Accuracy of Measuring Methods on the Femoral Head

Athapattu, Meuru; Saveh, Amir Hossein; Mahmud, Jamaluddin; Alrashidi, M.; Wang, Bin; Chizari, Mahmoud

doi:10.1016/j.proeng.2013.12.151

Cited by 3 publications

(4 citation statements)

References 7 publications

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“…Athapatu et al performed a series of experimental measurements to investigate which method or mode of measurement is more reliable with measuring the diameter of the femur head. 8 In 10 samples, they measured the diameter of femur head using four methods; Vernier calliper, ring gauges, X-ray and CT scan and found no major difference between the results. It was observed that the results of the Vernier calliper and ring gauges show less variation in readings in comparison with X-ray and CT scan methods.…”

Section: Discussionmentioning

confidence: 99%

“…The diameter of the femoral head was measured intraoperatively using standard fully circular templates, with the surgeons passing the femoral head through the circular template, progressing from smaller rings to larger ones which get easily fit into ring. 8 For radiological measurements, X-ray of pelvis with hips anteroposterior view were included. In order to validate this, the measurements are taken from greyscale images of the patient's hip with those obtained from the above mentioned mechanical measurements; Xray and computed tomography (CT) scan were performed on the 10 femur head samples.…”

Section: Measurement Methodsmentioning

confidence: 99%

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Femoral head diameters in Nepalese patients undergoing hemiarthroplasty

Gupta

Chaurasia

Jha³

2021

Int J Res Orthop

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Background: Sizing of the femoral head is important for determining the appropriate size of implants to be used for a patient undergoing hip arthroplasty. The present study aimed to determine the mean diameter of femoral head in Nepalese population who underwent hemiarthroplasty in our department.Methods: We retrospectively reviewed the medical records of patients who underwent hemiarthroplasty from December 2016 till December 2020. We included patients aged more than 50 years who underwent hemiarthroplasty. The diameter of the femoral head was measured intraoperatively using standard fully circular templates. For radiological measurements, X-ray of pelvis with hips anteroposterior view were included.Results: A total of 600 femoral heads were evaluated, 400 of women and 200 of men. Of these cases, the femoral head diameter were evaluated based on x-ray pelvis in 500 cases and rest of the 100 cases were evaluated intraoperatively. The mean age of the patients in our sample was 75.2±9.4 (range 50–90) years. Overall, the mean femoral head diameter (with intact articular cartilage) was 44.9±3.2 (range 39–53 mm) mm. Among the male patients, mean femoral head diameter was 47.7±2.8 mm, which was found to be significantly higher than that of female patients, who had a mean femoral head diameter of 43.7±2.4 mm, p value <0.05.Conclusions: Further studies are needed in other geographical locations, so that reference values could be established for specific regions.

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Section: Discussionmentioning

confidence: 99%

Section: Measurement Methodsmentioning

confidence: 99%

Femoral head diameters in Nepalese patients undergoing hemiarthroplasty

Gupta

Chaurasia

Jha³

2021

Int J Res Orthop

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“…As an example, a 1 mm escalation in a previously drilled 10 13 mm tunnel is acted for a 10% increase in diameter while it is indicating 17.4% enlargement on the tunnel cross-section. It is therefore extra care expected in interpreting reports for tunnel expansion when simple radiograph evaluations have been used [23].…”

