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Transtibial Initial Alignment

The document describes the initial alignment parameters for various stump lengths in prosthetic fitting, detailing flexion angles, placements, and orientations of the prosthetic components. It categorizes stumps into short, medium, and long based on their anatomical lengths and specifies corresponding adjustments for optimal alignment. Key considerations include medial and lateral alignments, flexion angles, and adjustments for different heel heights.

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2 1/2 ML 1/2 ML 1/2AP1/2AP MEDIAL FOOTLINE LINEOFPROGRESSION LM TT INITIAL ALIGNMENT: TRANSVERSAL VIEW 22-25mm II - PARALLEL II II A P II MEDIALWALL 5-7°
3 SHORT STUMP: LESS THAN 1/3 OF THE ANATOMICAL LENGTH; NORMAL POSITION: ABDUCTION = VALGUM MEDIUM STUMP: FROM 1/3 TO 2/3 OF THE ANATOMICAL LENGTH; NORMAL POSITION: NEUTRAL MEDIO-LATERAL PLACEMENT OF PP CUP 5 - 10 mm 0 mm 5 - 10 mm L M TT INITIAL ALIGNMENT: ANTERIOR VIEW LONG STUMP: MORE THAN 2/3 OF THE ANATOMICAL LENGTH; NORMAL POSITION: ADDUCTION = VARUM
4 SHORT STUMP FLEXION : 10°-15° MEDIUM STUMP FLEXION : 5°-7° 22- 25 mm30- 35 mm 22- 25 mm ANTERO-POSTERIOR PLACEMENT OF THE PP CUP TT INITIAL ALIGNMENT: MEDIAL OR LATERAL VIEW LONG STUMP FLEXION : 0°- 5°
5 NEUTRAL TT INITIAL ALIGNMENT: MEDIAL OR LATERAL VIEW HIGH HEEL = PLANTAR FLEXION NO HEEL = DORSAL FLEXION VERTICALITY OF THE TUBE ACCORDING TO HEEL HEIGHT
6 SUPINATION = VARUMPRONATION = VALGUM NEUTRAL TF INITIAL ALIGNMENT: ANTERIOR VIEW VERTICALITY OF THE TUBE ACCORDING TO SOLE CONDITION
7 TUBE IS VERTICAL MEDIUM STUMP BRIM IS HORIZONTAL POSITION IS NEUTRAL CUP IS HORIZONTAL PLUMBLINE IS IN THE CENTER HEIGHTISCORRECT TT INITIAL ALIGNMENT: ANTERIOR & POSTERIOR VIEW
8 TUBE IS VERTICAL FOOT MEDIALISATION 5-10 mm BRIM IS HORIZONTAL ADDUCTION OF THE SOCKET CORRESPONDS WITH THE VALGUM OF THE STUMP LATERALISATION 5-10mm CUP IS HORIZONTAL LONG STUMP TT INITIAL ALIGNMENT: ANTERIOR & POSTERIOR VIEW
9 TUBE IS VERTICAL FOOT LATERALISATION 5-10 mm BRIM IS HORIZONTAL ABDUCTION OF THE SOCKET CORRESPONDS WITH THE VARUM OF THE STUMP MEDIALISATION 5-10mm CUP IS HORIZONTAL SHORT STUMP TT INITIAL ALIGNMENT: ANTERIOR & POSTERIOR VIEW
10 TUBE IS VERTICAL 1/2 AP FLEXION = 5° CUP IS HORIZONTAL 1/31/31/3 MEDIUM STUMP ANTERIORISATION : MEDIUM AND LONG STUMPS - 22-25 mm SHORT STUMP - 30-35 mm TT INITIAL ALIGNMENT: LATERAL VIEW