The effect of gravity on the ligaments of the medial malleolus and its pronating effect on the tarsus

1978 ◽  
Vol 91 (1) ◽  
pp. 1-2
Author(s):  
George Bender
Keyword(s):  
Medial Malleolus

scholarly journals The Surgical Outcomes of Unstable Ankle Fractures in Patients Aged >65 Years

2021 ◽  
Vol 12 ◽  
pp. 215145932199776
Author(s):  
Adem Sahin ◽  
Anıl Agar ◽  
Deniz Gulabi ◽  
Cemil Erturk
Keyword(s):  
Surgical Outcomes ◽  
External Rotation ◽  
High Energy ◽  
Ankle Fractures ◽  
Medial Malleolus ◽  
Aofas Score ◽  
Non Union ◽  
The Mean ◽  
Medial Malleolus Fracture ◽  
Mechanism Of Trauma

Aim: To evaluate the surgical outcomes and complications of patients over 65 years of age, with unstable ankle fractures. Material and Method: The study included 111 patients (73F/38 M) operated on between January 2015 and February 2019 and followed up for a mean of 21.2 months (range, 6-62 months).Demographic characteristics, comorbidities, fracture type, and mechanisms of injury were evaluated. Relationships between postoperative complications and comorbidities were examined. In the postoperative functional evaluations, the AOFAS score was used and pre and postoperative mobilization (eg, use of assistive devices) was assessed. Results: The mean age of the patients was 70.5 ± 6.1 years (range, 65-90 years). The mechanism of trauma was low-energy trauma in 90.1% of the fractures and high-energy trauma in 9.9%. The fractures were formed with a SER injury (supination external rotation) in 83.7% of cases and bimalleolar fractures were seen most frequently (85/111, 76%).Complications developed in 16 (14.4%) patients and a second operation was performed in 11 (9.9%) patients with complications. Plate was removed and debridement was performed in 5 of 6 patients due to wound problems. Nonunion was developed in the medial malleolus in 4 patients. Revision surgery was performed because of implant irritation in 2 patients and early fixation loss in the medial malleolus fracture in one patient. Calcaneotibial arthrodesis was performed in 3 patients because of implant failure and ankle luxation associated with non-union. A correlation was determined between ASA score and DM and complications, but not with osteoporosis. The mean follow-up AOFAS score was 86.7 ± 12.5 (range, 36-100).A total of 94 (84.7%) patients could walk without assistance postoperatively and 92 (82.9%) were able to regain the preoperative level of mobilization. Conclusion: Although surgery can be considered an appropriate treatment option for ankle fractures in patients aged >65 years, care must be taken to prevent potential complications and the necessary precautions must be taken against correctable comorbidities.

scholarly journals The fibula and talus position difference in functional and mechanical ankle instability: MRI findings

2021 ◽  
Vol 29 (1) ◽  
pp. 230949902098457
Author(s):  
Chengjie Yuan ◽  
Genrui Zhu ◽  
Zhifeng Wang ◽  
Chen Wang ◽  
Xu Wang ◽  
...  
Keyword(s):  
Healthy Volunteers ◽  
Ankle Instability ◽  
Medial Malleolus ◽  
Mechanical Instability ◽  
Mri Findings ◽  
Functional Instability ◽  
Post Hoc Analysis ◽  
Ankle Stability ◽  
Post Hoc

