Extra-articular Pathology Research Articles

Role of ultrasound and magnetic resonance imaging in the assessment of painful ankle joint

Background Ankle pain may originate from several intra-articular as well as extra-articular pathologies and can be triggered by a traumatic or nontraumatic incident. Aim The purpose of this work was to evaluate the diagnostic accuracy of musculoskeletal ultrasound (US) about MRI in the evaluation of ankle joint pain. Patients and methods This prospective cross-sectional work was performed on 40 patients with clinical criteria of ankle pain (acute and chronic, traumatic and nontraumatic). All participants were subjected to US and MRI. Results Chronic left-sided nontraumatic ankle lesions were the most prevalent among our cases. The specificity, sensitivity, negative predictive value, positive predictive value, and accuracy of US (about MRI) to diagnose tendon disorders were (all) 100%, for Haglund deformity were (all) 50%, for tibiofibular ligament pathology, bone marrow edema, osteochondral defect of the talar dome and medullary aneurysmal bone cyst were (all) 0%, for anterior talofibular ligament pathology were 84.4, 100, 100, 93.1, and 95%, respectively, for joint effusion were 91, 100, 100, 70, and 93%, respectively, and for bone lesions were 18, 100, 100, 50, and 55%, respectively. Conclusions US and MRI are used for imaging evaluation of patients with ankle pain. US can be used as primary imaging investigation. MRI may be used to confirm the findings of US. However, it should be used as the first imaging modality in patients with marrow abnormality or deep-seated pathologies.

Air arthrography: a safe technique for intra-articular hip injections.

Diagnosing the specific causes of young adult hip pain remains challenging due to non-specific symptoms. Fluoroscopy-guided injections are useful for confirming intra-articular hip pain and differentiating it from extra-articular pathology. When performing injections, accurate needle placement into the hip joint is critical. Traditionally, a contrast agent is used to confirm intra-articular positioning. Air arthrograms are an alternative technique that avoids adverse reactions to contrast, which may compromise interpretation of results, as well as being more cost-effective. This study presents the air arthrography technique for intra-articular hip injections, and assesses outcomes and complications in a consecutive patient cohort. A retrospective review was performed on patients who underwent an air arthrography guided intra-articular hip injection at a single institution between April 2019 and September 2022. We identified 352 hips in 294 patients. Patient records were evaluated for complications from the injection or any subsequent hip surgery. Mean age at time of injection was 38 years (±14.7 SD) for 216 females and 78 males. Mean follow-up time post injection was 138 days (IQR = 46-186). Results showed a 2.56% complication rate, primarily attributed to steroid flares, all of which resolved without further intervention. 102 patients proceeded to subsequent hip surgery; the mean time from injection to procedure was 341 days (IQR = 194-456) and the mean follow-up post subsequent procedure was 346 days (IQR = 87-531). There were no infective complications following the injections or any subsequent procedures. This is the first study that evaluates longer-term patient outcomes following air arthrography guided injections with or without subsequent surgery. Our results demonstrate that the use of air arthrograms is a reliable, safe, and cost-effective method for intra-articular hip injections, without the additional risks posed by contrast media.

Revision Hip Arthroscopy: Getting It Right the Second Time

Revision Hip Arthroscopy: Getting It Right the Second Time

Managing the Hip in Supraphysiologic Motion Athletes

Managing the Hip in Supraphysiologic Motion Athletes

A New Clinical Examination Algorithm to Prescribe Conservative Treatment in People with Hip-Related Pain.

Hip-related pain is a common issue in active adults affecting their quality of life, mobility, and overall function, and it can lead to persistent disability. However, diagnosing hip-related pain is challenging due to the many potential sources and causes, including intra-articular and extra-articular pathology, and referred pain from other areas (lumbar or groin related pain). To address this, there is a need for a clinical algorithm based on the best available evidence and expert consensus. This algorithm could guide healthcare professionals in assessing and managing patients with hip-related pain, during the diagnosis, test selection, intervention, monitoring, and promoting collaboration among various healthcare providers. This clinical algorithm for hip-related pain is a comprehensive, flexible, adaptable to different settings, and regularly updated to incorporate new research findings. This literature review aims to establish a clinical algorithm specifically for prescribing exercise treatment to patients with hip-related pain, addressing their individual needs and enhancing their overall care.

