No risk of iatrogenic peroneal nerve injury in all-inside lateral meniscal repair with either 14- or 18-mm needles through the popliteus tendon in the standard arthroscopic knee conditions.

PURPOSE: The objectives of this prospective study were to evaluate the risk of peroneal nerve (PN) injury in simulated all-inside lateral meniscal repair with sutures placed through the popliteus tendon (PT) and to determine the optimal needle length. METHODS: Twenty-nine axial magnetic resonance images (MRI) of postoperative knees with infused intra-articular fluid and in a figure-of-four position were used. The cross-sectional length of the PT was divided into four equal parts with measurements performed at the 25%, 50% and 75% points according to their anteroposterior arrangement. Simulated repairs were performed with 14-mm and 18-mm straight needles via the anteromedial (AM) and anterolateral (AL) portals. Distances from the needle tip following full insertion through the PT to the PN and from the anterior PT border to the posterior knee capsule were measured to determine PN injury risk and ideal needle insertion depths at the different landmarks. RESULTS: Simulated repairs on the 29 knee MRI images resulted in no incidences of PN injury. The average distances from the needle tip to the PN of the 14-mm needle were significantly greater than the 18-mm needle in all the simulated repairs (P < 0.02), except at the 25% point in the AM approach. When using the 14-mm needle, capsule underpenetration was found in three knees (10.3%) at the 25% point during the AM approach, in one knee (3.4%) at the 50% and 75% points in the AM approach, and in all repairs from the AL portal. The average distances from the anterior PT border to the capsule at the 25%, 50%, and 75% division points on the PT in the AM approach were 7.7 ± 2.7 mm, 7.9 ± 2.5 mm and 7.6 ± 2.8 mm, respectively, whilst in the AL approach were 8.4 ± 2.9 mm, 8.1 ± 2.8 mm and 7.6 ± 2.7 mm. CONCLUSION: Simulated all-inside lateral meniscal repair with suture placement through the PT with 14-mm and 18-mm needles was safe. The measurements in this study can be used to determine potential PN injury risk in relation to the PT and the appropriate needle length for safe lateral meniscal repairs.

Comparison of the effect of ketorolac versus triamcinolone acetonide injections for the treatment of de Quervain's tenosynovitis: a double-blind randomized controlled trial.

BACKGROUND: De Quervain's disease is tenosynovitis of the first dorsal compartment causing severely painful radial-side wrist pain and impaired function. Steroids are effective in treating this condition due to their anti-inflammatory properties. However, this drug causes problems such as hypopigmentation, and is contradicted in diabetes mellitus patients. Non-steroidal anti-inflammatory drug (NSAID) which are efficacious in shoulder pathology and not contraindicated in diabetics and can be used to avoid the local effects of steroids could be beneficial for some patients. The present study was a randomized controlled trial to examine the differences in pain scores and functional response to local injections of a corticosteroid and the NSAID ketorolac. METHODS: Sixty-four patients with radial styloid tenosynovitis were randomized using a computer-generated random number table into two groups receiving either a ketorolac injection or a triamcinolone injection. We evaluated post-injection pain intensity using a verbal numerical rating scale (VNRS), functional outcomes using the Thai Disabilities of the Arm, Shoulder and Hand (DASH) scale, and evaluated grip and pinch strengths, recorded at baseline and 6 weeks after the injection. RESULTS: Thirty-one participants in the ketorolac group and 29 participants in the triamcinolone group completed the study and were included in the analysis. There were no significant differences in the assessments at baseline. At the 6-week conclusion of the study, patients in the triamcinolone group had a statistically lower average pain score than in the ketorolac group (0.7 ± 2.0 vs 5.3 ± 3.2, P < 0.001), higher DASH functional score (4.4 ± 6.5 vs 34.1 ± 20.2, P < 0.001), higher right grip strength (60.8 ± 16.8 vs 49.2 ± 18.6, P < 0.015), and higher left grip strength (59.8 ± 18.1 vs 50.3 ± 18.0, P < 0.04). However, there was no difference in pinch strength. CONCLUSIONS: Our study found that ketorolac injections resulted in inferior pain reduction, functional score and grip improvement than triamcinolone injection in patients with radial styloid tenosynovitis. Future studies are required to examine the effects of ketorolac in larger group and with longer follow-up periods to further elucidate the findings of this study. TRIAL REGISTRATION: The study was registered at Clinicaltrials.in.th (TCTR20200909006).

