Spinal balance - Versionshistorie

Admin: /* Pelvic Tilt (PT=PI-SS) 12º ±6 (12-18º), bør være mindre end PI/2 (ca. 26°) */

2014-10-19T19:22:53Z

Pelvic Tilt (PT=PI-SS) 12º ±6 (12-18º), bør være mindre end PI/2 (ca. 26°)

← Ældre version		Versionen fra 19. okt. 2014, 21:22
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	=Pelvic Tilt (PT=PI-SS) '''12º''' ±6 (12-18º), bør være mindre end PI/2 (ca. 26°)=		=Pelvic Tilt (PT=PI-SS) '''12º''' ±6 (12-18º), bør være mindre end PI/2 (ca. 26°)=
	Angle between the line that joins the center of the femoral heads to the center of the S1 endplate and the '''vertical line through the center of the femoral heads'''. The pelvis can rotate around the femoral heads up to a certain limit. This rotation is characterised by the pelvic tilt (PT). When the pelvis rotates backwards (retroversion), PT increases~~; when the pelvis rotates forward (anteversion),~~ PT ~~decreases~~. An increase in PT after surgery is correlated with postoperative back pain. Restoration of a normal PT after surgery is correlated with good clinical outcome.		Angle between the line that joins the center of the femoral heads to the center of the S1 endplate and the '''vertical line through the center of the femoral heads'''. The pelvis can rotate around the femoral heads up to a certain limit. This rotation is characterised by the pelvic tilt (PT).
			*When the pelvis rotates backwards (retroversion), '''PT increases'''. PT increase with progressive kyphosis. An increase in PT after surgery is correlated with postoperative back pain.
			*When the pelvis rotates forward (anteversion), PT decreases.
			Restoration of a normal PT after surgery is correlated with good clinical outcome.

	=Sacral Slope (SS=PI-PT) '''40º''' ±9 (36-42º) bør være over PI/2 (ca. 26°)=		=Sacral Slope (SS=PI-PT) '''40º''' ±9 (36-42º) bør være over PI/2 (ca. 26°)=

Admin: /* Pelvic Incidence (PI=PT+SS) 52º ±12 (48-55º) */

2014-10-19T19:21:00Z

Pelvic Incidence (PI=PT+SS) 52º ±12 (48-55º)

← Ældre version		Versionen fra 19. okt. 2014, 21:21
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	=Pelvic Incidence (PI=PT+SS) '''52º''' ±12 (48-55º)=		=Pelvic Incidence (PI=PT+SS) '''52º''' ±12 (48-55º)=
	Angle between the perpendicular line drawn from the center of the S1 endplate and the line that joins the center of the femoral heads to the center of the S1 endplate. PI is an angle that is '''anatomically fixed''' and is specific for each individual. This angle does not change after adolescence. High pelvic incidence (PI) increases the risk of sagittal imbalance after spine fusion and is a predictive factor for degenerative spondylolisthesis.		Angle between the perpendicular line drawn from the center of the S1 endplate and the line that joins the center of the femoral heads to the center of the S1 endplate. PI is an angle that is '''anatomically fixed''' and is specific for each individual. This angle does not change after adolescence. High pelvic incidence (PI) increases the risk of sagittal imbalance after spine fusion and is a predictive factor for degenerative spondylolisthesis.
			*High grade PI allows maximum compensation (greater PT-range)
			*Low grade PI don-t allow compensation (small PT-range)


	[[Fil:Relation.png]]		[[Fil:Relation.png]]

Admin med 19. okt. 2014, 18:23

2014-10-19T18:23:00Z

← Ældre version		Versionen fra 19. okt. 2014, 20:23
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	Inflexion point: 46°		Inflexion point: 46°

			=Cobb's angle=
			[[Fil:Cobbangle.jpg]]

	=Anterior Vertebral Body Compression (AVBC)=		=Anterior Vertebral Body Compression (AVBC)=
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	=T1 Pelvic Angle (TPA)=		=T1 Pelvic Angle (TPA)=

	~~=Cobb's angle=~~
	~~[[Fil:Cobbangle.jpg]]~~

	=Spino-Sacral angle (SSA) 138° ±8°=		=Spino-Sacral angle (SSA) 138° ±8°=

Admin: /* Cobb's angle */

2014-10-19T18:22:13Z

Cobb's angle

← Ældre version		Versionen fra 19. okt. 2014, 20:22
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	=Cobb's angle=		=Cobb's angle=
	~~The angle from T1 to femoral heads and a line from femoral heads to the centre of S1 endplate~~.		[[Fil:Cobbangle.jpg]]

	=Spino-Sacral angle (SSA) 138° ±8°=		=Spino-Sacral angle (SSA) 138° ±8°=

Admin med 19. okt. 2014, 18:10

2014-10-19T18:10:40Z

← Ældre version		Versionen fra 19. okt. 2014, 20:10
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	=C7 plumbline=		=C7 plumbline=
			[[Fil:Plumbline.png]]

	=Sagittal Vertical Axis (SVA) < 3 cm=		=Sagittal Vertical Axis (SVA) < 3 cm=
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	[[Fil:Fig3.png]]		[[Fil:Fig3.png]]

	~~[[Fil:Plumbline.png]]~~

	[[Fil:Curvat.png]]		[[Fil:Curvat.png]]

Admin med 19. okt. 2014, 18:09

2014-10-19T18:09:50Z

@@ Linje 1: / Linje 1: @@
 =C7 plumbline=
@@ Linje 22: / Linje 29: @@
 Inflexion point: 46°
 =Thoracolumbar kyphosis (TLK)=

Admin: /* Cobb-Lippman technique */

2014-10-19T17:58:27Z

Cobb-Lippman technique

← Ældre version		Versionen fra 19. okt. 2014, 19:58
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	=Cobb-Lippman technique=		=Cobb-Lippman technique=
			Skoliosen måles i coronal- eller sagittalplanet

			=Vertebral rotation=
			Vurderes med Nash/Moe metoden, se om pediklen på den ene side "forsvinder".