Purpose: This study aimed to use MRI to evaluate the fibula and talus position difference in functional and mechanical ankle stability patients. Methods: 61 and 68 patients with functional and mechanical instability, and 60 healthy volunteers were involved. Based on the axial MRI images, the rotation of the talus was identified through the Malleolar Talus Index (MTI). The position relative to the talus (Axial Malleolar Index, AMI) and medial malleolus (Intermalleolar Index, IMI) were used to evaluated the displacement of the fibula. Results: Post hoc analysis showed that the values of malleolar talus index was significantly larger among mechanical instability (89.18° ± 2.31°) than that in functional instability patients (86.55° ±61.65°, P < 0.001) and healthy volunteers (85.59° ± 2.42°, P < 0.001). The axial malleolar index of the mechanical instability patients (11.39° ± 1.41°) were significantly larger than healthy volunteers (7.91° ± 0.83°) (P < 0.0001). There were no statistically significant differences in the above three indexes between the functional instability patients and healthy volunteers. Conclusion: The functional instability patients didn’t have a posteriorly positioned fibula and an internally rotated talus. The malleolar talus index was significantly larger among mechanical instability patients than that in functional instability patients. Increased malleolar talus index may become a new indirect MRI sign for identifying functional and mechanical instability patients.

The Medial Malleolus in Ankle Fractures

1980 ◽  
Vol 11 (3) ◽  
pp. 649-660 ◽  
Author(s):  
James Hughes
Keyword(s):  
Ankle Fractures ◽  
Medial Malleolus

The Safety of the Esmarch Tourniquet

Foot & Ankle ◽  
1993 ◽  
Vol 14 (5) ◽  
pp. 278-283 ◽  
Author(s):  
William C. Biehl ◽  
James M. Morgan ◽  
F. William Wagner ◽  
Rodney A. Gabriel
Keyword(s):  
Learning Curve ◽  
Clinical Application ◽  
Medial Malleolus ◽  
Foot And Ankle ◽  
Surgical Case ◽  
Significant Difference ◽  
Mean Pressure ◽  
Continued Use

The use of an Esmarch bandage as a tourniquet in surgery has been criticized. Many authors claim that the pressures under the Esmarch are inconsistent and may be extremely high. We have seen few, if any, problems from the use of an Esmarch in surgery of the foot and ankle. The purpose of this study was to evaluate the pressures generated under the Esmarch tourniquet in a situation that mimics its clinical application, and to determine whether pressures of appropriate magnitude and consistency are obtained in order to recommend its continued use in surgery. Ten volunteers performed numerous applications of the Esmarch. The number of wraps and the width of the Esmarch bandage used were varied. The Esmarch was applied as it would be for a surgical case. Pressures directly beneath the Esmarch were recorded 8 cm proximal to the distal tip of the medial malleolus. Considering all volunteers and all pressures generated, a 3-in Esmarch applied with three wraps gave a mean pressure (±SD) of 225 ± 46 mm Hg. A 3-in Esmarch applied with four wraps gave a mean pressure of 291 ± 53 mm Hg. A 4-in Esmarch applied with three wraps gave a mean pressure of 233 ± 35 mm Hg, and a 4-in Esmarch with four wraps gave a mean pressure of 284 ± 42 mm Hg. The maximum pressures generated by any individual were as follows: 3-in three wraps, 321 mm Hg; 3-in four wraps, 413 mm Hg; 4-in three wraps, 328 mm Hg; and 4-in four wraps, 380 mm Hg. There was no significant difference in the magnitude or consistency of pressures generated between the experienced and inexperienced wrappers. There did not appear to be a learning curve for the application of the Esmarch bandage. We conclude that an Esmarch bandage, used as a tourniquet, can generate safe and reliable pressures. Either a 3-in or 4-in Esmarch bandage applied above the ankle with three circumferential overlapping wraps consistently results in pressures that are in a safe range.

Posterior Instability of the Talus: An Anatomic Evaluation

Foot & Ankle ◽  
1989 ◽  
Vol 10 (1) ◽  
pp. 36-39 ◽  
Author(s):  
Marion C. Harper
Keyword(s):  
Internal Fixation ◽  
Cadaver Study ◽  
Lateral Radiograph ◽  
Medial Malleolus ◽  
Posterior Instability ◽  
Posterior Tibial ◽  
Malleolar Fractures ◽  
Posterior Malleolus ◽  
Supporting Structures