In vivo interrelationships between the gluteus minimus and hip joint capsule in the hip internal rotation position with flexion

BackgroundThe flexion adduction internal rotation (FADIR) test is performed by the combined motions of hip flexion (with knee flexion), adduction, and internal rotation, and can often reproduce anterior hip pain consistent with an individual’s presenting pain. Since it has high sensitivity for intraarticular pathology diagnosis but low specificity, understanding the extraarticular pathology that can induce anterior hip pain in the FADIR test may also be essential. This study hypothesized that the interrelationships between the joint capsule and gluteus minimus differ in individuals with and without FADIR-positive pain and aimed to elucidate the in vivo interrelationships at hip internal rotation in 90°-flexion, which is also often restricted in individuals with FADIR-positive pain.MethodsTen hips were included in the FADIR-positive group, and ten hips without hip pain in the FADIR test were included in a control group. Based on the ultrasound images at the four hip rotation conditions (20° and 10° external rotations, 0° external/internal rotation, and 10° internal rotation), orientation measurements of the gluteus minimus (muscle belly portion) and joint capsule were performed and quantitatively compared between the FADIR-positive and control groups. Additionally, 3 hips of 3 participants were randomly selected from each of the control and FADIR-positive groups for magnetic resonance imaging analysis.ResultsAt 0°-external/internal and 10°-internal rotation, on ultrasound images, fibers of the gluteus minimus and joint capsule in the FADIR-positive group were significantly more oriented in the same direction than those in the control group. Magnetic resonance imaging showed that the loose connective tissue between the gluteus minimus and joint capsule was prominent at 10°-internal rotation in the control group, although this was not apparent in the FADIR-positive group.ConclusionsAt hip internal rotation in 90° flexion, the muscular belly portion of the gluteus minimus and joint capsule were oriented in the same direction to a greater extent in the FADIR-positive group than in the control group owing to a morphological change in the loose connective tissue between them. The pathological changes in the loose connective tissue may inhibit smooth movement of the gluteus minimus relative to the joint capsule in individuals with FADIR-positive pain.

Peripheral blood lymphocytes apoptosis role in rheumatoid arthritis progressing

Rheumatoid arthritis (RA) is an autoimmune, chronic, and genetically linked inflammatory lesion of joint tissues that is accompanied by extra-articular systemic pathologies. The disease progression leads to joints immobilization, and eventually, the patient's disability occurs approximately ten years from the first clinical manifestation. RA pathogenesis involves various mechanisms: specific joint-related damage, nonspecific adaptive, and vessel-related pathological changes. Our research aimed to study the role of peripheral blood lymphocyte apoptosis in RA pathogenesis. We have analyzed research data from Google Scholar, PubMed, Web of Science, and Scopus databases to investigate the role of lymphocyte apoptosis in RA progression. Clinical manifestations in RA are caused by autoreactive T- and B-lymphocyte activity supported by humoral and cellular immune factors activity. Disease pathogenesis is caused by an imbalance in the process of programmed cell death (apoptosis): a proportion of immune cells are rapidly destroyed. In contrast, apoptosis is inhibited in the other classes of immune cells. High infiltration of the joint by autoreactive sensitized lymphocytes worsens the patient's condition. Apoptosis inhibition is especially noticeable in the early stages of RA and correlates with the concentration of the anti-apoptotic molecule Bcl-2 in the synovia. Activating the apoptotic destruction of lymphocytes (by drug action) allows a positive therapeutic effect and sustained remission. However, it should be noted that genetic factors play a significant role in the onset, progression and drug response of RA. In addition, environmental and behavioral factors can activate RA progression and influence treatment efficacy.

The Role of Ultrasonography in Hip Impingement Syndromes: A Narrative Review.