			=Risser sign grading system=
			Skeletal maturity

			=Rib Vertebral Angle (RVA, Metha angle)=
			Vinklen imellem en linie gennem costa og sternum, RVA-differencen < 20 = non progressive curve

	=Cervical Lordosis (CL) '''30º''' (20-40º)=		=Cervical Lordosis (CL) '''30º''' (20-40º)=

Admin: /* Sagittal Vertical Axis (SVA) < 3 cm */

2014-10-19T17:52:15Z

Sagittal Vertical Axis (SVA) < 3 cm

← Ældre version		Versionen fra 19. okt. 2014, 19:52
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	=Sagittal Vertical Axis (SVA) < 3 cm=		=Sagittal Vertical Axis (SVA) < 3 cm=
	Used to evaluate the global sagittal balance. Sagittal translation of C7 plumb line. Sagittal distance between the vertical line through the center of C7 body (C7 plumbline) and the vertical line through the posterosuperior corner of the S1 endplate. An abnormal sagittal vertical axis (SVA) after fusion have a higher risk of adjacent segment degeneration.		Used to evaluate the global sagittal balance. Sagittal translation of C7 plumb line. Sagittal distance between the vertical line through the center of C7 body (C7 plumbline) and the vertical line through the posterosuperior corner of the S1 endplate. An abnormal sagittal vertical axis (SVA) after fusion have a higher risk of adjacent segment degeneration.

			=Cobb-Lippman technique=

	=Cervical Lordosis (CL) '''30º''' (20-40º)=		=Cervical Lordosis (CL) '''30º''' (20-40º)=

Admin med 19. okt. 2014, 17:48

2014-10-19T17:48:51Z

← Ældre version		Versionen fra 19. okt. 2014, 19:48
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	=C7 plumbline ~~<3 cm~~=		=C7 plumbline=
	~~Used to evaluate the global sagittal balance.~~

	=Sagittal Vertical Axis (SVA)=		=Sagittal Vertical Axis (SVA) < 3 cm=
	Sagittal translation of C7 plumb line. Sagittal distance between the vertical line through the center of C7 body (C7 plumbline) and the vertical line through the posterosuperior corner of the S1 endplate. An abnormal sagittal vertical axis (SVA) after fusion have a higher risk of adjacent segment degeneration.		Used to evaluate the global sagittal balance. Sagittal translation of C7 plumb line. Sagittal distance between the vertical line through the center of C7 body (C7 plumbline) and the vertical line through the posterosuperior corner of the S1 endplate. An abnormal sagittal vertical axis (SVA) after fusion have a higher risk of adjacent segment degeneration.

	=Cervical Lordosis (CL) '''30º''' (20-40º)=		=Cervical Lordosis (CL) '''30º''' (20-40º)=
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	=Apex L4 (L2-L5)=		=Apex L4 (L2-L5)=

			=L5 incidence angle (L5I)=
			Måles som PI, bliver låst efter en fusion. Korrelation med outcome efter operation for højgrads spondylo

			=Lumbosacral angle (LSA)=
			Mellem S1- og L5-endepladen. Korrelation med outcome efter operation for højgrads spondylo

	=Pelvic Incidence (PI=PT+SS) '''52º''' ±12 (48-55º)=		=Pelvic Incidence (PI=PT+SS) '''52º''' ±12 (48-55º)=
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	The angle from T1 to femoral heads and a line from femoral heads to the centre of S1 endplate.		The angle from T1 to femoral heads and a line from femoral heads to the centre of S1 endplate.

	=Spino-Sacral angle (SSA) ~~135~~=		=Spino-Sacral angle (SSA) 138° ±8°=
	The angle between the sacral plate and the line connecting the centroid of C7 vertebral body and the midpoint of the sacral ~~plate. Is the angle between the sacral plateau and a line drawn from the centre of the C7 vertebral body and the centre of the upper S1 end~~ plate.		The angle between the sacral plate and the line connecting the centroid of C7 vertebral body and the midpoint of the sacral plate.

	=Figurer=		=Figurer=
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	[[Fil:Curvat.png]]		[[Fil:Curvat.png]]

			=Lumbar instability/translation=
			*Skred > 4,5 mm eller hvis skreddet udgør mere end 15% af corpuslængden.
			*Endepladevinkel > 22°
			*Funktionsoptagelse: skred > 4,5 mm, den samlede ledskred > 15%, vinkelsum > 20° L4/L5 eller 25° L5/S1
			*Meyerding grading: grad 5 (spondyloptosis: L5 ligger under S1)

	=Clinical imbalance=		=Clinical imbalance=

Admin: /* C7 plumbline <3 cm */

2014-10-19T17:32:38Z

C7 plumbline <3 cm

← Ældre version		Versionen fra 19. okt. 2014, 19:32
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	=C7 plumbline <3 cm=		=C7 plumbline <3 cm=
			Used to evaluate the global sagittal balance.

	=Sagittal Vertical Axis (SVA)=		=Sagittal Vertical Axis (SVA)=