Comparing post-operative pain between single bundle and double bundle anterior cruciate ligament reconstruction: a retrospective study.

BACKGROUND: In anterior cruciate ligament (ACL) reconstruction, the clinical outcome and level of post-operative pain are important factors. To date there have been no studies evaluating differences in post-operative pain between single bundle and double bundle ACL reconstruction with a hamstring graft. HYPOTHESIS/PURPOSE: We hypothesized that post-operative pain in single bundle ACL reconstruction would be less than in double bundle ACL reconstruction. This study was to compare post-operative pain between patients undergoing single bundle versus double bundle ACL reconstruction. STUDY DESIGN: Cohort study. METHODS: This was a retrospective study comparing post-operative pain scores between single bundle and double bundle ACL reconstruction. Each patient was given our standard regimen of oral diclofenac (25 mg/tab) three times per day and paracetamol (500 mg/tab) six times per day for 1 day post-operatively. If the patient complained of moderate to severe pain (pain numeric rating scale (PNRS) > 3), 3 mg of morphine was injected intravenously every 3 h for 24 h and 1 mg of morphine as a rescue medication every 1 h for 24 h. PNRS and morphine consumption were recorded at 4-h intervals for 24 h. RESULTS: 209 patients were included in this study of whom 102 and 107 patients received single bundle and double bundle ACL reconstruction, respectively. The average post-operative pain scores of the single bundle group were lower at all time points. Linear mixed effect regression analyses showed that the single bungle group had lower post-operative pain than the double bundle group after adjusting for confounders (beta = - 0.45; 95% CI = - 0.838, - 0.062) but there was no statistically significant difference between numbers of bundle ACL reconstruction with regard to morphine consumption. CONCLUSION: Single bundle ACL reconstruction had significantly lower post-operative pain scores than double bundle ACL reconstruction. CLINICAL RELEVANCE: Double bundle ACL reconstruction results in higher post-operative pain, which may slow the start of rehabilitation and reduce patient satisfaction. In middle-aged adult patients with low-demand activities, we suggest performing a single bundle ACL reconstruction.

Patient Position Is Related to the Risk of Neurovascular Injury in Clavicular Plating: A Cadaveric Study.