Hip pain is indubitably a frequent clinical problem deriving from copious etiologies. Hip impingement syndromes are one of the most prevalent causes of persistent groin pain, especially in young and active patients. Diligent imaging of the hip region is indispensable to discern femoroacetabular impingement, as the differential diagnosis of hip pain can be exceedingly arduous. Despite hip radiography being plain and broadly attainable, it offers narrow information concerning soft tissue pathologies around the hip joint (extra-articular hip impingement syndromes). Magnetic resonance imaging and arthrography remain the gold standard examination for detecting intra-articular pathologies; however, they are widely considered expensive, time-consuming and characterized by confined. Consequently, ultrasonography has emerged as an alternative valuable diagnostic tool for distinguishing the underlying abnormalities that trigger femoroacetabular impingement. Proper hip ultrasound examination provides dynamic assessment, while also beneficial for guided intervention around the hip joint. Ultrasound hip examination is exacting due to its complex regional anatomy and deep location. It is capable of providing detailed information about various hip quadrants. An adept operator can identify both intra-articular and extra-articular pathologies. In addition, with ultrasonography, hip injections have been rendered relatively undemanding, aiding in therapeutic and diagnostic purposes. This paper aims to provide a succinct and compendious review of the existing literature, accentuating the crucial role of ultrasonography in diagnosing hip impingement syndromes and determining whether an additional examination is required regarding distinguishing between intra-articular and extra-articular syndromes.

Paper 14: Is the Use of a Postoperative Hip Orthosis Beneficial Following Routine Arthroscopy of the Hip? A Retrospective Cohort Study

Objectives: Treatment of intra- and extra-articular pathologies of the hip via arthroscopy continues to gain popularity. To date, the impact of routinely bracing patients postoperatively on patient reported outcome measures (PROMs) and re-operation rate has not been elucidated. The purpose of this study is to determine if there is a difference in PROMs and re-operation rate for patients who were braced versus those who were not braced following routine hip arthroscopy. Methods: This was a retrospective review of 193 patients who underwent hip arthroscopy from 2018 to 2021 by two orthopedic surgeons at a single institution. 101 patients prior to July 1, 2019 were immobilized in a hip orthosis following hip arthroscopy whereas 92 patients after July 1, 2019 were not. Baseline patient reported outcomes in the form of visual analog pain scale (VAS), modified Harris Hip Score (M-HHS), single assessment numeric evaluation (SANE) hip scores, VR-12 physical score, VR-12 mental score were obtained for all patients in both cohorts and postoperatively repeated at two weeks, four weeks, three months, six months, one year, and two years. Additionally, results were stratified by gender to assess gender-based difference. The groups were then compared to evaluate for a difference in PROMs over time. T-tests or Wilcoxon ranked-sum were utilized to compare these groups depending on normality of the data. Comparisons of categorical demographics such as age and gender between bracing groups were assessed using chi-squared tests. Re-operation rate was compared between the two groups using the Fischer Exact Test. Statistical significance was set at p<0.05 for all analyses. Results: After analyzing a cohort of patients who were braced and a cohort who were not braced postoperatively, no significant difference (p>.05) in PROMs at two weeks, four weeks, three months, one year or two years was detected for VAS, mHHS, SANE, VR-12 Physical and VR-12 Mental. No significant difference in reoperation rate was detected for the braced vs the non-braced cohort (p=.105). Demographics were not significantly different regarding gender distribution (p=0.418) and age (p=0.087) between groups. Conclusions: The findings above suggest the use of an orthosis after routine hip arthroscopy does not improve patient reported outcomes or alter the reoperation rate. Postoperative bracing increases perioperative cost and by foregoing routine bracing, patients may avoid associated morbidity that can come with wearing a brace for a prolonged period of time. The results of this project will help to guide clinical decision making as it pertains to whether to use a postoperative hip orthosis following routine hip arthroscopy.

Imaging Diagnosis, Prevalence, and Clinical Outcomes of Arthroscopic Surgery for Anterior Inferior Iliac Spine Impingement: A Systematic Review and Meta-analysis.

