Position Of Nutrient Foramina Research Articles

Topographical anatomy and clinical implications of the metatarsal diaphyseal nutrient foramina across South African populations.

Metatarsal fractures often occur around the diaphyseal nutrient foramina (NF) which vary in topography depending on population affinity. Topographical and morphometrical knowledge of the NF is crucial in understanding fracture development and fracture site healing patterns. The current study aimed to describe the topography and the morphometry of the metatarsal diaphyseal NF in South African Africans (SAA), South Africans of European descent (SAED) and South Africans of Mixed Ancestry (SAMA). The study examined 4284 dry cadaveric metatarsals from both sexes and sides of these populations for NF topography and morphometry, including the presence, number, location, position, size and direction of the NF on the metatarsal bones. The NF was present in 99.4% of the metatarsals. Most (84.5%) metatarsals examined had a single NF. Most (97.4%) NF were located in the middle third of the metatarsal bones. The median foramina index (FI) of the second metatarsal exhibited population affinity and significant differences were found both on the left second metatarsal (P = 0.043), and the right second metatarsal (P = 0.046). The position of NF was predominantly lateral on the first (92.4%), second (64.9%) and third (59.1%) metatarsals, whilst the position was predominantly medial on the fifth (65.1%) metatarsals. The NF positions on the fourth metatarsals showed the greatest population variability. The first metatarsals had primarily dominant-sized and distally directed NF whilst the second through fifth had primarily secondary-sized and proximally directed NF. The topographical anatomy of the metatarsal diaphyseal NF appears similar across the South African populations. Metatarsal bones are highly vascularized bones presenting with multiple nutrient foramina.

Morphological Study of Nutrient Foramina in Long Bones of Upper Limb among North Gujarat Population

Introduction: Main source of nutrition to long bone during growth and ossification is nutrient artery. Nutrient canal opens as nutrient foramen on the surface of shaft which conducts the nutrient artery and the peripheral nerves to bones. Nutrient artery provides more than 60-70% of blood supply to long bone, 30- 40% through periosteal, metaphyseal and epiphyseal blood vessels. Aim: To determine number of nutrient foramina, its position on surface of shaft, size and direction of nutrient foramina either towards proximal end or distal end and find out foraminal index from the position of nutrient foramina. Materials And Methods: A cross-sectional study was performed in 177 dry bones (60 humerus, 60 radius, 57 ulna) of upper limb, available at Anatomy Department, GMERS Medical College Himmatnagar, during September 2021. All bones were observed for number, position and direction of nutrient foramina. Size of foramen was measured by needles of different size. Mean Foraminal index was calculated for each long bone of upper limb by using Epi Info™ for windows, CDC, Atlanta, version 7.2. Results: Majority of bones had single nutrient foramina, all foramina were directed towards the elbow joint. All nutrient foramina were on flexor surfaces of bone, except one bone (radius). Majority of nutrient foramina were situated on middle 3rd of the shaft. Size of nutrient foramen was range from 22 to 28 gauge of needle. Conclusion: Information on nutrient foramina of long bones of upper limb will be useful in many orthopedic surgeries like microvascular bone grafting and many plastic reconstructive surgeries. During surgeries like fracture repair, bone graft or muscle graft care should be taken, not to damage these nutrient vessels to keep intact blood supply of bone.

Variations of Nutrient Foramen of Femur and its Clinical Implications

Introduction: Nutrient foramen is the largest opening on the shaft of the femur that conveys nutrient artery into the marrow cavity. Knowledge on locations of nutrient foramina is essential during surgical procedures as well as to rule out if the fracture line passes through the foramina. The purpose of the study was to determine the number and position of nutrient foramina in relation to length and topography of the femur. Methods: The study model was descriptive, cross-sectional study that included 151 femurs (71 right and 80 left side). The total number, location, and direction of nutrient foramina were investigated. Total length of femur and distance of foramen from the proximal end was measured with the 500mm 20" Digital Vernier Nib Jaw Caliper Metric/ Imperial Machine-DRO and finally Foraminal Index was calculated. Results: The analysis revealed 119(78.81%) of the femurs with single nutrient foramen, 31(20.52%) with double and 1(0.67%) with triple nutrient foramina. Foraminal Index II was found in 74(86.05%) on right side and 90(91.84%) on left side. The most common location of nutrient foramen was the medial lip of linea aspera (n= 77, 41.85%). All of the foramina were directed towards the proximal end. Conclusion: The present study has reported the majority of nutrient foramina located in the middle third of femur along the linea aspera. Thus, linea aspera should not be stripped off during surgical procedures to avoid damage to the nutrient arteries.