BACKGROUND: Fixation of clavicle shaft fractures with a plate and screws can endanger the neurovascular structures if proper care is not taken. Although prior studies have looked at the risk of clavicular plates and screws (for example, length and positions) to vulnerable neurovascular structures (such as the subclavian vein, subclavian artery, and brachial plexus) in the supine position, no studies to our knowledge have compared these distances in the beach chair position. QUESTIONS/PURPOSES: (1) In superior and anteroinferior plating of midclavicle fractures, which screw tips in a typical clavicular plating approach place the neurovascular structures at risk of injury? (2) How does patient positioning (supine or beach chair) affect the distance between the screws and the neurovascular structures? METHODS: The clavicles of 15 fresh-frozen cadavers were dissected. A hypothetical fracture line was marked at the midpoint of each clavicle. A precontoured six-hole 3.5-mm reconstruction locking compression plate was applied to the superior surface of the clavicle by using the fracture line to position the center of the plate. The direction of the drill bits and screws through screw holes that offer the greater risk of injury to the neurovascular structures were identified, and were defined as the risky screw holes, and the distances from the screw tips to the neurovascular structures were measured according to a standard protocol with a Vernier caliper in both supine and beach chair positions. Anteroinferior plating was also assessed following the same steps. The different distances from the screw tips to the neurovascular structures in the supine position were compared with the distances in the beach chair position using an unpaired t-test. RESULTS: The risky screw holes were the first medial and second medial screw holes. The relative distance ratios compared with the entire clavicular length for the distances from the sternoclavicular joint to the first medial and second medial screw holes were 0.46 and 0.36 in superior plating and 0.47 and 0.37 in anteroinferior plating, respectively. The riskiest screw hole for both superior and anteroinferior plates was the second medial screw hole in both the supine and beach chair positions (supine superior plating: 8.2 mm ± 3.1 mm [minimum: 1.1 mm]; beach chair anteroinferior plating: 7.6 mm ± 4.2 mm [minimum: 1.1 mm]). Patient positioning affected the distances between the riskiest screw tip and the nearest neurovascular structures, whereas in superior plating, changing from the supine position to the beach chair position increased this distance by 1.4 mm (95% CI -2.8 to -0.1; supine 8.2 ± 3.1 mm, beach chair 9.6 ± 2.1 mm; p = 0.037); by contrast, in anteroinferior plating, changing from the beach chair position to the supine position increased this distance by 5.4 mm (95% CI 3.6 to 7.4; beach chair 7.6 ± 4.2 mm, supine 13.0 ± 3.2 mm; p < 0.001). CONCLUSIONS: The second medial screw hole places the neurovascular structures at the most risk, particularly with superior plating in the supine position and anteroinferior plating in the beach chair position. CLINICAL RELEVANCE: The surgeon should be careful while making the first medial and second medial screw holes. Superior plating is safer to perform in the beach chair position, while anteroinferior plating is more safely performed in the supine position.

Proximity of the Coracoid Process to the Neurovascular Structures in Various Patient and Shoulder Positions: A Cadaveric Study.

PURPOSE: To examine and compare the distances from the anteromedial aspects of the coracoid base and the coracoid tip to the neurovascular structures in various patient positions. METHODS: The experiment was conducted in 15 fresh-frozen cadavers. We dissected 15 right and 15 left shoulders to measure the distances from the anteromedial aspects of the coracoid base and the coracoid tip to the lateral border of the neurovascular structures in the horizontal, vertical, and closest planes. The measurements were performed with the cadavers in the supine, lateral decubitus, and beach-chair positions. With cadavers in the beach-chair position, we evaluated 5 arm postures (arm at side, 45° of abduction, 90° of abduction, 45° of forward flexion, and 90° of forward flexion). RESULTS: The shortest distance from the coracoid base to the neurovascular structures was found in the beach-chair position with arm at side in the horizontal plane (27.4 ± 4.9 mm) and 90° of abduction in the vertical (21.8 ± 4.2 mm) and closest (19.5 ± 4.2 mm) planes. The distances in each plane were statistically significant compared with the supine and lateral decubitus positions (P < .005). Between the coracoid tip and the neurovascular structures, the shortest distance was found in the beach-chair position with 90° of abduction, with 29.3 ± 7.7 mm, 20.8 ± 4.9 mm, and 18.5 ± 5.1 mm in the horizontal, vertical, and closest planes, respectively. The distances were statistically significant in all planes compared with the supine and lateral decubitus positions (P < .005). CONCLUSIONS: Shoulder surgery in the area of the coracoid process is safe, especially with the patient in the supine position. The distance from the coracoid process to the neurovascular structures was closest in the beach-chair position with 90° of arm abduction. CLINICAL RELEVANCE: This study determined the distances between the coracoid process and the neurovascular structures during surgery around the coracoid process.

Aspirin versus rivaroxaban in postoperative bleeding after total knee arthroplasty: a retrospective case-matched study.