Subspine impingement, or anterior inferior iliac spine (AIIS) impingement, is a type of extra-articular pathology associated with femoroacetabular impingement syndrome and often requires subsequent arthroscopic surgery. To examine the diagnostic accuracy, prevalence, and clinical outcomes of arthroscopic treatment for AIIS impingement. Systematic review; Level of evidence, 4. The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) 2020 checklist was applied. We searched for studies on the prevalence, diagnostic accuracy, and results of surgical treatment for AIIS impingement. For each included study, data synthesis and statistical analysis were performed to identify pooled prevalence, calculate clinical outcome scores, and estimate adverse events. The QUADAS (a quality assessment tool for diagnostic accuracy studies) was used to assess the quality of the diagnostic accuracy studies, and the Risk of Bias Assessment tool for Nonrandomized Studies was used to assess the quality of the studies on arthroscopic treatment efficacy. Out of an initial 791 studies, 23 were included. AIIS impingement was diagnosed by plain radiography with 76% to 86% sensitivity, 3-dimensional computed tomography with 80% to 81.8% sensitivity, magnetic resonance imaging with 80% sensitivity, and ultrasound with 92.5% sensitivity. For patients who underwent hip arthroscopy, the pooled prevalence of AIIS impingement was 18%. Significant improvement between pre- and postoperative clinical outcomes was observed: 25.75 points for the modified Harris hip score (mHHS), 46.88 points for the Hip Outcome Score-Sport subscale, 20.85 points for the Nonarthritic Hip Score, and -2.92 points for the pain visual analog scale. The minimal clinically important difference on the mHHS was exceeded by 94% of patients. The pooled incidence of surgical complications was 1%. Of 6 included studies on diagnostic accuracy, 2 were identified as having a low risk of bias, and 4 included >2 factors with a high risk of bias. All 9 included studies on treatment outcomes had at least 1 factor with a high risk of bias. Several imaging modalities assist in the diagnosis of AIIS impingement. The overall prevalence of AIIS impingement in patients that underwent hip arthroscopy was 18%. Clinical outcomes after arthroscopic AIIS decompression were generally favorable, with a relatively low rate of surgical complications.

Extra-articular findings in patients with suspected labral tear and value of screening pelvis sequence

Objectives: There are multiple etiologies of hip pain, of which labral tear is one of the most common in young adults which may be difficult to distinguish on history and clinical examination. Labral tears can be diagnosed using high-resolution non-contrast magnetic resonance imaging (MRI) or MR arthrogram that involves imaging the concerned hip. At our institute, we perform an additional proton density fat saturated axial sequence of the pelvis to screen for alternative pathology and we investigate the value of this in this study. Material and Methods: A retrospective review of high-resolution non-arthrographic 3T MR of hips that were referred from young adult hip services with a history of hip or groin pain and the clinical suspicion of a labral tear over 2 years was performed. Those <50 years were included in the study. Results: Of 648 patients with suspected labral tears, 18% showed evidence of extra-articular hip pathologies (sacroiliac joint pathology, iliopsoas pathology, and ischiofemoral impingement) on MRI. This study has shown that approximately one in five patients with a clinically suspected labral tear showed radiological evidence of extra-articular hip pathology (sacroiliac joint pathology, iliopsoas pathology, ischiofemoral impingement, and hamstring pathology). There is therefore the potential for misdiagnosis and increased morbidity if these alternative diagnoses were not appreciated. Conclusion: A high-resolution hip MRI protocol for suspected labral tears of the hip joint should include at least one sequence of the entire pelvis to evaluate for extra-articular findings.

Anterior cruciate ligament rupture and associated Segond fracture: Incidence and effect on associated ligamentous and meniscal injuries

