US-guided Injection Research Articles

Solely Ultrasound-guided Botulinum Toxin Injection in the Cricopharyngeus Muscle: Successful Treatment in a Patient of Chronic Dysphagia Following Lateral Medullary Syndrome

Botulinum toxin (BTX) injection is a widely used procedure for the treatment of the dysfunction of the upper oesophageal sphincter. Although injection can be guided by ultrasound (US), electromyography or computed tomography, the most convenient option will be solely US-guided injection. No studies yet observed the effectiveness of solely US-guided BTX injection in the cricopharyngeus muscle (CPM) in dysphagia following lateral medullary syndrome (LMS). In this report, 50 U of BTX type-A was given in the right CPM in a patient of right LMS with chronic severe dysphagia, under the guidance of US. Dysphagia Outcome Severity Scale score improve from 1 to 6, Functional Oral Intake Scale score improved from 1 to 6 and penetration-aspiration scale score improved from 7 to 2 at 2 months follow-up. Solely US-guided BTX injection may be a feasible option for many rehabilitation units in managing dysphagia following LMS.

Clinical features of cervical dystonia patients classified by the COL-CAP concept and treated with ultrasound-guided botulinum neurotoxin.

<p>Cervical dys&shy;tonia (CD) is the most common form of focal dystonias, where the identification of the involved muscles, the determination of optimal botulinum neurotoxin A (BoNT-A) dose per muscle injection, and precise tar&shy;ge&shy;ting may be challenging. The aim of the current study is to compare local centre data with international data, enabling the iden&shy;tification of population and me&shy;tho&shy;do&shy;&shy;lo&shy;gical factors behind the differences, there&shy;by further improvement of the care of Hun&shy;ga&shy;rian patients with CD.</p>. <p>The data of all consecutive CD patients, who were injected with BoNT-A at the botulinum neurotoxin outpatient clinic at the Department of Neurology, University of Szeged between 11 August and 21 Sep&shy;tember 2021, were retrospectively col&shy;lected and analysed in a cross-sectional manner. The frequency of the involved muscles, determined by the application of the collum-caput (COL-CAP) concept, and the parameters for the BoNT-A formulations, injected via ultrasound (US)-guidance, were calculated and compared with available international data.</p>. <p>In the current study, 58 patients (19 males and 39 females) were involved with mean age of 58.4 (&plusmn; SD 13.6, range 24-81) years. The most common subtype was torticaput (29.3%). Tremor affected 24.1% of patients. The most injected muscles were trapezius (56.9% of all cases), followed by the levator scapulae (51.7%), splenius capitis (48.3%), sternocleidomastoid (32.8%), and semispinalis capitis (22.4%). The injected mean doses per patient were 117 &plusmn; SD 38.5 (range: 50-180) units for onaBoNT-A, 118 &plusmn; SD 29.8 (range: 80-180) units for incoBoNT-A, and 405 &plusmn; SD 162 (range: 100-750 units) for aboBoNT-A.</p>. <p>Although there were several similarities between the results of the current and the multicentre studies, all were carried out using the COL-CAP concept and US-guided BoNT-A injections, authors should pay attention to better distinction of torti-forms and the more frequent injection of especially the obliquus capitis inferior, mainly in cases with no-no tremor.</p>.

Ultrasound-guided injection of platelet-rich plasma in partial anterior cruciate ligament injury

Background The most common injuries in athletes are anterior cruciate ligament (ACL) tears and are associated with a nontouch pivoting harm mechanism in a deceleration maneuver. Platelet-rich plasma (PRP) therapy is a low-cost, simple, and minimally invasive therapy that can provide a concentration of natural blood growth factors. The use of PRP has been validated to be beneficial in enhancing ligament healing, mainly ACL in vitro, in animals, and in humans. Aim The goal of the work was to study the effect of ultrasound (US)-guided injection of PRP in the treatment of partial ACL injury. Patients and methods This study included 30 patients with partial ACL injuries selected from the outpatient medical institution of Physical Medicine, Rheumatology and Rehabilitation Department, Tanta University Hospitals. All patients underwent detailed history taking, clinical examination, and MRI examination. Visual analog score, Lachman test, Tegner Activity Scale, and knee outcome survey were performed before and after injection. Patients were injected with 5 ml of PRP two times 1 week apart under US guidance. Results There were significant differences between visual analog score before injection and 1 week after second injection and after 6 months of follow-up. There was insignificant improvement of the Lachman test 6 months after injection. There were significant improvements of Tegner Activity Scale, knee outcome survey of Activities of Daily Living Scale, and Cincinnati Sports Activity Scale after injection. Conclusion Although US-guided PRP injection failed to show any structural improvement in partial ACL injury, it showed improvement of pain and functional activity.

