Plafond Distance on Radiography
Learn the normal talar dome–tibial plafond distance on radiography, including the >3 mm varus stress threshold that indicates ankle instability.
Normal Talar Tilt Angle Size on Radiography
Learn normal talar tilt angle values on radiography, how to measure them, and when values exceeding 10° indicate lateral ankle instability.
Normal Talar Tilt Angle Size on Radiography
Normal talar tilt angle on AP mortise radiography measures less than 10°, a key threshold for detecting lateral ankle ligamentous instability.
Normal Talo-Calcaneal Index Size on Radiography
Learn the normal talo-calcaneal index on radiography, its clinical significance in flatfoot evaluation, and key measurement technique pearls.
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.
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