External Snapping Hip Syndrome Research Articles

Clinical Outcomes Following Incomplete Arthroscopic Iliotibial Band Release for External Snapping Hip Syndrome: An Observational Study.

Arthroscopic treatment is indicated for external snapping hip (ESH) syndrome in patients refractory to conservative treatment, but snapping does not disappear completely in some case. No previous studies have described the clinical course of ESH syndrome in patients who presented with persistent snapping after an arthroscopic procedure. We demonstrated the clinical outcomes following an incomplete arthroscopic iliotibial band (ITB) release for ESH syndrome. This retrospective observational study was performed at two teaching hospitals between October 2015 and December 2021. We reviewed the data of 33 patients (34 hips) aged ≥18 years, diagnosed with ESH syndrome, who were treated with arthroscopic ITB release. Patients who presented with persistent snapping despite sufficient arthroscopic ITB release following systematic order were defined as having an incomplete release. We collected the data for recurrent symptomatic snapping hip as the primary outcome after a minimum 2-year follow-up. The visual analogue scale (VAS) and modified Harris hip (mHHS) scores were measured as secondary outcome. "Incomplete release" was identified in three of the 34 hips (8.9%). Cases of recurrent symptomatic snapping or conversion to open surgery were not observed. The symptoms of residual snapping spontaneously disappeared in all cases following routine postoperative rehabilitation within a 3-month follow-up period. The VAS (4 ± 1) and mHHS (17 ± 6) scores of all the patients improved. When refractory ESH syndrome is identified during arthroscopic surgery, appropriate ITB release and removal of the major lesion causing snapping are expected to lead to resolution of residual symptoms without conversion to open surgery.

Endoscopic gluteus maximus tendon release for external snapping hip syndrome: a functional assessment

PurposeThe aim of this retrospective study was to investigate the clinical follow-up of patients with external snapping hip syndrome (ESHS) treated with endoscopic gluteus maximus tendon release and to compare the residual muscular strength and thigh circumference as an indirect outcome measure.MethodsPatients of all ages with external snapping hip syndrome were treated with endoscopic gluteus maximus tendon release. Outcome measures evaluated included: visual analog scale (VAS), modified Harris Hip Score (mHHS), and Non-Arthritic Hip Score (NAHS). The gluteus maximus strength and the circumference of the thigh were also evaluated.ResultsAmong 25 patients, 23 fulfilled the inclusion criteria and one patient was lost to follow-up. The series included 22 patients, 6 males and 16 females with a mean age of 27.9 ± 13.4 years (range 16–76 years). All patients had resolution of the snapping symptoms after the procedure. The mean follow-up was 18 ± 9.3 months. All outcomes improved in a statistically significant manner: VAS value decreased from 6.8 (range 6–8) to 0.6 (range 0–4) (p < 0.001), mHHS increased from 48.6 (range 17.6–67) to 88.2 (range 67–94.6) (p < 0.001), NAHS increased from 49.0 (range 21.5–66) to 90.8 (range 66–98.75) (p < 0.001). A statistically significant reduction of operated limb thigh circumference compared to the contralateral side (3.7%) was also found, while there were no statistical differences regarding the strength of gluteus maximus muscles.ConclusionsEndoscopic gluteus maximus tendon release is an excellent surgical option to treat snapping hip syndrome. The evaluated muscle strength revealed no functional impairment. The significance of the limb circumference reduction has yet to be determined.Level of evidenceIV: retrospective comparative trial.

External snapping hip syndrome is associated with an increased femoral offset

BackgroundExternal snapping hip syndrome (ESH) is postulated to be one of the causes of greater trochanteric pain syndrome, which also includes greater trochanteric bursitis and tendinopathy or tears of the hip abductor mechanism. However, it was not yet described what kind of bony morphology can cause the snapping and whether symptomatic and asymptomatic individuals have different imaging features.PurposeIt was the purpose of this study to look for predisposing morphological factors for ESH and to differentiate between painful and asymptomatic snapping.MethodsA consecutive cohort with ESH and available magnetic resonance imaging (MRI) between 2014 and 2019 was identified. The control group consisted of patients that underwent corrective osteotomies around the knee for mechanical axis correction and never complained of hip symptoms nor had undergone previous hip procedures. The following parameters were blindly assessed for determination of risk factors for ESH: CCD (corpus collum diaphysis) angle; femoral and global offset; femoral antetorsion; functional femoral antetorsion; translation of the greater trochanter (GT); posterior tilt of the GT; pelvic width/anterior pelvic length; intertrochanteric width. Hip and pelvic offset indexes were calculated as ratios of femoral/global offset and intertrochanteric/pelvic width, respectively. For the comparison of symptomatic and asymptomatic snapping, the following soft-tissue signs were investigated: presence of trochanteric bursitis or gluteal tendinopathy; presence of surface bony irregularities on trochanter major and ITB (Iliotibial band) thickness.ResultsA total of 31 hips with ESH were identified. The control group (n = 29) consisted of patients matched on both age (± 1) and gender. Multiple regression analysis determined an increased hip offset index to be independent predictor of ESH (r = + 0.283, p = 0.025), most likely due to the higher femoral offset in the ESH group (p = 0.031). Pearson correlation analysis could not identify any significant secondary factors. No differences were found between painful and asymptomatic snapping on MRI.ConclusionsA high hip offset index was found as an independent predictor for external snapping hip in our cohort, mainly due to increased femoral offset. No imaging soft-tissue related differences could be outlined between symptomatic and asymptomatic external snapping.Level of evidence IIIThis journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00590.