A cadaver study was conducted to evaluate the role of the posterior tibial margin or posterior malleolus, as well as medial and lateral supporting structures, in providing posterior stability for the talus. Posterior malleolar fractures consisting of approximately 30%, 40%, and 50% of the articular margin on the lateral radiograph were created in specimens that were then subjected to posterior stressing. No posterior talar subluxation was noted in any specimen. Repeat stressing following removal of the medial malleolus again revealed no subluxation in any specimen. The lateral supporting structures, primarily the posterior fibulotalar and fibulocalcaneal ligaments, appeared to be the key structures providing posterior talar stability. If the fibula is stable in an anatomic position, feared posterior instability of the talus would not appear to be an indication for internal fixation of posterior malleolar fractures.

scholarly journals Determination of the Optimal Syndesmosis Fixation Angle Using Mortise View of The Ankle Joint

2021 ◽  
Author(s):  
Oğuzhan Tanoğlu ◽  
İzzet Özay Subaşı ◽  
Mehmet Burak Gökgöz
Keyword(s):  
Ankle Joint ◽  
Articular Surface ◽  
Three Dimensional ◽  
Vertical Plane ◽  
Functional Results ◽  
Practical Method ◽  
Medial Malleolus ◽  
Significant Difference ◽  
Horizontal View ◽  
Mortise View

Background: Syndesmosis is an important soft tissue component supporting the ankle stability and commonly injured accompanying with ankle fractures. The accurate reduction and fixation of syndesmosis is essential to obtain better functional results. Therefore, we aimed to find a practical method using the mortise view of ankle to determine the optimal syndesmosis fixation angle intraoperatively. Methods: We randomly selected 200 adults (100 women and 100 men) between 18 - 60 years of age. Three-dimensional anatomical models of tibia and fibula were created using Materialise MIMICS 21. We created a best fit plane on articular surface of medial malleolus and a ninety degrees vertical plane to medial malleolus plane. We determined two splines on cortical borders of tibia and fibula distant from the most superior point of ankle joint in horizontal view. We created two spheres that fit to the predefined splines. The optimal syndesmosis fixation angle was determined measuring the angle between the line connecting the center points of spheres, and the ninety degrees vertical plane to medial malleolus plane. Results: We observed no statistically significant difference between gender groups in terms of optimal syndesmosis fixation angles. The mean age of our study population was 47.1 {plus minus} 10.5. The optimal syndesmosis fixation angle according to mortise view was found as 21 {plus minus} 4.3 degrees. Conclusions: We determined the optimal syndesmosis fixation angle as 21 {plus minus} 4.3 degrees in accordance with the mortise view of ankle. The surgeon could evaluate the whole articular surface of ankle joint with the medial and lateral syndesmotic space in mortise view accurately and at the same position syndesmosis fixation could be performed at 21 {plus minus} 4.3 degrees.

scholarly journals Posterior malleolar fractures. New classification and treatment algorithm

2020 ◽  
Vol 14 (3) ◽  
pp. 254-259
Author(s):  
Diego Yearson ◽  
Ignacio Melendez ◽  
Federico Anain ◽  
Santiago Siniscalchi ◽  
Juan Drago
Keyword(s):  
Posterior Approach ◽  
Treatment Algorithm ◽  
Case Series ◽  
Fracture Pattern ◽  
Joint Surface ◽  
Medial Malleolus ◽  
New Classification ◽  
Level Of Evidence ◽  
Malleolar Fractures ◽  
Posterior Malleolus