US-guided percutaneous thrombin injection to treat non-femoral artery pseudoaneurysms: preliminary experience and review of the literature.

To evaluate the clinical outcome of US-guided percutaneous thrombin injection in the treatment of non-femoral artery pseudoaneurysms (NFAP). Among all pseudoaneurysms treated in our institution, we retrospectively collected NFAP embolized with percutaneous thrombin injections from January 1, 2015, to December 31, 2021. The embolization was prompted for an ongoing antiaggregating/anticoagulation therapy, NFAP optimal US visibility, or high surgery-related risks. Causes, location, size and neck of NFAP, complications, number of repeated treatments, clinical success and patients clinical conditions at discharge were annotated. The endpoint for clinical success was the resolution of NFAP at postprocedural imaging, with no resort to surgery. Eight consecutive patients (5 females, median age 73years, range 46-84) underwent 16 procedures. Arterial damage was due to catheterization (3), CVC mispositioning (2), trauma, hemorrhagic diathesis and endoprosthesis endoleak. We treated humeral (2), subclavian (2), thyrocervical, anterior tibial, radial and pancreaticoduodenal arteries. Median pseudoaneurysm size was 530 mm2 (range 32-2400 mm2), with a thin (7/8) or non-visible (1/8) neck. No complications occurred. Clinical success was obtained in 7/8 patients (88%), with a single treatment in 4, multiple in 3 cases (4 embolizations, 3 and 2, respectively). One patient underwent surgical suture after the second failed attempt of percutaneous embolization. Seven patients were discharged in good clinical conditions; one died during hospitalization, due to the worsening of the underlying cardiac disease. Percutaneous US-guided thrombin injection to treat NFAP is feasible in selected cases, with rare complications. Clinical success is often reached, also by repeated injections.

Ultrasound-guided versus palpation-guided platelet-rich plasma injection for the treatment of chronic lateral epicondylitis: A prospective, randomized study.

This study aims to compare the effectiveness of palpation-guided and ultrasound (US)-guided platelet-rich plasma (PRP) injections in patients with chronic lateral epicondylitis (LE). Between January 2021 and August 2021, a total of 60 patients (34 males, 26 females; mean age: 40.5±10.9 years; range, 22 to 64 years) diagnosed with chronic LE were included. The patients were randomly allocated to either the palpation-guided (n=30) or the US-guided injection group (n=30) before they received PRP injection. All patients were assessed using the Visual Analog Scale (VAS), Disabilities of the Arm, Shoulder and Hand (DASH) scale, and grip strength at baseline and at one, three, and six months after injection. Baseline sociodemographic and clinical variables were statistically similar between two groups (p>0.05). The VAS and DASH scores improved significantly after the injection at each control, as well as grip strength in both groups (p<0.001). No statistically significant difference was found between the groups regarding VAS and DASH scores, and grip strength at one, three, and six months post-injection (p>0.05). No significant complication related to the injection was observed in any of the groups. This study demonstrates that both palpation-guided and US-guided PRP injection protocols can improve clinical symptoms and functional parameters of patients with chronic LE.

