scholarly journals Fresh Cadaveric Study of the Distances between the Deep Plantar Arch and the Lesser Metatarsals at Risk During Osteotomy of the Lesser Metatarsals

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0046
Author(s):  
Ichiro Tonogai ◽  
Ichiro Tonogai
Keyword(s):  
Sagittal Plane ◽  
External Iliac Artery ◽  
Longitudinal Axis ◽  
Forefoot Deformity ◽  
Computed Tomography Images ◽  
Plantar Aspect ◽  
Distal Epiphysis ◽  
Second Metatarsal ◽  
Line Passing ◽  
Enhanced Computed Tomography

Category: Midfoot/Forefoot Introduction/Purpose: Osteotomy of the lesser metatarsals is useful to treat forefoot deformity. Although there is the possibility that some arteries supplying the lesser metatarsals are injured during osteotomy, there are few informations about the distances from the deep plantar arch to the lesser metatarsals. This study aimed to identify the distances from the deep plantar arch to the lesser metatarsals and to reveal how osteotomy of the lesser metatarsals might injure the deep plantar arch. Methods: Twenty fresh cadaveric feet were injected with barium through the external iliac artery, and enhanced computed tomography images were assessed. The distance between the deep plantar arch and each lesser metatarsal was measured on both axial and sagittal images. Results: The distances between the deep plantar arch and the second, third, and fourth metatarsals on the axial plane were 0.5, 2.2, and 2.8 mm, respectively. The distances from the distal epiphysis to the line passing through the deep plantar arch perpendicular to the longitudinal axis of the lesser metatarsal on the sagittal plane were 47.0, 45.7, and 46.4 mm, respectively, and those from the proximal epiphysis were 23.0, 21.0, and 18.6 mm, respectively. The deep plantar arch coursed at the level of the middle third, proximal to this third in 11/20 (55.0%), 7/20 (35.0%), and 5/16 (31.2%) feet, respectively. Conclusion: This study suggested that overpenetration into the medial-plantar direction of the second metatarsal or the proximal-plantar direction of the fourth metatarsal during the shaft or proximal osteotomy might injure the deep plantar arch easily. This study also suggested that on the plantar aspect, the shaft or proximal osteotomy about 45-47 mm proximal to the distal epiphysis of the lesser metatarsal or 18-23 mm distal to the proximal epiphysis might damage blood flow of the deep plantar arch.

Examination of the Origin and Branching Direction of the Anterior Medial Malleolar Artery From the Anterior Tibial Artery: A Cadaveric Study

2018 ◽  
Vol 12 (2) ◽  
pp. 167-171 ◽  
Author(s):  
Ichiro Tonogai ◽  
Fumio Hayashi ◽  
Yoshihiro Tsuruo ◽  
Koichi Sairyo
Keyword(s):  
Ankle Joint ◽  
Sagittal Plane ◽  
External Iliac Artery ◽  
Longitudinal Axis ◽  
Cadaveric Study ◽  
Ankle Arthroscopy ◽  
Anterior Tibial Artery ◽  
Tibial Artery ◽  
Anterior Tibial ◽  
Branching Point

Background. This study characterized the anterior medial malleolar artery (AMMA) branching from the anterior tibial artery (ATA) to identify problems in anterior ankle arthroscopy possibly contributing to injury to the AMMA. Methods. Barium was injected into 12 adult cadaveric feet via the external iliac artery and the origin and branching direction of the AMMA were identified on computed tomography. Results. The AMMA originated from the level of the ankle joint and below and above the ankle joint line (AJL) in 4 (33.3%), 6 (50.0%), and 1 (8.3%) specimen, respectively. Mean distance from the AJL to the branching point of the AMMA on the sagittal plane was 2.5 mm distal to the AJL. Mean angle between the distal longitudinal axis of the ATA and AMMA was 83.2°. Conclusions. This study established the origin and branching of the AMMA from the ATA. The AMMA should be examined carefully during ankle arthroscopy. Levels of Evidence: Level IV: Cadaveric study

The Origin of the Anterior Lateral Malleolar Artery From the Anterior Tibial Artery: A Fresh Cadaveric Study