BACKGROUND: Venous thromboembolic disease (VTE) is a complication not uncommon following total knee arthroplasty. Postoperative bleeding-related complications are a concern in many guidelines. The authors aimed to compare the amount of postoperative drainage from closed suction drainage, transfusion rate, and postoperative complications between aspirin and rivaroxaban as VTE prophylaxes after total knee arthroplasty. METHODS: This study was a retrospective case-matched study of 155 patients. The data were collected between 2008 and 2015 from patients who had total knee arthroplasty using aspirin or rivaroxaban as the VTE prophylaxis. Seventy-nine patients received aspirin, and 76 patients received rivaroxaban. A single surgeon operated on all patients with the same surgical technique and patient care protocol. RESULTS: The total closed suction drainage outputs at 48 h were not significantly different between the aspirin and rivaroxaban groups (p = 0.10). Eighteen percent of patients in the aspirin group and 25% of patients in the rivaroxaban group received blood transfusions (p = 0.37). There were no bleeding-related complications or VTE in either group. CONCLUSIONS: Aspirin and rivaroxaban were effective and safe as VTE chemoprophylaxis in total knee arthroplasty.

Using a Nice knot to simplify and strengthen closed reduction in displaced distal clavicle fracture: a technical note.

A displaced distal clavicle fracture often necessitates surgical intervention, with various open and closed reduction options. Open reduction is easier but raises blood supply concerns, while closed reduction can involve complex deforming forces with differing displacement vectors. Herein, we demonstrate how a Nice knot with its sliding and self-locking qualities can be used to make closed reduction easier and the alignment more secure. A case report illustrates this Nice knot application in a 61-year-old male with a distal clavicle fracture. The Nice knot's ability to be loosened and retightened ensured more precise alignment in this case. The Nice knot technique is a versatile option for easier and more secure distal clavicle fracture management.

Assessing Risk of Iatrogenic Peroneal Nerve Injury in All-Inside Lateral Meniscal Repair Between Standard Vs. Arthroscopic MRI.

BACKGROUND: Various studies have examined the risk of peroneal nerve injury with use of standard magnetic resonance imaging (MRI) of the knee. However, the position of the knee during standard MRI is different from that during an actual arthroscopic lateral meniscal repair. The purpose of the present study was to evaluate and compare the risk of peroneal nerve injury during simulated all-inside lateral meniscal repairs on the basis of MRI scans made with the knee in both positions. METHODS: With use of axial MRI scans made with the knee in the standard position (i.e., in 30° of flexion) and in the actual position used during arthroscopic lateral meniscal repair (i.e., in a figure-of-4 position), direct lines were drawn to simulate the passage of a straight all-inside meniscal repair device from the anteromedial and anterolateral portals to the medial and lateral borders of the popliteus tendon. The distance from the closest passage of each line to the peroneal nerve was measured. If a line touched or passed through the peroneal nerve, a risk of iatrogenic injury was noted and a new line was drawn from the same portal to the outer border of the peroneal nerve. The danger area was measured from the first line to the new line along the joint capsule. RESULTS: In 28 Thai patients, the shortest distances from each line to the peroneal nerve were significantly shorter on the MRI scans made with the knee in the standard position than on those made with the knee in the arthroscopic position (p < 0.05 for all). All danger areas on the MRI scans that were made with the knee in the arthroscopic position were included within the danger areas on the scans that were made with the knee in the standard position. CONCLUSIONS: Standard MRI scans of the knee can be used to determine the risk of peroneal nerve injury at the time of arthroscopic lateral meniscal repair, although the risks are slightly overestimated. LEVEL OF EVIDENCE: Diagnostic Level III . See Instructions for Authors for a complete description of levels of evidence.

Partial infraspinatus tear with bursitis following an mRNA vaccination: a case report.

We report a case of a shoulder injury related to vaccine administration (SIRVA) that developed symptoms 2 weeks following a coronavirus disease 2019 (COVID-19) vaccination and improved after receiving both intraarticular and subacromial corticosteroid injections. Presentation of case: A 52-year-old Thai female without preexisting shoulder pathology and symptom had developed left shoulder pain for 3 days. Two weeks prior to shoulder pain, she received an mRNA COVID-19 vaccination. She positioned her arm in combined internal rotation with 60° of arm abduction. Her symptoms were pain in all directions of shoulder motion and tenderness at the bicipital groove and over the deltoid area. The testing of the rotator cuff power of the infraspinatus tendon showed pain. Intervention and outcome: An MRI showed infraspinatus tendinosis with a low-grade (almost 50%) bursal-surface tear at the footprint of the superior fiber with associated overlying subacromial-subdeltoid bursitis. She was treated with both intraarticular and subacromial corticosteroid injections (triamcinolone acetate (40 mg/ml) 1 ml+1% lidocaine with adrenaline 9 ml). She did not respond to oral naproxen but responded well to intraarticular and subacromial corticosteroid injections. Relevance and impact: The best way to deal with SIRVA is to prevent this condition by using the correct injection technique. First, the injection site should be two or three fingerbreadths below the mid-acromion process. Second, the needle's direction should be perpendicular to the skin. Third, using the correct needle penetration depth.