Effects of Ultrasound-Guided Injection Combined with a Targeted Therapeutic Exercise in Breast Cancer Women with Subacromial Pain Syndrome: A Randomized Clinical Study

In this randomized controlled study, we aimed to assess the effects of US-guided injections of the subacromial bursa followed by a personalized rehabilitation program for breast cancer (BC) survivors. We assessed patients with subacromial pain syndrome without tendon lesions and with a history of post-surgical non-metastatic BC. Thirty-seven patients were enrolled and randomly assigned 1:1 to receive US-guided corticosteroid injections combined with a personalized rehabilitation program (Group A; n: 19) or US-guided corticosteroid injections alone (Group B; n: 18). The primary outcome was pain relief, assessed using a numerical pain rating scale (NPRS). The secondary outcomes were muscle strength, shoulder function, and quality of life. No major or minor late effects were reported after the multidisciplinary intervention. Statistically significant within-group differences were found in terms of NPRS (p ≤ 0.05) in both groups. No significant between-group differences were reported after one week. However, the between-group analysis showed significant differences (p ≤ 0.05) after three months of follow-up in terms of pain intensity, muscle strength, shoulder function, and quality of life. Our findings suggested positive effects of a multidisciplinary approach including US-guided corticosteroid injections combined with a personalized rehabilitation program in improving pain intensity and quality of life of BC survivors with subacromial pain syndrome.

Intra-articular Injection of Bone Marrow Concentrate for Treatment of Patellofemoral Osteoarthritis: Preliminary Results Utilizing an Ultrasound-Guided Marrow Harvesting Technique

ObjectiveTo assess the effectiveness of intra-articular injection of bone marrow concentrate (BMC) under ultrasound (US) guidance in the treatment of patellofemoral osteoarthritis (OA), with clinical and volumetric magnetic resonance (MR) imaging follow-up. MethodsThis retrospective study included 96 consecutive patients referred for US-guided intra-articular injection of BMC for symptomatic patellofemoral OA for which conservative treatment had failed. A control group of 21 patients with symptomatic patellofemoral OA was included for comparison. Data on International Knee Documentation Committee (IKDC), Visual Analog Scale (VAS), and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scores as well as volumetric MR imaging (using T2 mapping sequence) were collected before and 12 months after injection, and the results were compared. ResultsNo technical adverse events were noted during bone marrow aspiration, BMC preparation, or intra-articular injection of BMC. No clinical adverse events were reported during long-term follow-up. All mean scores improved between baseline and 12 months after intra-articular injection of BMC (VAS 5.5 to 3.6, P < .0001; WOMAC 36.8 to 22.2, P < .0001; and IKDC 41.8 to 58.2, P < .0001). MR imaging at 1 year of follow-up after BMC treatment showed no statistically significant difference in hyaline cartilage volume compared with that at the baseline (P = .690), suggesting stabilization of the cartilage degradation process. In contrast, the group of untreated patients showed a significant decrease in the cartilage volume (P = .001), corresponding to a cartilage loss of 6.9%. ConclusionsThe results suggest that intra-articular injection of BMC under US guidance could be a promising option for the treatment of symptomatic patellofemoral OA and could promote the preservation of healthy residual cartilage volume.

S2569 Bleeding From Peg Tube Insertion Site due to a Gastroepiploic Artery Pseudoaneurysm

Introduction: Percutaneous endoscopic gastrostomy (PEG) is generally regarded as a safe procedure with rare complications. Gastroepiploic artery aneurysms (GEAAs) are extremely rare with only 22 cases reported in the literature and constituting 3-4% of all splanchnic artery aneurysms. GEAAs carry a mortality rate of 70% due to a 90% rate of rupture and can lead to complications like hemorrhagic shock. Therefore, early detection and management is necessary for survival. Case Description/Methods: A 55-year-old male with PEG tube placed for ALS-associated dysphagia presented with bleeding around the PEG tube site 10 days after placement. He was admitted twice for the complaint. On his first admission, EGD was normal and it was suspected that he had bleeding subcutaneously around the PEG site that self-resolved. He was discharged but promptly returned the next day with profuse bleeding around PEG tube. Emergent repeat EGD was again negative. This time, the diagnosis was confirmed with CTA of the abdomen that demonstrated a branch of the gastroepiploic artery that had an 8mm pseudoaneurysm. Interventional radiology successfully performed US-guided thrombin injection with successful thrombosis of the pseudoaneurysm. The patient’s PEG site bleeding stopped, and patient successfully discharged. Discussion: Gastric bleeding following PEG tube placement is rare and usually occurs secondary to injury of the small gastric vessels. Due to the rotated configuration of stomach, caution should be exercised when penetrating during the PEG insertion. The gastroepiploic artery (GEA) runs along the greater curvature and may be injured during PEG tube placement although this is rare. The bleeding in our patient was due to a pseudoaneurysm of the GEA as evident from CT scan. GEA peudoaneurysms are a very rare complication that occur due to iatrogenic injury to the artery. GEA pseudoaneurysms can present as abdominal pain, bleeding, and even shock due to intraperitoneal hemorrhage. Due to the risk of fatal bleeding by GEA pseudoaneurysms, early detection and management is needed. Our patient was treated with percutaneous thrombin injection leading to resolution of bleeding. Other treatment options include trans arterial embolization and more invasive including surgical repair. Systemic embolization is the main complication of thrombin injection and can be prevented by placing the needle tip away from the neck of the pseudoaneurysm. (Figure).Figure 1.: A (axial) and B (sagittal): Arrows represent a small 8 mm pseudoaneurysm off of the gastroepiploic artery at the level of the gastrostomy tube insertion site.

