Anthropometric and clinical analysis of the distal ulna and extensor carpi ulnaris tendon using MRI

Toprak, Uğur; Türkoğlu, Sefa

doi:10.1007/s00276-018-2028-y

Cited by 3 publications

(6 citation statements)

References 13 publications

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“…Grade 2 was assigned if the line passed between 51% and 99% of the groove. Forearm rotation also was determined according to this drawn line (20,22,26). (Figure 3-4).…”

Section: Resultsmentioning

confidence: 99%

Is it really safe to evaluate symptomatic extensor carpi ulnaris tendon instability by magnetic resonance imaging (MRI)?

Öztürk¹,

Eren²

2021

Acta Orthop Belg

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The extensor carpi ulnaris (ECU) tendon is in the sixth extensor compartment of the wrist and is isolated from other tendons by a different sheath. Extensor carpi ulnaris pathologies are characterized by pain locally localized to the wrist ulnar side. Outpatient records and wrist MRI (magnetic resonance imaging) tests were retrospectively scanned between January 2018 and July 2019. By examining the anamnesis and examination notes of the patients in the outpatient clinic records, patients with wrist ulnar side pain, pain or sensitivity on the ulnar styloid and provocation test (synergy) were assigned to the first study group (Group 1).The second study group was composed of patients who underwent wrist MR for the diagnosis or differential diagnosis of a synovial cyst around the wrist, without ulnar side pain (Group 2).While evaluating MR images in the axial plane, the depth and width of the ulnar groove, thickness of the ECU tendon were measured. The position of the ECU tendon relative to the ulnar groove and the forearm rotation during the shooting were recorded.105 cases evaluated, there were 41 cases in the symptomatic subgroup and 64 cases in the asymptomatic subgroup. Among all patients, the mean patient age was 38.05.In the evaluation according to whether cases were symptomatic or not, there was no significant relationship between being symptomatic and the degree of instability and MR withdrawal position. Our study suggests that ECU instability in MR is not a specific condition, and detection of MR in instability may not be associated with a patient’s symptoms.

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“…Grade 2 was assigned if the line passed between 51% and 99% of the groove. Forearm rotation also was determined according to this drawn line (20,22,26). (Figure 3-4).…”

Section: Resultsmentioning

confidence: 99%

Is it really safe to evaluate symptomatic extensor carpi ulnaris tendon instability by magnetic resonance imaging (MRI)?

Öztürk¹,

Eren²

2021

Acta Orthop Belg

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“…Lastly, Toprak et al suggested that it may be more beneficial to focus on the damage of the subsheath rather than deepening the groove, as a result of their findings that showed the groove is wider than the ECU tendon in anatomically normal individuals. 6 Our study was limited by the fact that our subjects were fresh frozen cadavers rather than living human subjects, as well as the small sample size of 12 cadavers. Our power calculation indicated that a sample size of 22 would achieve sufficient statistical power.…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

“…A recent study by Toprak et al was able to distinguish ulnar groove width between male and female individuals, and also determined that the ulnar groove is wider than the ECU tendon, attributing this to the cause of subluxation. 6 Cadaveric studies by Puri et al and Ghatan et al found that groove deepening did not improve stability of the ECU tendon, and that there was no correlation between groove depth and ECU subluxation, respectively. 7,8 There currently exists at least 2 articles that suggest deepening the grove to augment subsheath repair.…”

Section: Introductionmentioning

confidence: 97%

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An Analysis of Extensor Carpi Ulnaris Groove Morphology and Tendon Instability

Shoap

Dennis

Lombardi

et al. 2022

Hand (New York, N,Y.)