IntroductionThe Segond fracture is an avulsion fracture of the lateral tibial plateau and is widely considered to be pathognomonic of anterior cruciate ligament (ACL) rupture. In addition to ACL rupture, Segond fractures have also been noted to be associated with significant intra-articular pathology such as meniscal injuries as well as extra-articular pathology such as collateral ligament injuries. This is likely due to the fact that the presence of a Segond fracture may represent increased rotatory instability. Whilst several studies have demonstrated the association of a Segond fracture with significant intra-articular pathology, there is a paucity of literature assessing if the combination of an ACL rupture and Segond fracture gives rise to higher rates of concomitant ligamentous and meniscal injuries. The primary objective of this study is to determine if patients with ACL ruptures associated with Segond fractures have higher rates of concomitant ligamentous and meniscal injury, when compared to patients with ACL ruptures without a Segond fracture.MethodsA retrospective review of all patients who underwent ACL reconstruction in a single institution between 2014 to 2018 was conducted. A review of the patients’ demographics, operative notes, and radiographs was performed. X-rays and MRI scans were double-read by a board-certified radiologist and Orthopaedic surgeon.ResultsA total of 414 subjects were included. The incidence of Segond fracture was 2.4%. The mean age was 24.7±7.4 (range 16 to 60) years and 26.7±7.6 (range 16 to 38) years in patients with and without Segond fractures respectively. 89.9% of patients suffered a non-contact mechanism of injury, with sports injuries being most common (79.5%). There was a significantly higher rate of isolated lateral meniscus tears in patients with Segond fractures compared to those without (50% v.s. 20.8%) based on pre-operative MRI. (p<0.05) There were no other significant differences in associated ligamentous injuries.ConclusionThe incidence of Segond fracture associated with ACL rupture is 2.4%. There is a significantly higher risk of a concomitant isolated lateral meniscus tear in ACL ruptures associated with a Segond fracture. There is no significantly higher risk of concomitant ligamentous injuries in ACL ruptures associated with a Segond fracture.

The Short-term Outcomes of Physiotherapy for Patients with Acetabular Labral Tears: An Analysis according to Severity of Injury in Magnetic Resonance Imaging.

PurposeThe aim of this study was to evaluate the short-term outcome of physiotherapy in patients with acetabular labral tears and to assess the effectiveness of physiotherapy according to the severity of the labral tear.Materials and MethodsThirty-five patients who underwent physiotherapy for treatment of symptomatic acetabular labral tears were enrolled. We evaluated the severity of the acetabular labral tears, which were classified based on the Czerny classification system using 3-T MRI. Clinical findings of microinstability and extra-articular pathologies of the hip joint were also examined. The International Hip Outcome Tool 12 (iHOT12) was use for evaluation of outcome scores pre- and post-intervention.ResultsThe mean iHOT12 score showed significant improvement from 44.0 to 73.6 in 4.7 months. Compared with pre-intervention scores, significantly higher post-intervention iHOT12 scores were observed for Czerny stages I and II tears (all P<0.01). However, no significant difference was observed between pre-intervention and post-intervention iHOT12 scores for stage III tears (P=0.061). In addition, seven patients (20.0%) had positive microinstability findings and 22 patients (62.9%) had findings of extra-articular pathologies. Of the 35 patients, eight patients (22.9%) underwent surgical treatment after failure of conservative management; four of these patients had Czerny stage III tears.ConclusionThe iHOT12 score of patients with acetabular labral tears was significantly improved by physiotherapy in the short-term period. Improvement of the clinical score by physiotherapy may be poor in patients with severe acetabular labral tears. Determining the severity of acetabular labral tears can be useful in determining treatment strategies.