Using a modified recycled corkscrew suture anchor to pass a suture under the coracoid base.

INTRODUCTION: A common shoulder injury is a distal clavicle fracture which can be treated with various methods such as coracoclavicular (CC) stabilization, fixation with a distal clavicular locking plate, hook plate or tension band wiring. In CC stabilization, the most difficult step is passing a suture under the coracoid base because there is no standard instrument matched to the shape of the coracoid process. We propose a technique using a modified recycled corkscrew suture anchor to pass a suture under the coracoid base. CASE PRESENTATION: A 30-year-old Thai female with a left clavicle fracture was scheduled for CC stabilization. In the step of passing a suture under the coracoid base, we used a modified recycled corkscrew suture anchor to quickly and easily perform this step. CLINICAL DISCUSSION: There are some specialized commercial tools which are designed to pass a suture under the coracoid base but all are very expensive (∼ $1400-1500 per piece). To overcome this problem, we modified a used sterilized corkscrew suture anchor to pass a suture under the coracoid base, normally done from the medial to lateral sides, recycling a device usually discarded after use.

Using a right-angle forceps clamp to pass a suture under the coracoid base in coracoclavicular stabilization: a technical note.

A distal clavicle fracture is a common injury of the shoulder joint. Coracoclavicular (CC) stabilization is one of the recommended procedures for treating the distal clavicle fracture. However, it is difficult to pass the suture under the coracoid process with instruments normally available in the operating room (OR). Herein, the authors describe a simple technique to accomplish this suture passing quickly and easily using tools available in the OR. Case presentation: A 59-year-old Thai female presented with right shoulder pain after a fall. The physical examination showed a prominent bulge and tenderness at the right distal clavicle. A radiograph of both clavicles showed a right displaced distal clavicle fracture. After discussing the possible treatments with her, she decided to have CC stabilization as we recommended. Clinical discussion: In CC stabilization, the most important but difficult step is passing a suture under the coracoid base. There are some specialized commercial instruments which are matched to the shape of the coracoid process to make it easy to perform this step, but all are highly expensive (~$1400-1500 per piece) and thus often not available in ORs in resource-limited settings. Conclusion: The authors devised a technique using standard surgical instruments and materials available in all ORs to enable them to pass a suture easily and quickly under the coracoid base.

Looping a suture under the coracoid process using a modified pelvic suture needle in coracoclavicular stabilization.

A distal clavicle fracture is a common shoulder injury. Coracoclavicular (CC) stabilization is a popular procedure for treating this injury. However, with this method, there is a technical difficulty in looping the suture under the coracoid base with instruments normally available in the operating room (OR). Herein, the authors describe modifying a pelvic suture needle to ease this process. Case presentation: An 18-year-old Thai female presented with left shoulder pain after a fall while cycling. The physical examination showed tenderness at the prominent distal clavicle. The radiograph of both clavicles showed a displaced distal clavicle fracture of the left shoulder. After discussing the treatment, she decided to have CC stabilization as the authors recommended. Clinical discussion: CC stabilization is one of the main surgical techniques used in treating an acute displaced distal clavicle fracture. The most important but difficult step of the CC stabilization is passing a suture under the coracoid base. To make this step easier, various commercial tools have been created, however, they are expensive ($1400-1500 per piece), and most operating rooms in resource-limited countries do not have them available. The authors modified a pelvic suture needle specifically for use in looping a suture under the coracoid process, which is hard to do with standard surgical tools.

