-Articulación de la cara palmar de la mano. -Articulación Metacarpofalángica de los dedos medio y anular. -Articulación Interfalángica del. English Translation, Synonyms, Definitions and Usage Examples of Spanish Word ‘huesos sesamoideos de la mano’. Prevalence and Distribution of Sesamoid Bones of the Hand. A Radiographic Study in Turkish Subjects. Prevalencia y Distribución de los Huesos Sesamoideos.
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Prevalence and Distribution of Sesamoid Bones of the Hand. A Radiographic Study in Turkish Subjects. The purpose of this study was to examine the plain anteroposterior radiographs of the hands in Turkish subjects in order to determine the prevalence of sesamoid bones and their distribution. A total of hand radiographs from men and women with a mean age of One sesamoid bone in the thumb interphalangeal IP joint was observed in The prevalence of sesamoid bone of the index and little MCP joint were Sesamoid bones palmar to the MCP joints of the middle finger and ring finger were rare; the incidence for these locations being 1.
There were no significant differences between left and right hand digits. The present study represents the first report on the prevalence and distribution of sesamoid bones in the hand in Turkish subjects. The prevalence of sesamoid bones in Turkish population is considerably different from the Africans and Europeans, but rather resembles Mediterranean and Arab populations.
Sesamoid bone; Hand; Prevalence; Turkish population.
Fractura en Hueso Sesamoideo | Valley Regional Medical Center
Sesamoid bones are small round or oval shaped nodules that are imbedded within certain tendons. They are called sesamoid bones, because they are similar in size and shape to the flat oval seed of Sesamum Indicum, an ancient East Indian plant used for purging by the Greeks Amar et al. Sesamoid bones are sesamoidoes found in locations where a tendon passes over a joint, such hudsos the hand, wrist, knee, and foot.
Sesamoid bones have some functions. They act to protect the tendon and to increase its mechanical effect by holding the tendon further away from the center of the joint thus increasing its lever arm.
Furthermore, they modify the pressure, diminish the friction and, occasionally alter the direction of muscle pull Amar et al. Excluding some exceptional circumstances such as congenital agenesis, certain sesamoid bones are invariably present in all individuals like patella. However, some sesamoid bones are subject to variations such as sesamoid bones of the hand. Therefore, these variable sesamoid bones are generally considered normal anatomic variations, and are often recognized as an incidental radiograph finding in clinical practice Amar et al.
However, they may participate in various disease processes Wood. Traumatic conditions include acute fracture, stress fracture, and pseudoarthrosis Fig. Neoplastic and arthritic conditions are also encountered, as well as inflammatory and degenerative disorders Havulinna et al. In the hand the sesamoid bones are found on the palmar surface of the several joints.
Two, of which the medial is the the larger, are constant at the metacarpophalangeal joint of the thumb; one at the interphalangeal joint of the thumb; one is frequently present in the corresponding joint of the little finger, and one or two at the same joint of the index finger.
Sesamoid bones are also found occasionally at the metacarpophalangeal joints of the middle and ring fingers and at the distal interphalangeal joint of the index finger. However, the prevalence of sesamoid bones and their distribution in digits of the hand in Turkish population has not been reported yet.
Furthermore, we analyzed the differences between gender and laterality. We excluded 94 hand radiographs, in which the sesamoid bones were not clearly depicted due to either incorrect patient positioning making it impossible to judge about the presence of sesamoid bones or all metacarpal and phalangeal bones of the hand were not demonstrated.
Finally, antero-posterior and oblique hand radiographs of male and female patients with a mean age of There were right and left hand radiographs. All radiographs were of a single hand from each patient, either right or left. The presence of sesamoid bones in various digits and their distribution was recorded by two orthopedic surgeons independently at separate times and any discrepancy was subsequently resolved by consensus.
Data on patient age, gender, and hand laterality right vs.
Continuous variables were stated as mean and standard deviation and categorical variables as percentage and frequency distribution. The differences between the sesamoid bones at a particular location and the side and sex were analyzed using Pearson Chi-Square Test. One sesamoid bone was seen palmar to the interphalangeal IP joint of the thumb in hands giving an incidence of huesps One sesamoid bone was found palmar to the MCP joint of the index finger in hands showing an incidence of In the little finger one sesamoid bone was seen palmar to the MCP joint in hands showing an incidence of The overall distribution of sesamoid bones and their percentage incidence is shown in Figure 2.
There was no statistically significant difference between the laterality and the frequency of sesamoid bones in all locations Table II. The most common arrangement of sesamoid bones was absence of all sesamoids bones in all locations except 1st MCP joint Fig.