Arthroscopic Ischial Tuberoplasty: Treatment of Ischiofemoral Impingement

Background: Ischiofemoral impingement is a rare but increasingly recognized as a source of hip pain. Its etiology is often multifactorial and can be due to congenital, iatrogenic, or extra-articular pathology. Prior literature has described lesser trochanter osteoplasty and iliopsoas release for the treatment of ischiofemoral impingement, but postoperative hip flexor weakness has been noted with this technique. We present a novel technique for the treatment of ischiofemoral impingement, with resection of the ischial tuberosity. Indications: Patients with ischiofemoral impingement that remain symptomatic despite nonsurgical management, or patients with persistent gait abnormalities, are considered for surgery. Technique Description: In the prone position, direct posterior and posterolateral arthroscopic portals are created in the gluteal fold. The posterior femoral cutaneous and sciatic nerve are identified. Fluoroscopy is used to identify the region of impingement on the ischial tuberosity and the overlying hamstring tendon is elevated off the tuberosity. An arthroscopic burr is used to resect the tuberosity. Fluoroscopy is utilized to confirm adequate resection. This is combined with a dynamic examination under direct arthroscopic visualization with the hip in an extended, adducted, and externally rotated position. To repair the hamstring tendon, 2 double-loaded anchors are placed into the ischium, the sutures of which are used to repair the hamstring tendons using a horizontal mattress configuration. Patients undergo a stepwise postoperative physical therapy protocol, followed by a functional testing profile prior to return to competitive sport. Results: Significant improvements in patient-reported outcomes have been reported following treatment of ischiofemoral impingement, with some studies reporting Hip Outcome Score—Activities of Daily Living (HOS-ADL) &gt;90 at 2 years postoperatively. Athletes have been able to return to sport at a mean 5.6 months after surgery. Large studies have yet to report on outcomes compared with nonsurgical or open techniques. Discussion/Conclusion: Recent advancements in endoscopic techniques have allowed for adequate visualization and release of ischiofemoral impingement. We present our endoscopic technique of ischial tuberoplasty, which, compared to lesser trochanter osteoplasty and iliopsoas release, may reduce the incidence of postoperative hip flexor weakness.

Evaluation and Management of a Painful Knee After Total Knee Arthroplasty.

Pain after total knee arthroplasty (TKA) is not infrequent and may be indicative of a broad spectrum of prosthesis-related, intra-articular, or extra-articular pathologies. To diagnose and treat the underlying cause of a painful TKA, systematic evaluation of the patient is critical to ensure that they are managed appropriately and expeditiously. This evidence-based review presents current concepts regarding the pathophysiology, etiology, and diagnosis of painful TKA and our recommended approach for management. [Orthopedics. 2021;44(6):341-352.].

Ураження суглобів при ANCA-асоційованих системних васкулітах Повідомлення І. Мікроскопічний поліангіїт

Артикулярний синдром є однією з основних ознак мікроскопічного поліангіїту (МПА), на частку якого в деяких регіонах земної кулі припадає понад 90 % усіх системних васкулітів (СВ), що пов’язані з антинейтрофільними цитоплазматичними антитілами (ANCA). Було встановлено, що за 5 років після дебюту МПА починають формуватися прогресуюче зменшення параартикулярної (епіфізарної) мінеральної щільності кістки й деструкція суглобів. Дуже багато питань, пов’язаних із характером перебігу суглобової патології при окремих ANCA-CB, вимагають подальшого вивчення. Мета: оцінити ураження суглобів у хворих на МПА та взаємозв’язки з екстраартикулярною патологією. Матеріал і методи. Під спостереженням перебували 89 хворих на МПА віком 18–78 років, серед яких було 44 % чоловіків і 56 % жінок. Тривалість хвороби від перших ознак її маніфестації становила 7 років. Гострий або підгострий перебіг МПА встановлено в 27 % випадків, у решти — хронічний; І ступінь активності патологічного процесу констатовано в 10 % спостережень, ІІ — в 32 %, ІІІ — в 58 %. Результати. Ураження суглобів спостерігається в 60 % від числа хворих на МПА, що у 40 % випадків перебігає у вигляді олігоартриту, залежить від наявності патології скелетних м’язів, пневмопатії і периферійної нейропатії. Клінічні, рентгенологічні та сонографічні ознаки артикулярної патології при МПА значно пов’язані з віком пацієнтів, тривалістю захворювання, ураженням серця, нирок і шкіри. У патогенетичних побудовах артропатії у хворих на МПА беруть участь С-реактивний протеїн (CRP) та циркулюючі імунні комплекси (CIC), а слабке значення має характер ANCA (антитіла до мієлопероксидази і протеїнази-3), при цьому певну прогнознегативну значущість щодо тяжкості суглобової патології мають високі параметри в крові ревматоїдного фактора (RF). Висновок. Прогнознегативними критеріями щодо розвитку патології суглобів у хворих на МПА є показники в крові: CRP &gt; 20 мг/л і CIC &gt; 130 ум.од., а значення RF &gt; 60 МО/мл вважаються чинниками ризику тяжкого перебігу артропатії.