Description of an Ultrasound-Guided Erector Spinae Plane Block and Comparison to a Blind Proximal Paravertebral Nerve Block in Cows: A Cadaveric Study.

Simple SummaryOne of the most common surgical procedures performed in cattle is abdominal surgery, and this procedure is routinely performed in the standing adult animal. This procedure is performed using local anaesthetic techniques in order to eliminate pain and reduce the need for chemical and physical restraints. One of the most common locoregional anaesthetic techniques is the proximal paravertebral nerve block, in which a local anaesthetic is used to desensitize the nerves providing sensation to the flank region. The use of ultrasound-guided techniques has been demonstrated in multiple species, including humans, to be more accurate, safe and efficacious than traditional blind techniques. The aim of this paper was to develop an ultrasound-guided block that would target the nerves desensitized in the paravertebral nerve block of the flank. Additionally, our study aimed to evaluate the two techniques (blind and ultrasound-guided) in cow cadavers. The use of ultrasound guidance resulted in an apparent improvement in accuracy, and the blind technique remains a reliable approach. Further studies are warranted to develop and to evaluate the ultrasound-guided technique in live animals.The proximal paravertebral nerve block is commonly used to provide anaesthesia to the flank during standing surgical procedures in adult cattle. It has been reported that additional anaesthetic infiltration may be necessary to provide complete anaesthesia. In humans as well as animal species, another technique—the ultrasound (US)-guided erector spinae plane block (ESPB)—has been described. The goal of the present study was to develop and investigate an US-guided ESPB in comparison to a blind proximal paravertebral nerve block (PPNB) in cow cadavers. In 10 cadaver specimens, injections of methylene blue-lidocaine (1:1) were performed at the level of T13, L1 and L2 vertebras, on one side doing an ESPB block and, on the other side, a PPNB. Five cadavers were injected with high (40 mL per injection for PPNB and 20 mL for ESPB) and five with low (20 and 15 mL, respectively) volumes of injectate. For the ESPB, the ultrasound probe was oriented craniocaudally, and the ventral-cranial aspect of the articular processes (T13, L1 and L2) was targeted for injection. The dye spreading was evaluated by dissection. The landmarks for US-guided injection were easily visualized; however, injections were accidentally performed at T12, T13 and L1. Nevertheless, L2 was stained in 60% of ESPBs. Epidural spreading was observed with both techniques and all volumes. Viscera puncture was reported in two PPNBs. The ESPB resulted in similar nerve staining compared to the PPNB while using a lower volume of injectate. Even better staining is expected with a T13-L2 instead of a T12-L1 ESPB approach. Further studies are warranted to evaluate the clinical efficacy.

