Nathan J Cherian, Christopher T Eberlin, Michael P Kucharik, Paul F Abraham, Mark R Nazal, Michael C Dean, Scott D Martin
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Mean baseline measurements of flux were compared with readings immediately following capsular elevation and after completing labral augmentation. Blood flux changes were expressed as the percent change from the baseline measurements.</p><p><strong>Results: </strong>The present study included 41 patients (24 men [58.5%] and 17 women [41.5%]) with a mean age (and standard deviation) of 31.3 ± 8.4 years, a mean BMI of 24.6 ± 3.4 kg/m<sup>2</sup>, a mean lateral center-edge of angle 35.3° ± 4.9°, a mean Tönnis angle of 5.8° ± 5.8°, and a mean arterial pressure of 93.7 ± 10.9 mm Hg. Following capsular elevation, the mean percent change in capsular blood flow flux was significantly different from baseline (-9.24% [95% confidence interval (CI), -18.1% to -0.04%]; p < 0.001). Following labral augmentation, the mean percent change in labral blood flow flux was significantly different from baseline both medially (-22.3% [95% CI, -32.7% to -11.9%]; p < 0.001) and laterally (-32.5% [95% CI, -41.5% to -23.6%]; p = 0.041). There was no significant difference between the changes in medial and lateral perfusion following repair (p = 0.136).</p><p><strong>Conclusions: </strong>Labral repair with capsular augmentation sustains a reduced blood flow to the native labrum and capsular tissue at the time of fixation. The biological importance of this reduction is unknown, but these findings may serve as a benchmark for other labral preservation techniques and support future correlations with clinical outcomes.</p><p><strong>Level of evidence: </strong>Therapeutic Level IV. 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The LDF probe measured microvascular blood flow flux within 1 mm<sup>3</sup> of the surrounding labral and capsular tissue of interest. Mean baseline measurements of flux were compared with readings immediately following capsular elevation and after completing labral augmentation. Blood flux changes were expressed as the percent change from the baseline measurements.</p><p><strong>Results: </strong>The present study included 41 patients (24 men [58.5%] and 17 women [41.5%]) with a mean age (and standard deviation) of 31.3 ± 8.4 years, a mean BMI of 24.6 ± 3.4 kg/m<sup>2</sup>, a mean lateral center-edge of angle 35.3° ± 4.9°, a mean Tönnis angle of 5.8° ± 5.8°, and a mean arterial pressure of 93.7 ± 10.9 mm Hg. Following capsular elevation, the mean percent change in capsular blood flow flux was significantly different from baseline (-9.24% [95% confidence interval (CI), -18.1% to -0.04%]; p < 0.001). 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引用次数: 0
摘要
背景：本研究的目的是通过使用激光多普勒流量计（LDF）来测量唇和自体移植物组织的微血管灌注，来检查关节镜下唇修复加囊增强对体内血流的影响。方法：本前瞻性病例系列包括年龄≥18岁的患者，他们接受了关节镜下髋臼唇修补术，并进行了囊膜增强术；2018年至2022年间，所有手术均由一名外科医生完成。LDF探针测量了周围感兴趣的唇和囊组织1mm3范围内的微血管血流流量。流量的平均基线测量值与囊膜抬高后和完成唇扩大后的读数进行比较。血流量变化表示为与基线测量相比的百分比变化。结果：本研究包括41名患者（24名男性[58.5%]和17名女性[41.5%]），平均年龄（和标准差）为31.3±8.4岁，平均BMI为24.6±3.4 kg/m2，平均外侧中心边缘角度为35.3°±4.9°，平均Tönnis角为5.8°±5.8°，平均动脉压为93.7±10.9 mm Hg。包膜抬高后，包膜血流量的平均百分比变化与基线显著不同（-9.24%[95%置信区间（CI），-18.1%--0.04%]；p＜0.001），唇血流量的平均百分比变化在内侧（-22.3%[95%CI，-32.7%--11.9%]；p<0.001）和外侧（-32.5%[95%CI，-41.5%--23.6%]；p=0.041）与基线有显著差异。修复后内侧和外侧灌注的变化没有显著差异（p=0.136）在固定时减少了到天然唇和囊组织的血流量。这种减少的生物学重要性尚不清楚，但这些发现可能作为其他唇口保存技术的基准，并支持未来与临床结果的相关性。证据级别：治疗级别IV。有关证据级别的完整描述，请参阅作者说明。
Labral Reconstruction via Capsular Augmentation Maintains Perfusion to the Acetabular Labrum and Locally Transferred Autograft: An in Vivo Laser Doppler Flowmetry Analysis.
Background: The purpose of the present study was to examine the effects of arthroscopic labral repair with capsular augmentation on blood flow in vivo with use of laser Doppler flowmetry (LDF) to measure microvascular perfusion of the labrum and autograft tissue.
Methods: The present prospective case series included patients ≥18 years old who underwent arthroscopic acetabular labral repair with capsular augmentation; all procedures were performed by a single surgeon between 2018 and 2022. The LDF probe measured microvascular blood flow flux within 1 mm3 of the surrounding labral and capsular tissue of interest. Mean baseline measurements of flux were compared with readings immediately following capsular elevation and after completing labral augmentation. Blood flux changes were expressed as the percent change from the baseline measurements.
Results: The present study included 41 patients (24 men [58.5%] and 17 women [41.5%]) with a mean age (and standard deviation) of 31.3 ± 8.4 years, a mean BMI of 24.6 ± 3.4 kg/m2, a mean lateral center-edge of angle 35.3° ± 4.9°, a mean Tönnis angle of 5.8° ± 5.8°, and a mean arterial pressure of 93.7 ± 10.9 mm Hg. Following capsular elevation, the mean percent change in capsular blood flow flux was significantly different from baseline (-9.24% [95% confidence interval (CI), -18.1% to -0.04%]; p < 0.001). Following labral augmentation, the mean percent change in labral blood flow flux was significantly different from baseline both medially (-22.3% [95% CI, -32.7% to -11.9%]; p < 0.001) and laterally (-32.5% [95% CI, -41.5% to -23.6%]; p = 0.041). There was no significant difference between the changes in medial and lateral perfusion following repair (p = 0.136).
Conclusions: Labral repair with capsular augmentation sustains a reduced blood flow to the native labrum and capsular tissue at the time of fixation. The biological importance of this reduction is unknown, but these findings may serve as a benchmark for other labral preservation techniques and support future correlations with clinical outcomes.
Level of evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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