Cell-based therapy of the elbow: evidence for lateral tendinopathy-a review on current treatments.

Cell-based therapies are on the rise in treating intra and extraarticular pathologies, trying to avoid surgical intervention and support local repair processes. Therefore, the aim was to summarize current evidence-based treatment options for a cell-based therapy around the elbow. Through a literature review up-to date treatment algorithms and therapies have been identified and have been rated according to their evidence level for clinical recommendation. Regarding the four extraarticular anatomical regions of the elbow (anterior, medial, posterior and lateral) and the joint itself, the lateral elbow and its´ tendinopathies as well as the use of cell-based treatment options have been extensively studied and, therefore, allow for clear and evidence-based recommendations. The remaining three regions as wells as the intraarticular application do not show enough evidence for a clinical recommendation. In conclusion the cell-based approach for treating elbow pathologies can only be recommended for the lateral elbow, as there has been shown sufficient evidence for the extraarticular application. It has to be mentioned, that the results from the lateral elbow maybe transferred to other extra-articular tendinopathies, as the lack of evidence may be due to the rare appearance of posterior, medial and anterior tendon affection. No recommendation can be given for intra-articular use. IV.

Surgical hip dislocation for treatment of synovial chondromatosis of the hip.

In the present study, we aimed to evaluate the clinical outcomes of surgical hip dislocation in patients with synovial chondromatosis (SC) of the hip. Seven patients with primary SC of the hip treated with open synovectomy and removal of loose bodies by surgical hip dislocation from 2016 to 2019 were retrospectively reviewed. All patients had numerous and widespread loose bodies based on pre-operative images, including routine radiographs, CT, and MRI. The visual analog scale (VAS) score and Harris hip score (HHS) were collected and analyzed before and after surgery. The post-operative radiographs were reviewed to evaluate disease recurrence and osteoarthritis progression. The mean operative time was 61 minutes(range, 42-75min). An average of 33 loose bodies in each patient (range, 16-67) was removed, and extra-articular pathology was found in one patient. Patients were followed up for a mean duration of 30months (range, 18-42months). The average VAS scores were decreased from 3.7 (range, 2-6) pre-operatively to 0.9 (range, 0-2) at the last follow-up, and the HHS was improved from 60.1 (range, 50-73) to 90.1 (range, 82-95). All results demonstrated significant improvements (P < 0.05). Post-operative radiographs showed no recurrence, osteoarthritis progression, or osteonecrosis of the femoral head in all hips. Surgical hip dislocation was a practical approach for managing both intra-articular and extra-articular pathologic lesions around the hip. It was an effective treatment for SC of the hip with short surgical time, good joint functions, a lower recurrence rate, and few complications.

Persistent Pain After Operative Treatment for Chronic Lateral Ankle Instability.

A high frequency of associated injuries is seen in patients with chronic lateral ankle instability. Comorbidities include intraarticular pathologies (osteochondral lesion, soft tissue or bony impingement syndrome, loose body, synovitis, etc.), peroneal tendon pathologies, neural injuries, and other extraarticular pathologies. Surgeons should have a high index of suspicion for these associated pathologies before operative intervention, correlate with clinical findings, and plan the treatment. Despite the restoration of ankle stability following ligament repair or reconstruction surgery, postoperative residual pain, which can negatively affect clinical outcomes and patient satisfaction, is highly prevalent (13–35%). The aim of this review was to discuss the causes of persistent pain after operative treatment for chronic lateral ankle instability.

Capsule-Preserving Approach to Arthroscopic Decompression of the Anterior Inferior Iliac Spine

Hip arthroscopy techniques have evolved to treat a wide range of extra-articular pathologies. Subspine impingement commonly occurs in femoroacetabular impingement, particularly in athletes with a high range of motion, patients with low degrees of femoral version, and those with large subspine deformities. A reliable technique that preserves the hip capsule would be helpful for hip arthroscopy surgeons. This note details our technique using pericapsular windows proximal to the interportal capsulotomy to access and decompress a subspine deformity in the setting of hip femoroacetabular impingement.