Mid- to long-term clinical outcomes of arthroscopic surgery for external snapping hip syndrome.

ABSTRACTThis study evaluated the outcomes of arthroscopic surgery for the treatment of external snapping hip at 2- to 10-year follow-ups. Eighteen patients with refractory external snapping hip treated by arthroscopic surgery were enrolled in this prospective study. All patients underwent unsuccessful conservative treatment for more than 3 months before surgery. We made diamond-shaped defects on the iliotibial band and resected peripheral fibrosis tissues for iliotibial band release with an arthroscopic approach. The visual analog scale (VAS), modified Harris hip score and return to previous level of activity were evaluated as functional outcomes. In addition, residual discomfort or the presentation of complications was also investigated. The average follow up period was 7 years. The modified Harris hip score increased from 70.08 preoperatively to 93.14 postoperatively, and the VAS score decreased from 3.67 preoperatively to 1.17 2 weeks after the operation and declined to 0.33 at the last follow-up. Neither recurrence of snaps nor complications were recorded. Two patients complained of a tight sensation with tenderness after exertion. Our clinical outcomes were compatible with those of previous studies, and no long-term complications were noted, even with a relatively longer follow-up period than what was reported in previous studies. Arthroscopic surgery is a safe and effective treatment that can provide promising long-term clinical outcomes for patients with refractory external snapping hip.

Snapping Hip Syndrome: A Comprehensive Update.

This is a comprehensive literature review regarding the pathogenesis, diagnosis, and treatment of snapping hip syndrome (SHS). It covers the diverse etiology of the syndrome and management steps from conservative to more advanced surgical techniques. Recent advances in imaging modalities may help in diagnosing and treating SHS. Additionally, arthroscopic procedures can prove beneficial in treating recalcitrant cases of SHS and have recently gained popularity due to their non-invasive nature. SHS presents as an audible snap due to anatomical structures in the medial thigh compartment and hip. While often asymptomatic, in some instances, the snap is associated with pain. Its etiology can be broadly classified between external SHS and internal SHS, which involve different structures but share similar management strategies. The etiology can be differentiated by imaging and physical exam maneuvers. Treatment is recommended for symptomatic SHS and begins conservatively with physical therapy, rest, and anti-inflammatory medications. Most cases resolve after 6-12 months of conservative management. However, arthroscopic procedures or open surgical management may be indicated for those with persistent pain and symptoms. Different surgical approaches are recommended when treating internal SHS vs.external SHS. Due to advancements in treatment options, symptomatic SHS commonly becomes asymptomatic following intervention.

Multifaceted Physiotherapeutic approach in Snapping Hip Syndrome: A Case Report

Introduction: Snapping hip syndrome or “coxa saltans,” sometimes called as dancer’s hip, is seen in balletdancers. It is a condition caused by the movement of tendon or a muscle over a bony eminence in the hip inwhich snapping sound is heard or snapping sensation is felt when a person walks, runs, swing leg aroundor get up from a chair. Snapping Hip Syndrome is just associated with the snapping sound and no suchdiscomfort or pain is felt. Patients chief complaints were Low back pain radiating down her right leg andsometimes a click sound heard in her right hip. Experts estimate that 5 to 10 percent of the population hassnapping hips with no symptoms or pain, and no treatment is necessary. On the other half some individualshas irritating pain which requires treatment or surgery. Diagnosis of External Snapping Hip Syndrome wasconfirmed when detail evaluation of patient was done using Special test - SLUMPS and Straight Leg Raise(SLR) test, Faber’s test and Ober’s test and Harris Hip Score was also noted.Conclusion: This case report provides a comprehensive rehabilitation plan that helped relieve pain, spasm,increase strength and range of motion. Physiotherapy intervention includes stretching of the tighten muscleand purposeful strengthening to decrease pain and disability of patient. Physiotherapy treatment is foundto be best to resolve patient’s chief complaints. Improving the disability and Social skill improvement waschecked by using Lower Extremity Functional Scale (LEFS) and Quality of Life (QOL).