Displaced varus proximal humerus fracture with conservative treatment: a case report.

The authors report a case of an elderly female with a displaced varus misalignment of a proximal humerus fracture which met the indications for surgery, but the patient was treated conservatively with an arm sling due to the wishes of the patient and her relatives. The clinical outcome was nearly full function compared with the right shoulder. Presentation of case: A 65-year-old Thai female presented with right shoulder pain 1 h after a fall during which her right shoulder hit the floor. Radiographs of the right shoulder in anteroposterior and lateral transcapular views showed a proximal humerus fracture with varus misalignment. The patient and her relatives decided on conservative treatment with an arm sling. At 12 weeks following the fall she was able to move her right shoulder nearly equally to the left shoulder. Intervention and outcome: The authors discussed the treatment options with the patient and her relatives and recommended open reduction and internal fixation with a locking plate and screw, but they decided on conservative treatment with an arm sling. At 12 weeks following the fall she was able to move her right shoulder nearly equally to the left shoulder. She had no pain and could do normal life activities with the right shoulder. Relevance and impact: Patients with severe varus deformity are usually treated with surgery. If there are contraindications for surgery, the stability of the fracture should first be evaluated through radiographs of the fracture in various arm positions.

Screening for or diagnosing medial meniscal root injury using peripheral medial joint space width ratio in plain radiographs.

To evaluate the sensitivity and specificity for screening and diagnosis of medial meniscal root injury using the distance ratio of medial joint space width between affected and unaffected knees in patients with potential medial meniscal root injury (MMRI) using plain radiographs, the study enrolled 49 patients with suspected MMRI who were then evaluated for MMRI using plain radiographs of both knees in the anteroposterior view and magnetic resonance imaging (MRI) findings. The ratios of peripheral medial joint space width between the affected and unaffected sides were calculated. The cut point value, sensitivity and specificity were calculated according to a receiver operating characteristic (ROC) curve. In the study, 18 and 31 patients were diagnosed with and without MMRI, respectively. The mean peripheral medial joint space width ratios comparing the affected side to the unaffected side in the standing position of the anteroposterior view of both knees in the MMRI and non-MMRI groups were 0.83 ± 0.11 and 1.04 ± 0.16, respectively, which was a significant difference (p-value < 0.001). The cut point value of the peripheral medial joint space width ratio between the affected and unaffected sides for suspected MMRI was 0.985, with sensitivity and specificity of 0.83 and 0.81, respectively, and for diagnosis was 0.78, with sensitivity and specificity of 0.39 and 1.00, respectively. The area under the ROC curve was 0.881. Patients with a possible MMRI had peripheral medial joint space width ratios less than patients with non-MMRI. This test can be used for reliably screening for or diagnosing medial meniscal root injury in primary or secondary care settings.

Osteophyte-related medial collateral ligament injury in asymptomatic osteoarthritis following minor trauma: a case report.

A proximal deep medial collateral ligament (MCL) injury usually occurs in high-impact sports such as football or hockey. This injury is not common in low-energy trauma but the predisposing factor, in this case, was an osteophyte located next to the deep MCL ligament, which had likely caused degenerative changes to the ligament from chronic irritation, resulting in reduced strength of the ligament. Case presentation: A 78-year-old Thai female presented with left knee pain 1 h after a low-energy trauma caused by a fall. The MRI showed deep MCL and medial meniscal root injuries, a nondisplaced lateral femoral condyle, and also revealed a large osteophyte near the midpart of the MCL, with a blunt persistent projection from the osteophyte pushing against the MCL where the injury was located. She was treated with a knee brace, a gait aid for walking, and analgesic pain control. Her symptoms gradually improved over the next few weeks. Clinical discussion: If an osteophyte touches a ligament, it can cause degenerative changes to the ligament from chronic irritation, resulting in reducing the strength of the ligament and may be causing some degree of degenerative changes and tightening of the MCL in its at-rest state, resulting in an increased chance of injury when it is required to resist a sudden external force, even from a minor trauma. Conclusion: When there is an osteophyte pushing against a ligament, there is an increased chance of ligament injury when even a minor trauma stresses that ligament.