Anatomical description and short-term follow up clinical results for ultrasound-guided injection of medial collateral ligament bursa: New conservative treatment option for symptomatic degenerative medial meniscus tear

BackgroundIn this study, we investigated newly developed ultrasound (US)-guided medial collateral ligament (MCL) bursa injection as a conservative therapy for symptomatic degenerative medial meniscal (MM) tears. We aimed to describe the anatomical target and precise technique of this injection, confirm its accuracy using fresh cadaveric knees, and then evaluate preliminary clinical outcomes. MethodsAnatomical studies were performed on three fresh cadavers. For the clinical study, 50 patients with medial knee joint pain without knee osteoarthritis were treated with US-guided MCL bursa injection. Severity of pain was assessed pre-injection, and 1 week and 4 weeks post-injection using a 0–10 numerical rating scale (NRS). Clinical success was defined as a full return to daily activities. All patients underwent magnetic resonance imaging (MRI) within 1 week of the first injection. Patients who underwent surgery within 12 months of the first injection were investigated as clinically unsuccessful cases, and MRI and arthroscopic findings were examined. ResultsCompared with pre-injection (6.8 ± 1.2), the average NRS score was significantly lower at 1 week (1.8 ± 2.0) and at 4 weeks (1.5 ± 1.7) post-injection (both P < 0.01). The primary clinical success rate was 76.0%, and injection-related adverse events were not observed. Nine patients underwent surgery (arthroscopic surgery for degenerative flap tear (n = 7) and high tibial osteotomy for medial meniscus posterior root tear and proximal tibial malalignment (n = 2)). ConclusionsUS-guided MCL bursa injection is safe, reproducible, and effective for symptomatic MM degenerative tears. However, US-guided injections of the MCL bursa may be ineffective for flap tears and posterior root tears.

Ultrasound-Tailored Treatment of Subacromial Shoulder Pain

Background and Objectives: Subacromial shoulder pain is the most common cause of shoulder pain consultation in musculoskeletal practice. Partial supraspinatus tendon tears have frequently been treated using a subacromial corticosteroid injection or surgery. The clinical use of a platelet-rich plasma (PRP) injection is an alternative treatment method for the condition, despite the paucity of evidence of its efficacy. The objective of the study was to assess the clinical effectiveness of autologous PRP in comparison to steroid injection in terms of pain relief and functional restoration in subacromial shoulder pathology. Methodology: All the patients above 18 years of either sex presenting with complaints of shoulder pain and painful abduction and elevation of arm for more than 6 weeks and not received any steroid injection in the previous 6 months were included in the study. In intra-articular PRP (IA-PRP), i.e., test group, 20 patients received 3 ml of single IA PRP injection, and in the steroid group (control group), 20 patients received 1 ml of intra-articular corticosteroid (IA CS) into glenohumeral joint under ultrasound (US) guidance. All patients were prospectively followed for 6 months. Results: There were no differences in visual analog scale (VAS) and disability scores between the PRP and corticosteroid groups at 1-month follow-up. However, the PRP group had better scores than the corticosteroid group on both the VAS and disability scores at 3- and 6-month follow-up. The VAS and disability scores did not change significantly at 6-month follow-up in the corticosteroid group; however, the PRP group showed continued improvement in both VAS and disability scores between 1- and 6-month follow-up. The PRP group had better scores than the corticosteroid group on shoulder range of motion after postintervention follow-up after 1 month. There were no complications in either group. Conclusion: Both subacromial PRP and corticosteroid injections had a positive clinical response in the treatment of shoulder pain. In view of the reached results, it may be assumed that steroid injections may provide symptomatic relief but not promote healing which makes PRP injection a good alternative as it is simple, easy to use, easily available, prepared from patient's own blood, and cost-effective. US-guided injections may increase the efficacy of accurately targeted injections.

US for Traumatic Nerve Injury, Entrapment Neuropathy, and Imaging-guided Perineural Injection.

US is commonly performed to help diagnose traumatic peripheral nerve injury and entrapment neuropathy, particularly with superficial nerves, where higher spatial resolution provides an advantage over MRI. Other advantages of US include dynamic evaluation, easy contralateral comparison, fewer implant contraindications, less artifact from ferromagnetic debris, and facile needle guidance for perineural injections. The authors review peripheral nerve US for traumatic peripheral nerve injury with an emphasis on injury grading and entrapment neuropathy and describe best-practice techniques for US-guided perineural injections while highlighting specific techniques and indications. Online supplemental material is available for this article. ©RSNA, 2022.

The Course of Tarsal Tunnel Syndrome after Ultrasound-Guided Injections.