Section: Discussionmentioning

confidence: 99%

Biomechanical Modeling of a Bone Tunnel Enlargement Post ACL Reconstruction

Borjali

Mohseni

Chizari

2020

Preprint

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BackgroundBone tunnel enlargement is considered as a potential problem following ACL reconstruction and can cause a fixation failure and complicate its revision surgery. This study evaluates post tibial tunnel expansion in ACL reconstruction using an interference screw.MethodsA series of in-vitro experimental tests on animal bone and tissues were used to simulate post ACL reconstruction. The study believes an unbalanced lateral force can cause a local enlargement on the contact zone inside the tunnel. Grayscale X-ray images were used to assess the screw alignment inside the tunnel.ResultsThey showed a slight misalignment between the screw and the tunnel axis as the tendon strands moved along the side of the tunnel, and the screw had partial contact with the tendon and bone along the tunnel. According to the results, increased stress in the tunnel wall causes tunnel enlargement. Although the tunnel created away from the tibial central axis produced a higher strength, it results in higher stress on the wall of the tunnel which can increase the risk of tunnel expansion.ConclusionsThe current study believes the use of an unguided interference screw insertion potentially increases risks of the misaligned fixation and cause a tunnel enlargement. This risk may be controlled by restricting the post-operative rehabilitation.

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“…a) Diameter of Femoral Head: Femoral head gauge was used for this purpose. (8) It was measured after extracting out the head, intact. Deformed femoral heads are not measured as those are excluded from our study.…”

Section: Operative Proceduresmentioning

confidence: 99%

A Comparative Study Between Intraoperative Clinical and Postoperative Radiological Measurement of Distance Between Tip of Greater Trochanter to Center of Femoral Head in Operated Cases of Hip Hemiarthroplasty

Deb¹,

Mallick²

2018

jemds

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BACKGROUND Hip joint is a polyaxial ball and socket joint. At different stages of gait cycle, joint reaction forces at the hip joint depend on abductor leaver arm which is function of neck length (Offset), neck shaft angle and body weight. During Arthroplasty operation of hip, femoral offset measurement and its restoration to anatomical limit is important. In our study, we have measured the femoral neck length, between two fixed bony points, from the tip of greater trochanter (GT) to the center of the femoral head peroperatively and again post-operatively, from the true size x-ray of the replaced femoral head. We compared this measurement with the postoperative x-ray of normal side hip, to compare, how far normal offset is achieved after operating with various prosthesis (fixed bipolar prosthesis and modular prosthesis) available in the Indian scenario. MATERIALS AND METHODS This is a prospective, comparative study on presentation at in-patient department (IPD). Total 53 patient (22 male and 31 female) above 60 years of age, admitted at our institution 'Ramakrishna Mission Seva Prathistan (VIMS)' in the year 2015-16, with intracapsular fracture neck femur of either right or left side were studied. Per-operative measurement was taken during hemiarthroplasty operation using fixed bipolar prosthesis or modular prosthesis (cemented/un-cemented) available in the Indian market. Post-operative measurement taken in the true size x-ray of two fixed points on the operated and normal side. Limb length was measured clinically. The values obtained were compared to establish how far the normal anatomical offset is achieved after hemiarthroplasty operation by using prosthesis manufactured by different companies in India. RESULTS Intraoperative measurement of distance between tip of GT and center of femoral head corresponded with the measurement taken from tip of GT to the prosthetic femoral head. This signifies that we have successfully corrected the offset with available prosthesis with correct surgical technique. There is no significant difference in the postoperative true size x-ray of distance between tip of GT to the center of prosthetic femoral head and the tip of GT with center of femoral head of normal side. CONCLUSION Our study results shows that by opting correct surgical technique and appropriate neck resection, currently available prosthesis (FBP & MBP) in our country can achieve desired neck offset length in comparison to the normal hip and had no significant limb length discrepancy.

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Accuracy of Measuring Methods on the Femoral Head

Cited by 3 publications

References 7 publications

Femoral head diameters in Nepalese patients undergoing hemiarthroplasty

Femoral head diameters in Nepalese patients undergoing hemiarthroplasty

Biomechanical Modeling of a Bone Tunnel Enlargement Post ACL Reconstruction

A Comparative Study Between Intraoperative Clinical and Postoperative Radiological Measurement of Distance Between Tip of Greater Trochanter to Center of Femoral Head in Operated Cases of Hip Hemiarthroplasty

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