Lesiones En Un Hueso Sesamoideo Del Pie
The common arrangement of sesamoid bones is summarized in Table III. In one patient, the sesamoid bone of the 2nd MCP joint and in another patient the sesamoid bone of the 5th MCP joint was double in configuration Swsamoideos. The distribution of sesamoid bones and their prevalence in the hand. The most common arrangement of sesamoid bones in Turkish subjects. Superimposition of the radial sesamoid bone with the first metacarpal head. Black arrow shows the ulnar sesamoid which is clearly evident, white arrows show the shadow of the radial sesamoid.
Several radiographic studies have documented the prevalence and distribution of sesamoid bones of the hand in different ethnic groups Table IV. The overall prevalence of sesamoid sesamlideos palmar to the MCP joint of the thumb ranged between In our study and all other studies, authors stated that two sesamoid bones ulnar and radial are constant in all cases; expect Bizarro and Amar et al.
Bizarro found two cases who lack these almost invariably present sesamoids, and in one case it appeared as a single bone on the ulnar side.
On the other hand, Amar et al. This percentage is sseamoideos high compared to the previously published studies. In standard hand radiographs antero-posterior and oblique viewsthe radial sesamoid bone is seen as a shadow just behind the head of first metacarpal due to superimposition Fig. This may be an explanation for this different percentage. In Bizarro’s hand x-ray series total hand radiographs 54 subjects were between years of age.
Although, the two sesamoid bones in the thumb MCP joint ossifies early at around 10 years of age, ossification thus visibility on x-ray may be completed at around 15 years of age Bizarro. This may be the reason why Bizarro found two subjects who lack these sesamoids before these sesamoids ossified. Furthermore, Goldberg et al. It can be concluded that two sesamoid bones radial and ulnar palmar to the MCP joint of the thumb is found in sesamiodeos individuals regardless of ethnic origin, despite extremely rare exceptions.
The prevalence of sesamoid bone in the thumb IP joint shows great variation among different studies. Apart from these two studies, the prevalence of thumb IP joint sesamoid ranged between In our study, we have found the prevalence to be Our results are very close to those reported from Arab and Mediterranean populations Similarly, the sesamoid bone of the index and little MCP joint similarly show great variation among different ethnic groups.
Interestingly, Msamati et al. Again, the prevalence of sesamoid bones in the index and little fingers in Turkish subjects seems to be similar to that in Arab and Mediterranean populations.
The sesamoid bones of the middle and ring finger are quite rare when compared to other fingers. Bizzaro reported the highest frequency in these localizations 5.
Among previous studies, only Joseph examined the arrangement of sesamoid bones in each individual hand Joseph. Thus, he classified the hands according to the presence or absence of sesamoid bones in 2nd sewamoideos 5th digits.
According to his study, there was three common type of arrangement of sesamoid bones; absence of all sesamoid bones 2nd through 5th digits In our study we have identified 9 different arrangements of sesamoid bones as shown huesoe Table III.
Absence of all sesamoids of the sesamoieos, excluding 1st MCP joint, was the most common type of arrangement with a prevalence of Although, Fawcett discussed about the sexual differences, there are only three previous studies which statistically examined the correlation between the gender and laterality with presence or absence of sesamoid bones in the hands Amar et al. All these studies could not show any difference between gender and laterality.
Similarly, in our study, we could find any sesaoideos between the laterality and sesamoid bones of the hand in any localization. In contrast to previous findings, we have found sexual differences huesps 2nd and 3rd MCP joint sesamoid bones. Present study has some strengths and limitations. This is largest series of hand radiographs examined in the current literature in adults. All the radiographs were digital, thus observers could subjectively adjust the display parameters such as contrast, opacity and brightness on the computer screen.
Huesos Sesamoideos en la Mano Humana
This provided a correct identification of all sesamoid bones. Furthermore, two independent observers reviewed all cases to decrease the errors. On the other hand, we could not examine the symmetry patterns, as radiographs were of a single hand from each patient, either right or left.
As a sesamoifeos, the present study represents the first report on the prevalence and distribution of sesamoid bones in the hand in Turkish subjects. Current literature lacks knowledge about the prevalence and distribution of sesamoids of the hand in Asian races that are the significant part of the world population. Furthermore, a symmetry pattern of sesamoid bones of the hand is unknown.
Further studies focusing on these lacking issues will be beneficial to improve the knowledge about the sesamoid bones of the hand. Sesamoid and accessory bones of the hand–an epidemiologic survey in a Mediterranean population. On Sesamoid and Supernumerary Bones of the Limbs.
Incidence and ossification of sesamoid zesamoideos in the hands and feet: The Sesamoid Bones of the Hand: Anatomy and pathology of the sesamoid bones. The hand compared to the foot. Aneurysmal bone cyst of the index sesamoid. The sesamoid bones of the hand and the time of fusion of the epiphysis of the thumb. Radiographic appearance of sesamoid bones in the hands and feet of Malawian subjects. Chronic sesamoiditis of the thumb: