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Fulltext V-Shaped Bending Support helps in 3-Point Bending Test experiment for small mice bone

Noor Shafini Mohamad, Mohd Hafizi Mahmud

Jurnal Inovasi Malaysia, 2020;4(1):1-14.
MyJurnal

Three-point bending test is one of the main methods used in long bones to characterise bone material and determine the biomechanical properties. We have examined the mechanical competencies of the mouse bones at four-week-old by using a three-point bending jig so that the potential genotype-related deficiencies in mechanical properties of bones explored. The available bending jig was not suitable for small animal model and may cause slippage when applying the load. The tibial gross length measurements of the four-week-old mouse measured using the proximal anatomical point of the centre of the condyles to the distal anatomical significance of the medial malleolus (~16 mm). The mid tibia diameter measurement is taken at the middle tibia (~1 mm) and metaphyseal diameter (~3 mm). The bending jig was custom-made, where both ends support were cut in a v-shape to provide stability. The tibias were mechanically tested with the v-shape support under three-point bending using a Bose ElectroForce® 3200 until failure. The test revealed a significant result of flexural strength, work-to-fracture and strain to failure obtained from the load-displacement curves. The finding may be useful in the studies of quantitative assessments of the strength and toughness of small animal bones.

Matched MeSH terms: Tarsal Bones
Fulltext How the three arches of the foot intercorrelate

Gwani AS, Asari MA, Mohd Ismail ZI

Folia Morphol (Warsz), 2017;76(4):682-688.
PMID: 28553850 DOI: 10.5603/FM.a2017.0049

BACKGROUND: The foot is composed of medial, lateral and transverse arches which, particularly the medial arch, provide it with the ability to function both as a flexible and rigid structure for proper locomotion. Arches of the foot, as well as their effect on lower extremity function, have been studied. However, quantitative data on the relationship between these arches still remain scanty. The purpose of this study was, therefore, to examine how the three arches of the foot intercorrelate.
MATERIALS AND METHODS: Seventy-six participants (58 males, 18 females) were recruited to participate in the study. Bilateral weight-bearing lateral radiographs of the right foot were taken from each participant. Navicular heights (NH), medial cuneiform height (MCH), calcaneal inclination angle (CIA) and calcaneal-first metatarsal angle (C1MA) were measured to represent the medial arch. The lateral arch was represented by cuboid height (CH) and calcaneal-fifth metatarsal angle (C5MA) whereas; MCH and CH represented the transverse arch. Mean difference of variables between males and females was compared using independent t-test while the correlation between the variables was determined using Pearson correlation.
RESULTS: All the variables were not significantly related to gender. Significant moderate to excellent linear correlations were observed between the variables. CIA showed the strongest correlation with C1MA (r = -0.90) and C5MA (r = -0.84) whereas, CH had the least correlation with other variables.
CONCLUSIONS: The moderate to excellent correlations between the variables indicate that deformation or elevation of the medial arch may consequently result in similar movements of the lateral and transverse arches and vice versa.

Matched MeSH terms: Metatarsal Bones; Tarsal Bones
A Survey on Work-related Musculoskeletal Disorders (WMSDs) among construction workers

Isa Halim, Rohana Abdullah, Ahmad Rasdan Ismail

Journal of Occupational Safety and Health, 2012;9(1):15-19.
MyJurnal

Work-related Musculoskeletal Disorders (WMSDs) are common occupational injuries among workers in the construction industry. Epidemiological studies indicated that WMSDs include neck pain, lower back pain, knee pain, leg fatigue as well as ankle and feet discomfort. The objectives of this study are to identify the WMSDs experienced by the workers during construction works and discuss the causes of those WMSDs. Subjective approach associated with modified Nordic Musculoskeletal Questionnaire (NMQ) was applied to identify the symptoms of WMSDs. A case study was conducted in several construction sites situated at the southern region of Peninsular Malaysia. During the study, 37 construction workers with different age and scope of works were interviewed to determine the WMSDs that they have experienced. Based on distributed questionnaire, almost all workers experienced pain in the region of lower back, upper back and biceps. These pains were contributed by manipulation of heavy load and high force exertion. Based on discussed causations, control measures via engineering controls method and administrative controls method were proposed to alleviate the risk of WMSDs among construction workers.

Matched MeSH terms: Tarsal Bones
Fulltext Surgical management of a mangled foot by a free vascularized fibular graft: a case report

Kow, Ren Yi, Aziah Abdul Aziz, Muhammad Firdaus Abas, Low, Chooi Leng, Akmal Azim Ahmad Alwi

International e-Journal of Science, Medicine & Education, 2018;12(2):30-33.
MyJurnal

The human foot serves as an important part to support
the body weight and accounts for the majority of our
movements. A mangled limb involves injury to at least
three out of four systems, namely the soft tissues, nerves,
blood supply and bone. While amputation is indicated in
some cases of mangled limb, with proper planning, limb
salvaging surgical management is also a viable option.
Special consideration to the skeletal stabilization, control
of infection, vascular status and soft tissue coverage is
paramount to the success of limb salvaging surgery. We
present a case of mangled limb which was successfully
treated with limb salvaging surgical management. Initial
debridement, Kirschner wires insertion and cross ankle
external fixation were used for skeletal stabilization. An
antibiotic spacer was inserted for local antibiotic and to
maintain the length left due to the loss of medial and
intermediate cuneiform bones. The anterior tibialis
artery and its venae comitantes were utilized for free
vascularized fibular graft to provide bony reconstruction
as well as soft tissue coverage for the mangled foot.

Matched MeSH terms: Tarsal Bones
Fulltext Incidence and predictors of early ankle contracture in adults with acquired brain injury

Norhamizan Hamzah, Muhammad Aizuddin Bahari, Saini Jeffery Freddy Abdullah, Mazlina Mazlan

Neurology Asia, 2015;20(1):49-58.
MyJurnal

Objective: To determine the incidence and predictors of early ankle contracture in adults with acquired brain injury. Methods: A prospective cohort study of patients admitted to Neurosurgical Intensive Care Unit (NICU), University Malaya Medical Centre and referred for rehabilitation within a period of 12 months. Adult patients with newly diagnosed acquired brain injury with no prior deformity to lower limbs, Glasgow Coma Scale ≤ 12, no concomitant spinal or lower limb injuries, medical stability at inclusion into the study and agreed to participate for the total duration of assessment (3 months) were recruited. We conducted weekly review of ankle muscle tone and measurement of ankle maximum passive dorsiflexion motion. The end point is reached if ankle contracture developed or completed 3 months post injury assessment. Results: The cohort included 70 patients, of which only 46 patients completed the study. Twenty-eight patients suffered from severe brain injury whilst 18 from moderate brain injury. Out of the 46 patients, 13 (28%) developed ankle contracture at the end of the study period. Abnormal motor pattern was significantly associated with incidence of ankle contracture, which included spasticity (p

Matched MeSH terms: Tarsal Bones