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Background: The extensor carpi ulnaris (ECU) tendon has a distinct subsheath at the distal ulna. Symptomatic tears of this subsheath and subluxation of the ECU tendon often require reconstruction. We sought to determine the anatomical constraints of the ECU subsheath. Methods: The ECU subsheath was exposed on 12 fresh-frozen upper extremities. The tip of the ulnar styloid, the distal ulnar joint surface, and the proximal extent of the distal radio-ulnar joint were identified and dimensions measured. Subluxation of the tendon was then assessed with and without an intact subsheath in 9 specimens. The travel of the tendon was measured in pronation through supination and flexion before and after sectioning of the subsheath. Results: The ECU subsheath is 8.9 mm (standard deviation [SD] = 0.8 mm) wide proximally and 9.0 mm (SD = 1.2 mm) distally. The distal ulnar insertion is 0.5 mm (SD = 0.8 mm) proximal to the tip of the styloid, and stretches 10.2 mm (SD = 2.7 mm) proximally. From maximum pronation to maximum supination and flexion, the ECU tendon traveled 3.32 mm (SD = 4.24) medially when the subsheath was intact and 5.42 mm (SD = 5.0 mm) after sectioning. The maximum depth of the ulnar groove was 2.5 mm (1.59-3.56 mm). There was no significant association between changes in ECU subluxation and the depth of the ECU groove (Spearman’s rho = 0.25). Conclusion: The ECU subsheath is roughly 1 cm square stretching proximally from the ulnar styloid. ECU groove depth is not a significant independent predictor of tendon subluxation.

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“…2) Two distal ulnar dimensions: the ulnar distal end width (UDEW) defined as the largest ulnar width at its distal end (Monum et al, 2021). The ulnar styloid process length (USPL) is the vertical distance between the styloid tip and the ulnar styloid process base (Toprak and Turkoglu, 2018)  Reliability assessment: The reliability of the measurements of the RDEW, RH, UDEW, and USPL was assessed by comparing the mean values of the two researchers' readings at different times and in different situations using the paired (t) test, Pearson correlation coefficient, and scatter plot chart to outline the correlation between the two researchers' readings concerning the numerical values of the studied dimensions. The dimensions that were found to be reliable were then validated.…”

mentioning

confidence: 99%

Assessment of the reliability and validity of some anthropometric dimensions at the distal epiphyseal ends of radius and ulna for gender identification using Magnetic Resonance Imaging among a sample of the Egyptian population - A retrospective study

Saad,

Abdel Rahman,

Ali

et al. 2024

Ain Shams Journal of Forensic Medicine and Clinical Toxicology

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Introduction: Personal identification relies on sex identification. Anthropometric measurements are known to be reliable for sex identification in forensic cases. MRI has recently emerged as the preferred method for determining anthropometric measurements. The proximal ends and shafts of the radius and ulna are both sexually dimorphic. However, research on the utility of their distal ends for sex determination is limited. Aim: To assess the reliability and validity of some anthropometric dimensions at the distal epiphyseal ends of radius and ulna for sex identification using Magnetic Resonance Imaging among a sample of the Egyptian population to adopt this method for sex identification in forensic practices. Methodology: This cross-sectional retrospective study was conducted on 200 subjects (100 males and 100 females) using archived MRI films. Four dimensions were measured: the radial distal end width, radial height, ulnar distal end width, and ulnar styloid process length. The data was statistically analysed. Results: The tested dimensions were found to be reliable and valid in sex discrimination with accuracy up to 87.5% for radial dimensions and up to 83.5% for ulnar dimensions. Conclusion:The study demonstrated the high accuracy of the distal epiphyseal ends of the radius and ulna in identifying sex.

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Anthropometric and clinical analysis of the distal ulna and extensor carpi ulnaris tendon using MRI

Cited by 3 publications

References 13 publications

Is it really safe to evaluate symptomatic extensor carpi ulnaris tendon instability by magnetic resonance imaging (MRI)?

Is it really safe to evaluate symptomatic extensor carpi ulnaris tendon instability by magnetic resonance imaging (MRI)?

An Analysis of Extensor Carpi Ulnaris Groove Morphology and Tendon Instability

Assessment of the reliability and validity of some anthropometric dimensions at the distal epiphyseal ends of radius and ulna for gender identification using Magnetic Resonance Imaging among a sample of the Egyptian population - A retrospective study

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