A New Method for Measuring Angular Variations Caused by High Heels in Sagittal Plane of Tibiotalar and Metatarsophalangeal Joints During Gait

2021 ◽  
pp. 208-216
Author(s):  
Jose S. Velázquez ◽  
Francisco L. Sáez-Gutiérrez ◽  
Amanda Robau-Porrúa ◽  
Arsenio M. Iznaga-Benítez ◽  
Francisco Cavas
Keyword(s):  
Sagittal Plane ◽  
New Method ◽  
High Heels ◽  
Metatarsophalangeal Joints

scholarly journals New Affordable Method for Measuring Angular Variations Caused by High Heels on the Sagittal Plane of Feet Joints during Gait

2021 ◽  
Vol 11 (12) ◽  
pp. 5605
Author(s):  
Jose S. Velázquez ◽  
Arsenio M. Iznaga-Benítez ◽  
Amanda Robau-Porrúa ◽  
Francisco L. Sáez-Gutiérrez ◽  
Francisco Cavas
Keyword(s):  
Motion Tracking ◽  
Sagittal Plane ◽  
Range Of Movement ◽  
Heel Height ◽  
Temporal Variables ◽  
Optical Motion ◽  
High Heels ◽  
Spatio Temporal ◽  
Optical Motion Tracking ◽  
Metatarsophalangeal Joints

Gait is influenced by many factors, but one of the most prominent ones is shoe heel height. Optical motion tracking technology is widely used to analyze high-heeled gait, but it normally involves several high-quality cameras and licensed software, so clinics and researchers with low budgets cannot afford them. This article presents a simple, effective technique to measure the rotation angles on the sagittal plane of the ankle (tibiotalar) and toe (metatarsophalangeal) joints when no shoes (0 cm heel) and high-heeled shoes (2, 6 and 10 cm heels) are worn. The foot’s position was determined by a set of equations based on its geometry and video analysis techniques with free software (Tracker). An evaluation of the spatio-temporal variables confirmed observations from previous studies: increasing heel heights reduces gait cycle length and speed but does not change cadence. The range of movement at the tibiotalar joint progressively narrowed from 28° when no heel height was worn to 9° when a 10 cm heel was used, and these reductions ranged from 30° to 5° for metatarsophalangeal joints, respectively. This aligns with other authors’ previous studies, and confirms that the proposed method accurately measures kinematic ankle–foot set changes when wearing high heels.

scholarly journals Weight Bearing CT and Relative Orientation of Foot Bones: Effect of Loading and Heeled Shoes

2020 ◽  
pp. 10-14
Author(s):  
Sandu Elena Cerasela ◽  
Caravaggi Paolo ◽  
Durante Stefano
Keyword(s):  
Sagittal Plane ◽  
Cone Beam Ct ◽  
Young Subject ◽  
Weight Bearing ◽  
Cone Beam ◽  
Non Invasive ◽  
Foot Bones ◽  
Healthy Young Subject ◽  
Foot Posture ◽  
Metatarsophalangeal Joints

The purpose of this article is to determine the orientation and relative position of the foot bones in Weight Bearing CT, highlighting the effect of the load and the shoe with the heel. Thanks to a Cone Beam CT (OnSight 3D Extremity System, Carestream) equipment, three scans of the foot of a healthy young subject were carried out in three conditions: "unloading", "loading", and wearing a shoe with "heel". In order to assess the accuracy of the articular angles of the foot through non-invasive measurements, a measurement was performed by Gait-Analysis with passive markers in the same conditions. The effect of the "load" resulted in a significant alteration of the foot posture especially in the sagittal plane, with crushing of the longitudinal medial arch. The heeled shoe involves enormous deformations at the level of the metatarsophalangeal joints and the ankle.

Functional motion of the medial column joints of the foot during propulsion

1996 ◽  
Vol 86 (10) ◽  
pp. 474-486 ◽  
Author(s):  
RD Phillips ◽  
EA Law ◽  
ED Ward
Keyword(s):  
Pilot Study ◽  
Sagittal Plane ◽  
Metatarsophalangeal Joint ◽  
Plane Motion ◽  
Interphalangeal Joint ◽  
Two Dimensional ◽  
First Metatarsophalangeal Joint ◽  
First Metatarsal ◽  
First Ray ◽  
Metatarsophalangeal Joints

Motion in the ankle, subtalar, midtarsal, and first metatarsophalangeal joints has been well documented. However, motion in the first metatarsocuneiform, the first cuneonavicular, and the first interphalangeal joint has not been addressed. Motion in these joints has not been documented because many believe that little motion occurs at these joints, and because of the difficulty in assessing motion at these joints. Using two-dimensional motion analysis, the authors present sagittal plane ranges of motion occurring in the first metatarsophalangeal joint, the first metatarsocuneiform joint, the medial cuneonavicular joint, and the first interphalangeal joint during the propulsive period of gait. This pilot study indicates that sagittal plane motion between the navicular and calcaneus and between the first metatarsal and first cuneiform are very mild and inconsistent. However, plantarflexion motion between the first cuneiform and the navicular is significant and comprises most of the plantarflexion motion of the first ray during propulsion. Motion in the first interphalangeal joint is slight during the first 80% of the propulsive period but shows slight-to-moderate dorsiflexion during the last 20% of the propulsive period of gait.

scholarly journals A New Method for Reduction and Stabilization of the Distal Tibiofibular Syndesmosis

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0037
Author(s):  
Andres E. O’Daly Baquero ◽  
Timothy R. Kreulen ◽  
Babar Shafiq ◽  
Erik A. Hasenboehler ◽  
Alfred Pisano
Keyword(s):  
Sagittal Plane ◽  
External Rotation ◽  
Statistical Significance ◽  
Peak Torque ◽  
Conventional Technique ◽  
Ct Images ◽  
New Method ◽  
Rotational Stability ◽  
Torsional Resistance ◽  
Significant Difference

Category: Ankle; Trauma Introduction/Purpose: Fixation strategies for distal tibiofibular syndesmotic injuries are associated with risk of malreduction. We describe a new method of reduction and fixation of the syndesmosis with two suture buttons placed through a single sagittal tunnel through the fibula and across the tibia at the attachment sites of the anterior and posterior-inferior tibiofibular ligaments. Methods: Eighteen frozen cadaveric lower leg specimens were divided in two groups of nine and subjected to syndesmotic injury followed by reduction and fixation. Nine were repaired with the new method and 9 with the conventional method. Post-reduction CT images were obtained and compared to pre-injury CT images to assess quality of reduction. Specimens were then tested on an MTS machine and loaded between +\-5Nm at 0.5Hz of internal and external rotation for 500 cycles. Cyclic loading was paused at 0, 100, and 500 cycles to assess torsional resistance, fibular rotation, and fibular translation with the foot first internally rotated 10 degrees and then externally rotated 15 degrees. Peak torque and translation of the fibula was measured. Results: A statistically significant difference was detected between groups, with the new method of fixation showing less lateral translation of the fibula. Data that did not reach statistical significance showed a trend towards decreased post reduction translation in the sagittal plane and improved rotational alignment with the new method. Decreased fibular rotation that reached statistical significance was noted in the new technique with internal rotation at 0, 100 and 500 cycles and during external rotation at 100 and 500 cycles. No differences were noted for torsional resistance or fibular translation between groups. Conclusion: The new method of syndesmotic fixation facilitated reduction of the syndesmosis that resulted in improved alignment, and better rotational stability compared with the conventional technique. This may be a reliable alternative to current methods of syndesmosis reduction and fixation.

Kinematics of the Capitolunate Joint in the Sagittal Plane

1998 ◽  
Vol 23 (3) ◽  
pp. 410-412 ◽  
Author(s):  
J. L. LOEWEN ◽  
M. A. PIRELA-CRUZ ◽  
G. L. LUCAS
Keyword(s):  
Sagittal Plane ◽  
Reference Points ◽  
New Method ◽  
Dorsal Intercalated Segment Instability

A new method of assessing capitolunate alignment is presented. Three anatomical carpal reference points were evaluated on lateral radiographs using triangulation. Connecting these three points forms a triangle with dorsal, palmar and somewhat vertical sides. One hundred normal lateral wrist radiographs were measured. The overall dorsal limb (DL) to palmar limb (PL) ratio was found to be 0.74 (SD 0.07) over a range of 40° extension to 42° flexion. As the DL to PL ratio approached 1.0, a dorsal intercalated segment instability (DISI) deformity developed. Conversely, as the DL to PL ratio approached 0.5, a palmar intercalated segment instability (PISI) occurred. This method appears useful for evaluating static lateral radiographs for intercalary carpal alignment and possibly instability.

Some Aspects of Funnel Chest Diagnosis in Children

2012 ◽  
Vol 19 (4) ◽  
pp. 54-57
Author(s):  
V. B Shamik ◽  
B. A Davud
Keyword(s):  
Sagittal Plane ◽  
New Method ◽  
Funnel Chest ◽  
Cavity Volume ◽  
Chest Deformity

Examination results for 294 children aged 7 days — 17 years with funnel chest deformity were presented. Anthropometric measuring of the chest was performed. New method for calculation of chest flattening index was used. New ways for the determination of deformity index, area of entrance to the cavity and cavity volume were suggested. Notion of «deformity coefficient» was introduced; local and diffuse types of funnel chest were identified. Dependence between the indices of chest deformity in sagittal plane, patient’s age and deformity severity was established.

Sagittal Plane Compensations for Artificially Induced Limitation of the First Metatarsophalangeal Joint

2004 ◽  
Vol 94 (3) ◽  
pp. 269-274 ◽  
Author(s):  
Christine Hall ◽  
Christopher J. Nester
Keyword(s):  
Sagittal Plane ◽  
Metatarsophalangeal Joint ◽  
Hallux Rigidus ◽  
First Metatarsophalangeal Joint ◽  
Hallux Limitus ◽  
Metatarsophalangeal Joints

This study was undertaken to establish whether reduced dorsiflexion at the first metatarsophalangeal joint affects sagittal plane kinematics at the ankle, knee, and hip. Twenty individuals with symptom-free metatarsophalangeal joints were studied as they walked with and without an insole designed to restrict first metatarsophalangeal joint dorsiflexion. Sagittal plane kinematics at the ankle, knee, and hip were compared in the two conditions. When walking with the insole, the ankle was more dorsiflexed during late midstance and less plantarflexed during propulsion, the knee was more flexed during midstance, and the hip was less extended during late midstance. This evidence of a link between the first metatarsophalangeal joint and the kinematics of the proximal joints demonstrates the potential for the clinical entities of hallux rigidus and hallux limitus to influence gait and justifies more detailed study of this relationship. (J Am Podiatr Med Assoc 94(3): 269–274, 2004)

Selective Sampling and Orientation of Non-Homogeneous Tissues

1968 ◽  
Vol 26 ◽  
pp. 98-99
Author(s):  
C. C. Clawson ◽  
L. W. Anderson ◽  
R. A. Good
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Light Microscopy ◽  
Random Sampling ◽  
New Method ◽  
Microscope Examination ◽  
Small Areas ◽  
Selective Sampling ◽  
Large Numbers ◽  
Specific Orientation

Investigations which require electron microscope examination of a few specific areas of non-homogeneous tissues make random sampling of small blocks an inefficient and unrewarding procedure. Therefore, several investigators have devised methods which allow obtaining sample blocks for electron microscopy from region of tissue previously identified by light microscopy of present here techniques which make possible: 1) sampling tissue for electron microscopy from selected areas previously identified by light microscopy of relatively large pieces of tissue; 2) dehydration and embedding large numbers of individually identified blocks while keeping each one separate; 3) a new method of maintaining specific orientation of blocks during embedding; 4) special light microscopic staining or fluorescent procedures and electron microscopy on immediately adjacent small areas of tissue.

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