What's the difference between anteversion and retroversion?
Anteversion
Definition:
(n.) A displacement of an organ, esp. of the uterus, in such manner that its whole axis is directed further forward than usual.
Example Sentences:
(1) The measurement mean for anteversion among these specimens was 7.4 degrees with a range from -10.8 degrees (retroversion) to 22.1 degrees.
(2) These formulae facilitate preparation of computer programs and tables for the routine clinical determination of the anteversion and cervico-diaphyseal angles.
(3) The mean amount of anteversion for the hips in both Groups I and II was less than the predicted mean amount for individuals of the same age.
(4) Endogenous factors such as acetabular dysplasia, increased anteversion of the femoral neck, capsular laxity support the genetic theory but they are neither constant nor necessary and are only facilitating factors.
(5) Low-dose transaxial tomography is a technique that can produce cross-sectional images of the hips and femurs in children to permit calculation of the angle of femoral anteversion.
(6) A more accurate method for both defining the axis of the femoral neck and measuring femoral anteversion is described and recommended for clinical use.
(7) (7) No relation of femoral anteversion to social class, order in family, parental age at birth of child, birth weight and presentation.
(8) The femoral anteversion in 20 adult dried femora and 40 femora in 20 children was measured by the Magilligan method, the authors' method and the conventional CT method.
(9) A one-stage, combined operative procedure for reduction of congenitally dislocated hips in older children consists of shortening of the femur; open reduction by an inferior approach to the joint; reconstruction of the acetabular roof; correction of anteversion of both the femoral neck and the neck-shaft angle; anterior transposition of the iliopsoas muscle.
(10) Measurements included the degree of anteversion of the femoral neck and the acetabulum and the diameter and depth of the acetabulum.
(11) Clearly measurement of hip rotation in extension alone does not provide a dependable indication of femoral anteversion in children with intoeing gait; rotation in flexion also needs to be measured.
(12) The degree of femoral anteversion in a group of obese adolescent children and a group of adolescent children of normal weight was determined by either magnetic resonance imaging or computerized axial tomography.
(13) We discuss the unanswered question, if torsion deformities will be spontaneously corrected by growth-dependent modification of the anteversion of the femoral neck alone or by detorsion of the diaphysial femur too.
(14) The method of direct measurement of the anteversion angle during operation was described.
(15) The horizontal lateral roentgenogram simulates the position of the upright human stance, and thus, depicts malocclusion, which may be seen when anteversion is present.
(16) To assess accurately the degree of anteversion of the acetabular component following total hip arthroplasty, the radiologist must obtain a view with the central ray directed over the hip, and not rely solely on frontal views of the pelvis.
(17) This study demonstrated geometrically why the currently practiced computerized-tomography method of selecting the points that are used to define the axis of the femoral neck is not consistent with geometrical definitions of anteversion.
(18) A method of classification based upon increase of the anteversion and valgus deformity of the upper femur associated with a dysplastic acetabulum and subluxation of the femoral head demonstrates 4 main groups: I or II in patients 1 to 3 years of age; III, patients approximately 2 years of age; IV, patients with absolute contraindication for surgical intervention.
(19) It is concluded that patients who suffer such dislocated hips belong at one extreme of the normal population, having either reduced femoral anteversion or even retroversion, and that this anatomical feature selects towards hip dislocation rather than to injury of the femoral shaft, knee or tibia during the appropriate type of accident.
(20) Unstable hips in the children with congenital hip dysplasia demonstrated anterior and superior acetabular deficiency with increased acetabular anteversion.
Retroversion
Definition:
(n.) A turning or bending backward; also, the state of being turned or bent backward; displacement backwards; as, retroversion of the uterus.
Example Sentences:
(1) The measurement mean for anteversion among these specimens was 7.4 degrees with a range from -10.8 degrees (retroversion) to 22.1 degrees.
(2) Five shoulders had a posterior opening-wedge osteotomy of the scapular neck to correct the excessive retroversion of the glenoid cavity.
(3) Such observations may conceal the fact that the amine N-oxide has undergone a sequence of deoxygenation and oxygenation reactions only to revert to the parental form and be excreted as such--a process that we propose to call metabolic retroversion.
(4) In the first years of its use, operative laparoscopy for uterine pathology was employed in the surgical treatment of myomas and in the correction of uterine retroversion (hysteropexy).
(5) The retroversion would create more difficulty in emptying.
(6) A method for assessing the retroversion angle of the humeral prosthesis in total shoulder arthroplasty is presented.
(7) It is concluded that patients who suffer such dislocated hips belong at one extreme of the normal population, having either reduced femoral anteversion or even retroversion, and that this anatomical feature selects towards hip dislocation rather than to injury of the femoral shaft, knee or tibia during the appropriate type of accident.
(8) Caesarean section made it possible to deliver a child weighing 1910 g. There were no adhesions found behind the uterus to fix it in retroversion.
(9) Three dimensional pictures are presented from the horizontal, backward tilt (retroversion) and forward tilt (anteversion) projections as well as the projection of the base of the skull, which yield most information.
(10) Our conclusions based on this study were that 1) specific therapy in the form of rotator cuff strengthening should be the initial form of treatment in patients with posterior shoulder instability, 2) soft tissue surgery has a high rate of recurrence, 3) the return to sports is variable, 4) there appears to be an increased incidence of glenoid retroversion in this patient population, and 5) the incidence of posttraumatic arthritis is low.
(11) The authors report a case of retroversion of the uterus with anterior sacculation that carried on to the 34th week of pregnancy without any functional troubles.
(12) Femoral neck retroversion was not present clinically in any of the patients examined, and so appears to be quite rare.
(13) It is concluded that with the arm in the correct position measurements of humeral head retroversion can be performed with this method with high accuracy.
(14) An instrument is designed for the anatomic angle of retroversion of the humeral component for nonconstrained shoulder joint arthroplasty.
(15) The 95% two-tail confidence interval for humeral head retroversion was 30 degrees-35 degrees for the dominant side and 26 degrees-31 degrees for the nondominant side.
(16) However, a symmetrical rotation of the hip joints conditions a retroversion of the pelvic girdle which explains the horizontalisation of the upper sacral plateau.
(17) Humeral head retroversion and shoulder rotation in both the frontal and scapular plane were studied in 34 patients with anterior glenohumeral instability.
(18) Laparoscopic uterine suspension is an effective method of correcting symptomatic uterine retroversion.
(19) On the first pelvic examination at the Infertility Clinic, the uterus was of normal size, retroversion and rather fixed with 0.5 cm firm nodule at its posterior surface.
(20) We examined the value of ultrasound to determine the retroversion of the humerus in an experimental and clinical study.