The Risk of Iatrogenic Posterior Neurovascular Injuries in Lateral Meniscal Repair Based on the Standard Arthroscopic Knee Position: A Magnetic Resonance Imaging Study.

Background: Repair of the posterior horn of the lateral meniscus using an all-inside meniscal repair device involves the risk of iatrogenic posterior neurovascular injuries. Previous studies that have evaluated this risk were based on preoperative magnetic resonance imaging (MRI) with the knee in 30° of flexion and used landmarks that are impractical in the actual operative situation. Purpose: To use an MRI model simulating actual knee arthroscopic conditions to (1) compare the potential risk of injuries related to the lateral border of the posterior lateral meniscus root (LMR) through the anterolateral versus anteromedial portal and (2) establish "safe" and "danger" zones to reduce the possibility of injuries to posterior neurovascular structures when performing lateral meniscal repair in relation to the lateral border of the posterior LMR. Study Design: Descriptive laboratory study. Methods: Using 29 axial MRI scans of knees in the figure-of-4 position with joint fluid dilatation at the level of the lateral meniscus, direct lines were drawn to simulate a straight all-inside meniscal repair device deployed from the anterolateral and anteromedial portals to the lateral border of the posterior LMR, extending 14 mm beyond the joint capsule. If the line passed through or touched a posterior neurovascular structure, a risk of iatrogenic injuries was noted, and measurements were made to determine the safe zone in relation to the lateral border of the posterior LMR. Results: Repairing the lateral meniscus through the anterolateral portal in relation to the lateral border of the posterior LMR resulted in a significantly greater risk of posterior neurovascular injuries compared with repairing through the anteromedial portal, with injury incidences of 68.97% and 10.35%, respectively (P = .001). The safe zones of lateral meniscal repair through the anterolateral and anteromedial portals were 4.15 ± 1.87 and 6.57 ± 0.98 mm, respectively, beyond the lateral border of the posterior LMR. Conclusion: The risk of posterior neurovascular injuries when repairing posterior lateral meniscal tissue was found to be significantly greater through the anterolateral portal compared with the anteromedial portal. Clinical Relevance: Surgeons can use the safe zones as defined in this study to decrease the risk of iatrogenic posterior neurovascular injuries during arthroscopic lateral meniscal repair.

Appropriate intradeltoid muscle needle penetration depth in vaccine administration: an MRI study in Thailand.

Objective: The objective of this study was to evaluate the appropriate vaccination needle penetration depth into the deltoid muscle to avoid injection-site complications from an inappropriate injection depth and/or injection site in the Thai population. Methods: This was a retrospective study using axial proton density-weighted images of MRI shoulders at the level of 2 fingerbreadths below the acromion process to measure the combined thickness of the skin, subcutaneous fat pad and deltoid muscle to evaluate the percentage of injections into the deltoid muscle with various needle penetration depths. Results: There were 509 MRI shoulder images of 222 males and 287 females (265 right shoulders and 244 left shoulders). The average body mass index and age were 24.54 ± 3.54 kg/m2 and 64.81 ± 10.20 years, respectively. Using a needle penetration depth of 12.7 mm (0.5 inches) achieved 100% of injections into the deltoid muscle. Conclusion: We recommend advancing the entire length of a 0.5-inch needle perpendicular to the skin at 2 fingerbreadths below the acromion process for adult intradeltoid vaccinations. This approach ensures optimal vaccine delivery and minimizes the risk of injection-related injuries.

Efficacy and Safety of Antibiotic Impregnated Microporous Nanohydroxyapatite Beads for Chronic Osteomyelitis Treatment: A Multicenter, Open-Label, Prospective Cohort Study.

