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Showing 2 results for Metacarpal Bones
Tumoral Calcinosis: case report
Farhad Tafaghodi , Ali Zamani , Seyede Sabereh Mousavi ,
Volume 72, Issue 12 (3-2015)
Abstract
Background: Tumoral calcinosis is a hereditary disorder of metabolic dysfunction of phosphate regulation. It is an idiopathic calcinosis that characterized by the deposition of calcium phosphate in periarticular tissues that causes typically lobulated, well demarcated calcification around large joints particularly the extensor surfaces. It is usually painless. It is common in puberty age and adolescents. The involvement of the hand phalanges is very rare that can make a mistake in diagnosis if it is infected. Tumoral calcinosis is seen the same in both sexes. The electrolyte levels of calcium and phosphorus is normal and sometimes is hyperphosphatemia. It is the first report of tumoral calcinosis in Iran. Case report: A 7-year-old girl presented with redness, yellowish discharge and painful swelling of the left hip and the third web space of left hand admitted to Vali-e-Asr Hospital, Tehran, Iran, in 2013. The onset of the disease was 3.5 years ago. She did not mention the family history of the disease. The pain was at the left hip first. Six months later the third and fourth phalanges of the left hand was swollen. Physical examination revealed an erythematous mass in the extensor surfaces of the third and fourth metacarpals of the left hand. It was tender in palpation. The smear and culture of discharge was staphylococcus aureus. X-rays revealed calcification of the third and fourth metacarpals of the left hand. The entire lesion was managed by surgical excision. Successful postoperative medical management in the form of low calcium and low phosphorus diet and oral cloxacillin was performed. Conclusion: Tumoral calcinosis involves rarely the interphalangeal joints of hand. Because of its compression over adjacent nerves, it is painful. Sometimes it has a sterile discharge and rarely superimposed infections may occur. Radiologists can play a major role in early diagnosis and probable complications.
Sex determination by the length ratio of metacarpals and phalanges: X-ray study on Iranian population
Maryam Ameri , Soheila Ghorbani, Ebrahim Ameri , Forouzan Fares ,
Volume 76, Issue 8 (11-2018)
Abstract
Background: In forensic anthropological identification, we usually use body remains. Accurate sex estimation from these remains is very important and needs the knowledge of specific population standards of that area. Sometimes, human remains are damaged by environmental circumstances. So, we must examine single bones for sex estimation. One of the relatively resistant bones to environmental conditions are hand bones. Specific hand phalanges and metacarpals have significantly different dimensions in two sexes depending to each population and can be a helpful tool to estimate the gender of individuals. The aim of this study was to investigate the possibility of estimating gender using phalanges and metacarpals dimensions in Iranian people.
Methods: This prospective study was conducted on the X-ray images of adult people hands between the months of March and September 2017. They referred to Shafayahyaian Hospital, the educational and referral center of orthopedic disease of Iran University of Medical Sciences, in Iran. 200 adult persons (100 male and 100 female) without any background of specific disease, entered in our study. In each case, the length of D: distal phalanx, M: middle phalanx, P: proximal phalanx, MC: metacarpal, Fl: finger length, and T: total (Distal phalanx+middle phalanx+proximal phalanx+soft tissue of the finger tip) were measured in millimeter and reported in ratio. All analyses were done using SPSS software, version 20 (SPSS Inc., Chicago, IL, USA).
Results: Student t-test showed that many ratios were significantly different between two genders. It is concluded that the length ratio of metacarpals and phalanges could be used for sex determination. The most valuable ratios were FL1/FL3 and MC4/MC5. Multivariate logistic regression test reported an equation by which the gender is predictable. Z= 5.856+ -3.904 X FL1/FL3+ -1.865 X MC4/MC5.
Conclusion: If “Z=0”, the gender is male and if “Z=1”, it is female without any doubt. In our knowledge, this study provides the first population sex estimation formulae from the hand bones in Iranian population. However, we need further studies in larger groups to use this equation for sex determination in forensic contexts.

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