2019 ◽  
Vol 13 (1) ◽  
pp. 69-73
Author(s):  
Ichiro Tonogai ◽  
Fumio Hayashi ◽  
Yoshihiro Tsuruo ◽  
Koichi Sairyo
Keyword(s):  
Ankle Joint ◽  
Sagittal Plane ◽  
External Iliac Artery ◽  
Cadaveric Study ◽  
Anterior Tibial Artery ◽  
Tibial Artery ◽  
Anterior Tibial ◽  
Branching Point ◽  
Enhanced Computed Tomography ◽  
Distal Direction

The anterior lateral malleolar artery (ALMA), which usually originates from the anterior tibial artery (ATA), courses transversely and laterally, passing under the extensor digitorum longus and peroneus tertius tendons. Variations in the origin of the ALMA from the ATA can occur. Branches of the ATA, such as the ALMA, are prone to pseudoaneurysm. This study reviewed the origin of the ALMA from the ATA and aimed to identify problems in anterior ankle arthroscopy that might cause injury to the ALMA. Enhanced computed tomography scans of 24 feet of 24 fresh cadavers (13 males, 11 females; average age 78.1 years) were assessed. The limb was injected with barium sulfate suspension through the external iliac artery; the origin of the ALMA from the ATA on the sagittal plane was recorded. The origin was at the ankle joint level in 4 specimens and below the ankle joint in 17 specimens. The distance from the ankle joint to the branching point of the ALMA on the sagittal plane was 5.2 mm distal to the joint. The level of origin of the ALMA from the ATA was established. Instruments should not be inserted from the distal direction when placing anterolateral portals. Levels of Evidence: Level IV, cadaveric study

Intraoperative angiography for visceral arteries originating from false lumen

2021 ◽  
pp. 021849232110414
Author(s):  
Shintaro Takago ◽  
Satoru Nishida ◽  
Yukihiro Noda ◽  
Yu Nosaka ◽  
Ryo Yamamura ◽  
...  
Keyword(s):  
Aortic Dissection ◽  
Aortic Arch ◽  
Circulatory Arrest ◽  
False Lumen ◽  
External Iliac Artery ◽  
Acute Type ◽  
Elephant Trunk ◽  
Intraoperative Angiography ◽  
Visceral Arteries ◽  
Enhanced Computed Tomography

A 70-year-old man had an acute type B aortic dissection 9 years before his admission. The last enhanced computed tomography that was performed revealed an aneurysm that extended from the ascending aorta to the aortic arch, associated with a chronic aortic dissection, which extended from the aortic arch to the left external iliac artery. His visceral arteries originated from the false lumen. We performed a total arch replacement with a frozen elephant trunk in the hybrid operating room. Immediately after the circulatory arrest termination, using intraoperative angiography, we verified that the blood supply to the visceral arteries was patent.

Evaluation of skin displacement in the equine neck

2014 ◽  
Vol 10 (3) ◽  
pp. 181-186 ◽  
Author(s):  
A. Bergh ◽  
A. Egenvall ◽  
E. Olsson ◽  
M. Uhlhorn ◽  
M. Rhodin
Keyword(s):  
Mixed Models ◽  
Sagittal Plane ◽  
Cervical Vertebrae ◽  
Statistical Significance ◽  
Longitudinal Axis ◽  
Joint Motion ◽  
Skin Marker ◽  
Significant Difference ◽  
Axis Parallel ◽  
Kinematic Studies

Kinematic studies, using reflective skin markers, are commonly used to investigate equine joint motion in equitation science and for rehabilitation purposes. In order to interpret the registrations accurately, the degree of skin displacement has been described for the limbs and back, but not yet for the neck. The aim of the present study was to measure sagittal plane skin displacement in the equine neck. Radiopaque skin markers were applied to the skin over the first six cervical vertebrae of six healthy horses. Latero-lateral radiographs were taken in three standardised neck positions in the sagittal plane: control (horizontal neck), ‘on the bit’ and ‘nose to carpus’. The scales of the images were normalised and calculation of skin displacement was done by use of a coordinate system, dividing the displacement along an x-axis parallel to the vertebra's longitudinal axis and a y-axis perpendicular to the x-axis. Mixed models analysis was employed to study the differences in distances in x- and y-directions, and statistical significance was set to PÃ0.05. Between control and ‘nose to carpus’ positions, there were significant differences in skin marker locations, relative to the underlying vertebrae, in the x-direction for C1-6, and in y-direction for C3-6. Between normal and ‘on the bit’ positions, there were significant difference in both x- and y-directions for C6. Differences in marker locations along x- and y-axes, respectively, were 3±9 mm and 44±14 mm. The outcome of this study indicates that skin displacement should be considered when investigating equine neck motion with skin marker methodology.