Local ultrasound (US)-guided injections of anesthetics with corticosteroids are commonly performed for the conservative treatment of tarsal tunnel syndrome (TTS). This retrospective study aimed to investigate the outcomes of TTS after US-guided injections. The study included patients who were diagnosed with TTS and received US-guided injections as part of their initial treatment. The pain levels were noted on a scale between zero and ten before and after each injection. The patients were divided into non-surgical and surgical groups. The nonsurgical group included patients who had received US-guided injections and did not proceed to surgical treatment, and the surgical group included those who received US-guided injections and ultimately underwent tarsal tunnel release (TTR). The two groups were compared in terms of age, post-injection follow-up time, and the amount of pain reduction immediately after injection (ΔPN). In the surgical group, outcomes of surgical treatment were also assessed. A total of 218 patients were diagnosed with TTS and received US-guided injections. After the injections, 169 patients (77.5%) did not go on to TTR (nonsurgical group) and 49 patients (22.5%) underwent TTR (surgical group). The average ages for the nonsurgical and surgical groups were 53.8 and 48.9 years (P = 0.03). The average time between the injection and final follow-up for the nonsurgical group was 339 days. The average time between the injection and TTR for the surgical group was 145 days. There were no differences in pain relief after the injections between the nonsurgical and surgical groups (mean ΔPN: 3.6 and 3.8, respectively). The average post-surgical follow-up time was 117 days. At final follow-up, 41 patients (84%) in the surgical group had complete resolution of pain and neurological symptoms. US-guided injection can be an effective conservative treatment option for patients with TTS. Younger patients may be more likely to proceed to TTR. Level III.

Effect of ultrasound-guided versus landmark-guided local corticosteroid injection for carpal tunnel syndrome: a systematic review and meta-analysis.

Carpal tunnel syndrome (CTS), the commonest neuropathy of the upper limb, can be managed with different therapeutic approaches. Local corticosteroid injection has been adopted widely in clinical practice, as it showed great efficacy in treating CTS. However, the best injection technique continues to be a subject of controversy. The aim of this systematic review and meta-analysis was to evaluate the efficacy of ultrasound-guided (US-guided) versus landmark-guided (LM-guided) corticosteroid injection on the clinical and electrophysiological outcomes in patients with CTS. We performed a systematic literature search in Medline, Embase, and CENTRAL, from which we included randomized controlled trials (RCTs) that compared US-guided and LM-based corticosteroid injection in treating individuals with CTS. We evaluated the following outcomes: Boston carpal tunnel questionnaire functional status scale (BCTQ-FSS) and symptom severity scale (BCTQ-SSS), and adverse event rate. The standardized mean difference (SMD) was used to represent continuous outcomes, while the risk ratio (RR) was used to represent dichotomous outcome. A total of 8 RCTs that enrolled 500 wrists were deemed eligible. US-guided injection showed a significantly better BCTQ-FSS (SMD = -0.22, 95% CI -0.39 to -0.04), BCTQ-SSS (SMD = -0.77, 95% CI -1.22 to -0.31), and adverse event rate (RR = 0.32, 95% CI 0.21 to 0.49) compared to LM-based injection. This meta-analysis showed the superiority of US-guided corticosteroid injection over LM-guided corticosteroid injection in enhancing functional status, improving symptom severity, and reducing the adverse event rate in individuals with CTS.

Comparison of dorsoventral and ventrodorsal approaches for ultrasound-guided quadratus lumborum block in cats: a cadaver study

