Limbs
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Limb Embryology |
Lower Limbs lag behind upper limbs
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Week 5 | Arm and Leg Buds appear
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Week 6 | Rapid lengthening and 1st sign of joints
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Week 7 | Continued Growth by the end will see that hand/foot bones
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Week 12 | Ossification of the Long Bones
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Diaphysis | Shaft of the long bone
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Metaphysis | Piece between the shaft and the end
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Epiphysis | Rounded end of the long bone
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Rhizomelic | Relating to the Shoulder or Hip joints
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Mesomelic | The forelimbs or lower legs
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Acromelic | End of the extremities
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Preaxial | Off the thumb
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Postaxial | Off the pinky
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Bones of the Hands | Carpals, Metacarpals, Phalanges
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Bones of the Feet | Tarsals, Metatarsals, Phalanges
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Joints of the hand | Metacarpophalangeal joint, Proximal interphalangeal joint, Distal interphalangeal joint.
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Hinge Joint | Knee, Flexion/extension in one plane
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Ball and Socket Joint | Should/hip, 3 dimension movement
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Compound Joint | Wrist/ankle, Motion in at least 2 major planes
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Minor Variants of the Hands/Feet | Single Palmar Crease, Deep Plantar crese, Absence of the flexion crease
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Minor Anomalies of the Hands/Feet | Clinodactyly, Tapered Fingers, Polydactyly, Syndactyly, Shortened fourth metacarpal, Overriding Toes, Hammertoes
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Minor Variants of the Joints | Loose jointed, Pes Planus, Bowleg, Knock-Knee
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Deformations of the Limbs | Tibial Bowing, Femoral Bowing, In-toeing/out-toeing
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Disruptions of the Limbs | Amniotic Bands
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Malformations of the Limbs | Macrosomia, Long Limbs, Limb asymmetry, Radial aplasia, Tibial aplasia, Phocomelia, Amelia
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Malformations of the Hands/Feet | Camptodactyly, Ulnar deviation of fingers, Triphalangeal thumb, Ectrodactyly, Monodactyly, Duplication of digits, Syndactyly, Polysndactyly, Localized overgrowth, Macrodactyly, Arachnodactyly, Broad thumbs and toes
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Malformations of the Joints | Joint Webbing, Joint contracturs (escobar), Genu Varum, Genu Valgum.
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