scholarly journals Morphological Manifestations of Human Locomotor Bipedality in Femur

2019 ◽  
Vol 8 (1) ◽  
pp. 96-102
Author(s):  
I. N. Yashina ◽  
A. V. Ivanov ◽  
S. V. Klochkova
Keyword(s):  
Factor Analysis ◽  
Musculoskeletal System ◽  
Sagittal Plane ◽  
Mechanical Load ◽  
The Body ◽  
Vertical Position ◽  
Support Functions ◽  
Medial Condyle ◽  
Distal Epiphysis ◽  
The Right

The aimis to study the structure of the femur of conditionally healthy modern people, as part of the link of the musculoskeletal system, providing bipedal locomotion.Material and methods.By the original osteometric method was measured 23 structures of 166 femoral  bones with full synostosis of epiphysis without evidence of bone pathology. After the introduction of the coefficient of proportionality for linear parameters and the calculation of confidence intervals for each of them, a multilevel factor analysis was carried out, separately for the right and left femoral bones by the maximum likelihood factor analysis method with Equamax normalized rotation.Results.Four levels of the structural organization, which characterized by asymmetry of factor loadings, are identified. The parameters forming the 1st level ensure the transfer of the mechanical load along the limb axis from the head through the intertrochantcric crest to the medial condyle. 2nd level parameters provide rotational movements at the knee joint. Parameters of the 3rd and 4th levels reflecting the function of the rotation of the leg in the hip joint when upright and maintaining the vertical position of the body in the sagittal plane.Conclusion.Thus, the human femur is a multilevel system with asymmetric participation of parameters in its formation. Femur, as part of the musculoskeletal system, has a distinct vertical structural differentiation, which is manifested in the dominance of the right limb in the implementation of the support functions at the level of the proximal epiphysis, and motor functions at the level of the distal epiphysis of the femur.

scholarly journals Feasibility study of transfacet sacroiliac screw fixation based on Mimics

2020 ◽  
Author(s):  
Yanping Din ◽  
Qudong Yin ◽  
Shuai Liu ◽  
Dong Li ◽  
Yongwei Wu ◽  
...  
Keyword(s):  
Sagittal Plane ◽  
Longitudinal Axis ◽  
Fixation Method ◽  
Exit Point ◽  
Sacroiliac Screw ◽  
Screw Channel ◽  
Line Parallel ◽  
Sacroiliac Screw Fixation ◽  
Scan Data ◽  
Anatomical Parameters

Abstract Background Sacroiliac screw (SIS) has become an effective internal fixation method for sacral fracture and sacroiliac joint dislocation. However, classic placement of SIS has some defects such as possibility of nerve injury with a learning curve and contraindications. An alternative to the classic placement of SIS is expected Objective To explore the feasibility of transfacet sacroiliac screw (TFSIS), so as to provide an alternative to the classic placement of SIS. Methods CT scan data of pelvis in 60 healthy adults including 30 males and 30 females with an average age of 45 years (range 20-70 years), were transferred into a PC. The anatomical parameters of screw channel of TFSIS were measured by simulating the placement of TFSIS by Mimics 16.0 software on the PC. Secondly, according to the anatomical parameters of each pelvis, 5.0 mm and 6.0 mm screws were used respectively to simulate the placement of TFSIS in 30 pelvises to observe the effect of placement. Results The length of screw channel was (10.84 ± 0.93) cm, the distance between the insertion point and the center of the superior facet of S1 was (1.14 ± 0.93) mm, the distance between the exit point and the upper -posterior border of acetabulum was (5.73 ± 2.57) mm, the anteversion angle between the central axis of the screw channel and the line parallel to the upper endplate of S1 was (53.96±3.94) °, the outward angle between the central axial of the screw channel and the longitudinal axis of the trunk was (47.4 7± 5.13)°, the safety angle in sagittal plane was (13.91 ± 2.92) °, the safety angle in coronal plane was (8.57 ± 1.63) °, the height was (11.91 ± 1.47) mm, and the width was (7.75 ± 0.89) mm. Within the channel for 5.0mm and 6.0mm screws accounted for 100%. Conclusions Placement of TFSIS with a diameter of 5.0-6.0 mm and a length of 90 mm is safe and feasible, which may be used as an alternative to the classic placement of SIS.

Sign in / Sign up

Export Citation Format

Share Document