Chronic osteomyelitis is still a serious health problem that causes disabling conditions and has an impact on the quality of life. The objective of this study was to determine the clinical efficacy and safety of localized antibiotics delivery via impregnated microporous nanohydroxyapatite (nHA-ATB) beads for chronic osteomyelitis treatment. A total of 62 patients were enrolled in this study. After radical surgical debridement, the bone defect was filled with three types of antibiotics (vancomycin or gentamicin or fosfomycin) impregnated HA beads. The follow-up period was 48 weeks. It was found that the success rate was approximately 98% with a re-infection in only one patient. Quality of life of all patients after treatment improved significantly over time. Systemic exposure to vancomycin and gentamicin after beads implantation was limited and high local antibiotics concentrations were found in wound drainage fluid at 24, 48 and 72 h. Blood biochemistry measurements did not show any nephrotoxic or hepatotoxic effects. 20 adverse events were reported, but 90% of the events were resolved without having to remove the beads and the patients recovered. Satisfactory outcomes were observed in terms of success rate, quality of life and adverse effect. nHA-ATB beads impregnated by vancomycin or gentamicin or fosfomycin could potentially be employed as an alternative product of choice for localized antibiotics delivery in chronic osteomyelitis treatment.

Effectiveness of surgical interventions for treating de Quervain's disease: A systematic review and meta-analysis.

Introduction: This systematic review of randomized controlled trials was undertaken to assess whether any of the various currently used surgical interventions have better functional outcomes and less impairment or fewer surgical complications compared to the other common surgical interventions in de Quervain's disease. Material and methods: Relevant studies related to surgical interventions in de Quervain's disease based on the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) reporting guidelines were identified from PubMed, Embase, Web of Science, and the Cochrane Central Register of Controlled Trials for randomized controlled trials comparing surgical interventions in de Quervain's disease published from January 2000 to December 2020. Functional outcome and impairment were the primary outcomes assessed. Results: Three trials met the eligibility criteria which were following randomized controlled trial or quasi-experimental trial enrolling adults ≥18 years of age diagnosed with de Quervain's disease, comparing clinical outcomes between different surgical interventions, and including functional outcomes, impairment, pain and complications data. The Cochrane Risk of Bias Assessment Tool and GRADE approach were used to ascertain methodological quality. Statistical heterogeneity was tested with I-square and chi-square tests. The longitudinal skin incision probably slightly reduced superficial radial nerve injury, vein injury, scar hypertrophy, and total complications compared with the transverse skin incision with relative risk: 0.14, very low certainty by GRADE; 0.10, very low certainty by GRADE; 0.57, very low certainty by GRADE; and 0.23, very low certainty by GRADE, respectively. Conclusion: Concerning the analysis of functional and pain scores, no significant results were able to be concluded. This study's findings must be considered in the light of quality and sample size limitations, and further high quality prospective randomized controlled clinical trials are needed to draw more firm conclusions.

Septic arthritis of shoulder joint following a COVID-19 vaccination: A case report.

Introduction: Septic arthritis of the shoulder joint is a serious condition which requires early diagnosis and treatment. This condition usually presents with shoulder pain, limited range of motion and/or fever, and is diagnosed by shoulder arthrocentesis with significant synovial fluid leukocytosis or positive synovial fluid gram stain or culture. There are some risk factors for septic arthritis, notably bacteremia, pre-existing joint pathology and an immunocompromised host such as poorly controlled type II diabetes mellitus. Case presentation: A 45-year-old Thai female developed left shoulder septic arthritis after an Astra-Zeneca COVID-19 vaccine administration. The clinical symptoms were left shoulder pain, limited range of motion and fever. The probable risk factors were underlying diabetes mellitus type II and vaccine administration technique. The joint fluid culture showed Staphylococcus aureus. This patient was treated with combined arthroscopic debridement and an intravenous antibiotic for 1 week which was then switched to an oral antibiotic for 5 weeks. Her clinical symptoms gradually improved over the 2 weeks following the initiation of treatment. Conclusion: Septic arthritis is a rare complication after a vaccination. Doctors should be especially careful with immunocompromised patients, and always use a correct injection technique.