ObjectiveTo assess the feasibility of an ultrasound (US)-guided quadratus lumborum (QL)-psoas muscle (Pm) interfascial plane injection using a dorsoventral (DV) approach, and to compare needle visualization and distribution pattern between DV and ventrodorsal (VD) approaches. Study designExperimental anatomical study. AnimalsA total of 14 cat cadavers. MethodsBilateral in-plane US-guided injections in the QL-Pm plane were performed at the level of the second lumbar (L2) transverse process. A spinal needle was inserted using either a VD or DV approach. A total volume of 0.4 mL kg–1 of a solution of ropivacaine 0.18%, tissue dye and iohexol (350 mg mL–1), in a proportion of 3:1:1, respectively, was injected bilaterally. Spread of injectate was compared and evaluated using US, computed tomography (CT) scanning and anatomical dissection. Presence of dye on the sympathetic trunk was compared between methods using Kappa (κ) coefficient of agreement. ResultsThe QL-Pm plane was visualized, and dye was present in the target plane using both approaches. Needle visualization in the VD approach was enhanced compared with the DV approach (p = 0.0005). Mean distribution along the sympathetic trunk was 4.8 and 4.1 segments in the VD and DV approaches, respectively, showing non-statistical differences. The ventral branches of L1, L2 and L3 were successfully stained in 11/14 and 6/14 using the VD and DV approaches, respectively. Substantial agreement (κ = 0.61) of sympathetic trunk staining was observed between CT scan and anatomical dissection. Dye was observed cranial to the diaphragm in 7/8 cases on CT with both approaches. Epidural and abdominal cavity dye distribution was not observed. Conclusions and clinical relevanceThe DV approach to the QL-Pm plane could be an alternative to the VD approach. Both approaches seem capable of reaching the spinal nerves, the sympathetic trunk and both splanchnic and coeliac nerves in feline cadavers.

First Spanish study on the effectiveness of ultrasound-guided sacroiliac joint injection in patients with spondyloarthritis.

ObjectiveThe aim was to assess clinical improvement after US-guided injection of CSs into the SI joint of patients with SpA.MethodsThis was an observational, descriptive, retrospective study of patients with SpA and sacroiliitis who received an US-guided injection into the SI joint between 1 June 2020 and 31 May 2021. Means were compared using Student’s paired t-test for the variables visual analog scale (VAS), BASDAI, ASDAS, CRP and ESR before and after the procedure. We evaluated the association between these variables and the clinical response using the odds ratio.ResultsWe analysed 32 patients with SpA [age 42.69 (8.19) years; female sex, 56.25%], with a VAS score of 7.88 (0.79), BASDAI of 5.43 (1.48) and ASDAS of 3.27 (0.86) before the procedure. At 2–3 months, 75% of patients had improved: VAS 3.81 (2.33) (−4.07, P < 0.0001) and BASDAI 3.24 (1.6) (−2.19, P < 0.0001). At 5–6 months, 59.37% had improved: VAS 4.63 (2.31) (−3.25, P < 0.0001), BASDAI 3.57 (1.67) (−1.86, P < 0.0001) and ASDAS 2.27 (0.71) (−1.0, P < 0.0001). Bone marrow oedema resolved in 87.5% of cases compared with the previous MRI scan. No significant association was identified with the clinical response to the injection.ConclusionUS-guided injection of CSs into the SI joint of patients with SpA and active sacroiliitis leads to an improvement in symptoms that is maintained at 5–6 months. The procedure is effective, safe, inexpensive and easy to apply.

Ultrasound Use by Upper Extremity Surgeons in 2020: A Survey of ASSH Members.

The use of musculoskeletal ultrasound (US) among hand surgeons appears to be increasing. The purpose of this study was to determine the utilization patterns and attitudes regarding US among American Society for Surgery of the Hand (ASSH) members in 2020 as well as the changes in usage patterns since a previous survey in 2015. In 2020, an updated and expanded 27-question survey was distributed to 4852 members of the ASSH. Questions assessed respondent demographics, training, and practice patterns, and access, utilization, training, and opinions pertaining to US. A total of 418 surveys (8.6%) were analyzed. Compared to 2015, there was an increase in the percentage of respondents using US for diagnostic purposes (51%-68%), as well as having personal access to US machines (43% to 58%). US use to assist in diagnosing carpal tunnel syndrome increased from 19% to 27%. The most common reason for using US was convenience and practice efficiency, while the most common reasons for not using US was no machine access. In 2020, 33% of respondents performed US-guided injections. Compared to 2015, the majority of responding upper extremity surgeons now have personal access to US machines. Utilization of diagnostic US appears to be increasing, and two-thirds of respondents believed that US use will continue to increase among upper extremity surgeons.

Accuracy of placement of ultrasound-guided corticosteroid injection for subacromial pain (impingement) syndrome does not influence pain and function: Secondary analysis of a randomised controlled trial.