An Anatomical Study of the Tibia in the North Indian Population

Introduction The human tibia is a complex anatomical unit and the knowledge of its morphometric values is important in Forensic, Anatomic and Radiological cases in order to identify unknown bodies and stature. Objective It was to analyze the tibia, its morphometry, side difference and to investigate the position of nutrient foramina in tibia. Methods In this study, 60 adult human tibias (30 right and 30 left) were obtained from the Department of Anatomy SMSR SHARDA UNIVERSITY. In the study a total of two parameters i.e. Cross Section Index in the middle and Cnemicus Index of the bones were obtained and evaluated by using two instruments- a Measuring Tape and a Vernier Calipers. All the bones were dry and showed normal anatomical features. Results The mean Cross Section Index in the middle was calculated as 80.42 ± 11.33 on the right side and 78.15± 12.78 on the left side; and the Cnemicus index was 78.40 ± 13.19 on the right side and 70.84 ± 11.38 on the left side Conclusion The two parameters in the North Indian population were compared with other populations. The values were found to be almost comparable however there were subtle differences between different populations. The position of nutrient foramen was also assessed. This knowledge will thus help further researchers and orthopedic surgeons in various procedures like joint replacement therapy, fracture repair, bone grafts and vascularized bone microsurgery as well as in medico‐legal cases.

Morphometric Evaluation of Dry Humerus Bone in a Medical College of Eastern Nepal

Introduction: Anthropometric measurement of dry bones are helpful to estimate the stature. It is useful for differentiating unidentified bodies, skeletal remains, surgical procedures and are helpful for anthropologists, anatomists, forensic and surgery.
 Objective: The objective of this study was to find the morphometric measurements of dry Humerus bone available at Birat Medical College and Teaching Hospital of Eastern Nepal.
 Methodology: A cross- sectional study was conducted from 28th June- 28th July 2019 in the department of Anatomy of Birat Medical College and Teaching Hospital by taking 59 dry humerus bone. Various parameters such as maximum length, circumference of surgical neck, epicondylar breadth together with position and number of nutrient foramina were measured. Data was collected using osteometric board, vernier caliper and tape. The number, direction and location of nutrient foramina were observed macroscopically by using a fine wire. Ethical clearance was taken from Institutional Review Committee of Birat Medical College and Teaching Hospital.
 Results: Among 59 dry humerus bone, majority (32) were left humerus. No statistical significant difference was found in morphometric measurements between right and left side of dry Humerus bone. The single nutrient foramen was present in 85.18% and 81.25% of right and left humeri respectively. Double nutrient foramina in 14.81% of right humeri and 15.62% of left humeri. Triple nutrient foramina was only seen in left humeri (3.12%).
 Conclusion: Single nutrient foramen is most common in both sides of humeri. No statistical significant difference was found between right and left humeri in the different parameters such as maximum humeral length (MHL), vertical diameter of superior articular surface (VDSAS), circumference of surgical neck (CSN), circumferences of middle shaft (CMS), epicondylar breath (EB), medial epicondyle to capitulum (ME - C), transverse diameter inferior articular surface (TDIAS), maximum transverse diameter of trochlea (MTDT), anteroposterior diameter of the trochlea (APDT) and position of nutrient foramina (PNF).

Study of Variation in the Position of Nutrient Foramina (Nutrient Artery) in Tibia of Rajasthan Population

Study of Variation in the Position of Nutrient Foramina (Nutrient Artery) in Tibia of Rajasthan Population