Objective: This study proposes a new classification of posterolateral malleolar fractures and a treatment algorithm. Methods: We divided the posterolateral malleolus, which we considered as the posterior malleolus, from the posteromedial one, which we considered as being part of the medial malleolus fracture. The experience with 77 patients treated from February 2017 to February 2020 was assessed. All of them were assessed by frontal and profile radiographies and computed tomography (CT). Among the parameters to classify these fractures, we believe the most determining ones are fracture size, followed by presence of fracture displacement. Results: Fractures were divided into those whose posterior fragment was 25% smaller than the tibial joint surface and those that compromised more than 25% of this joint. The first group underwent syndesmotic opening and was subclassified into 1A (stable fractures), which do not require surgical treatment, and 1B (unstable), which require syndesmotic stabilization. The second group, which comprised the larger fractures, was subclassified into 2 A (non-displaced fractures, or with a displacement below 2 mm), which underwent percutaneous osteosynthesis, 2B (displaced fractures), and 2C (comminuted fractures), which underwent open reduction and internal fixation using a posterior approach. Conclusion: The classifications published so far are anatomic or descriptive, but none of them proposes a therapeutic algorithm for each type of fracture. We believe it will be helpful for its interpretation and decision-making on the need to perform a posterior approach, prioritizing the anatomical reduction of the joint fragment and resolution of syndesmotic instability linked to each fracture pattern using the most simple and effective method. Level of Evidence IV; Therapeutic Studies; Case Series.

scholarly journals MRI Study on Tibial Nerve of the Ankle Canal and Its Branches: A method of multiplanar reconstruction with 3D-FIESTA-C sequences

2020 ◽  
Author(s):  
Yan Zhang ◽  
Xucheng He ◽  
Juan Li ◽  
Ju Ye ◽  
Wenjuan Han ◽  
...  
Keyword(s):  
Tibial Nerve ◽  
Three Dimensional ◽  
The Body ◽  
Multiplanar Reconstruction ◽  
Medial Malleolus ◽  
Cross Sectional ◽  
Medial Plantar Nerve ◽  
Lateral Plantar Nerve ◽  
Good Imaging ◽  
Starting Point

Abstract Background The display of tibial nerve and its branches in the ankle canal is helpful for the diagnosis of local lesions and compression, and also for clinical observation and surgical planning.The aim of this study was to investigate the feasibility of three-dimensional dual-excitation balanced steady-state free precession sequence (3D-FIESTA-C) multiplanar reconstruction (MPR) display of tibial nerve and its branches of the ankle canal. Methods The subjects were 20 healthy volunteers (40 ankles), aged 22–50, with no history of ankle joint desease. 3D-FIESTA-C sequence was used in the 3.0t magnetic resonance equipment for imaging. During the scanning, each foot was at a 90-degree angle to the tibia.The tibial nerve of the ankle canal and its branches were displayed and measured at the same level through multiplanar reconstruction. Results Most of the tibial nerve bifurcation points were located in the ankle canal (57.5%), few (42.5%) were located at the proximal end of the ankle canal, and none was found away from the distal end. The bifurcation between the medial plantar nerve and the lateral plantar nerve is on the line between the tip of the medial malleolus and the calcaneus, and it’s angle is between 6° and 35°.The average cross-sectional diameter of the medial plantar nerve is about mm, and the lateral plantar nerve about mm. In MPR images, the display rates of both the medial calcaneal nerve and the subcalcaneal nerve were 100%, and the starting point of the subcalcaneal nerve was always at the distal end of the starting point of the medial calcaneal nerve. In 55% of cases, there were more than 2 medial calcaneal nerve innervations. Conclusion The 3D-FIESTA-C MPR can display the morphological features and positions of tibial nerve and its branches and the bifurcation point’s projection position on the body surface can be marked. This method not only benefited the imaging diagnosis of tibial nerve and branch-related lesions of the ankle canal, but also provided a good imaging basis to plan the clinical operation of the ankle canal and avoid surgical injury.

scholarly journals Functional outcome of bimalleolar ankle fractures treated with fibular plate for lateral malleolus and C.C. screws for medial malleolus

2020 ◽  
Vol 6 (1) ◽  
pp. 1126-1132
Author(s):  
Dr. Sachin Kale ◽  
Dr. Pratik Tank ◽  
Dr. Rahul Ghodke ◽  
Dr. Pankaj Singh ◽  
Dr. Abhiraj Patel
Keyword(s):  
Functional Outcome ◽  
Lateral Malleolus ◽  
Ankle Fractures ◽  
Medial Malleolus
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