To investigate whether the accuracy of placement of ultrasound-guided (US-guided) corticosteroid injections for subacromial pain (impingement) syndrome (SAPS) influences pain and function outcomes. This was a secondary analysis of data collected in a previous randomised controlled trial (RCT). Video images of US-guided subacromial corticosteroid injections delivered in the RCT were reviewed to categorise injection accuracy into three groups: definitely/probably not in the subacromial bursa (Group 1); probably in the subacromial bursa (Group 2); and definitely in the subacromial bursa (Group3). The primary outcome was the Shoulder Pain and Disability Index (SPADI) totalscore. Secondary outcomes included SPADI pain and function subscales andparticipants' self-reported global impression of change. Outcomes were compared between the accuracy groups after adjusting for pre-selected baseline characteristics. US-guided injection accuracy data were available for 114 participants: 22 categorised into Group 1, 21 into Group 2 and 71 into Group 3. There were no significant differences in mean total SPADI scores between the three injection accuracy groups at 6weeks (Group 2 vs. 1: 8.22 (95% CI -4.01, 20.50); Group 3 versus 1: -0.57 (95% CI -10.27, 9.13) or 6months (Group 2 vs. 1: 12.38 (95% CI -5.34, 30.10); Group 3 versus 1: 3.10 (95% CI -11.04, 17.23). The accuracy of injection placement in SAPS did not influence pain and function, suggesting that improvements in patients' outcomes using subacromial corticosteroid injections can be achieved without US guidance.

Tietze's syndrome presenting as enthesitis diagnosed by ultrasound: A case report.

Tietze's syndrome (TS) is an inflammatory disorder characterised by painful, non-suppurative swelling in the sternocostal or sternoclavicular joint. The aetiology of TS is unknown. Herein, we described a case of isolated enthesitis in the sternocostal joint in a 42-year-old male patient whose clinical course led to the diagnosis of TS. A 42-year-old male Japanese patient (HLA-B27 negative) presented with chronic anterior chest wall pain. Mild swelling and tenderness were found in the right, third sternocostal joint (rt.3STCJ). No other arthralgia was present. Ultrasonography (US) of the rt.3STCJ showed hypoechoic thickening and power Doppler signal in the anterior radiate sternocostal ligament with mild synovial hypertrophy of the STCJ. US also depicted cortical bone erosion at the sternum with neovascularisation. Magnetic resonance imaging with T2-weighted short-tau inversion recovery showed high signal intensity in the bone marrow of the sternum and adjacent soft tissue around the rt.3STCJ. Based on these findings, TS with the enthesitis in the rt.3STCJ was diagnosed. The patient received a US-guided corticosteroid injection, and the symptoms completely resolved 10months later. Enthesitis may cause TS. US is a readily available, sensitive imaging technique useful for diagnosing TS.

Ultrasound-guided interventions in rheumatology.

Over the last few years, percutaneous procedures have undergone great advances, thanks to the ultrasound (US) guidance, due to the technical improvements in the US field, combined with the greater availability, good portability, and reduced cost of US devices. The direct target visualization and the real-time imaging performance enabled by US-guidance account for an improved accuracy in needle placement in several rheumatology interventions. So, ultrasound-guided procedures contribute to several diagnostic or therapeutic procedures such as fluid aspiration or treatment instillations of common joints, tendons, and bursas. In clinical practice, this fact is especially important in the case of depth areas like the hip, small anatomical structures as tendon sheaths or nerves in tenosynovitis or nervous blocks, or complex anatomical structures like the spine's facet joints. The US-guide is an essential tool for performing diagnostic procedures as synovial biopsy. US can also be combined with other imaging techniques, like the establishment portal arthroscopy for instance. Compared to older blind procedures, US-guided injections are more accurate and safer, and they result in better clinical outcomes in terms of joints improvement in function and decreased risk of damages caused by needle misplacement. With the ultrasound guided treatment, we can avoid the instillation of therapeutic products outside the predetermined target, which may be sometimes potentially harmful. The aim of this article is to describe the main generalities of ultrasound-guided procedures in rheumatology, their main advantages and disadvantages, and their particularities in joints where they are most frequently used, such as the shoulder, hip, and knee.