Surgical interventions for external snapping hip syndrome

PurposeSnapping hip is a common clinical condition, characterized by an audible or palpable snap of the hip joint. When the snap is perceived at the lateral side of the hip, this condition is known as external snapping hip or lateral coxa saltans, which is usually asymptomatic. Snapping hip syndrome (SHS) refers to a painful snap, which is more common in athletes who require increased hip range of motion. The aim of this article is to review the most common endoscopic techniques for the treatment of ESHS, as well as their results and limitations.MethodsThis is a review of the current literature of endoscopic surgical procedures and of the results of the treatment of external snapping hip syndrome.ResultsThe pathogenesis of SHS is mechanical. The initial treatment attempt is conservative, and usually provides good results. Patients who do not respond to conservative management are candidate for surgery. The endoscopic release of the ilio-tibial band or the endoscopic release of the femoral insertion of the gluteus maximum tendon is the most popular technique.ConclusionEndoscopic techniques provide fewer complications compared to open surgery, a lower recurrence rate and good clinical outcomes. More comparative studies with a longer follow-up are required to adequate evaluate the full role of endoscopic techniques in periarticular hip surgery.Level of evidenceLevel V.

External Snapping Hip Syndrome Endoscopic Treatment: “Fan-like” Technique as a Stepwise, Tailor-made Solution

Classically, external snapping hip syndrome (ESHS) is considered to be caused by friction of a tight iliotibial band (ITB) over the greater trochanter (GT), which leads to pain, inflammation, and palpable or audible snapping. Surgical treatment remains a gold standard in patients resistant to conservative measures. Many surgical procedures addressing ESHS exist in the literature, but the vast majority of them involve only plasties of the ITB. However, observations led us to the conclusion that friction of the ITB over the GT may not be the only cause of ESHS and other structures like gluteal fascias or an anterior scarred part of gluteus maximus may be involved. The aim of this article is to provide a detailed description and video demonstration of an endoscopic surgical procedure using a “fan-like” cut to treat the ESHS. Its greatest advantage is the ability to gradually increase the extent of surgery based on intraoperative observations. It turns the procedure into a tailor-made surgery, which offers good and reproducible results.

Imagenological findings of external snapping hip syndrome. Case report

Introduction: External snapping hip syndrome is characterized by a painful sensation accom­panied by an audible snapping noise in the hip when moving. Even though orthopedists are widely aware of this condition, imaging findings still need to be recognized by all radiologists in order to provide more information that allows for the best multidisciplinary treatment. Z-plasty of the iliotibial band is the most used treatment with the best results.Case presentation: Female patient with bi­lateral external hip snapping syndrome on the right side, who was treated initially in a con­servative manner without adequate response; hence, she required surgical management with arthroscopy. All treatment options used for this patient were not successful, and symptoms recurred.Discussion: The diagnosis of snapping hip syndrome is mainly clinical. However, the con­tribution of diagnostic imaging is important to characterize the structures involved in this nosological process, in order to develop the therapeutic planning and do the follow-up.Conclusion: Knowledge on ultrasound and magnetic resonance findings related to this pathology allows radiologists to identify this syndrome and contribute to a timely treatment.

Clinical outcomes of arthroscopic surgery for external snapping hip

BackgroundStudies have reported on the arthroscopic technique for release of external snapping hip syndrome. However, no study with large sample size has been reported for arthroscopic surgery.MethodsPatients with 229 bilateral and 19 unilateral external snapping hips were treated from January 2012 to June 2013. After locating the contracture position, arthroscopic surgery was performed accordingly. Preoperative and postoperative angles were compared.ResultsComparing range of motion, all patients obtained higher adduction and flexion angles. At postoperative follow-up of 24 months, the adduction angle was improved from −14.4 ± 5.14 to 35.7 ± 4.21 for type I, from −31.2 ± 5.22 to 31.7 ± 2.84 for type II, from −49.0 ± 3.47 to 21.6 ± 3.43 for type III, and from −64.5 ± 4.65 to 18.3 ± 3.10 for type IV (P < 0.001). Similarly, the flexion angle was also significantly improved for all the four types (P < 0.001). Excellent ratio and satisfaction rate were good in types I and II. All the clinical features were cured after arthroscopic surgery.ConclusionsArthroscopic surgery could be an effective procedure for external snapping hip, due to less operating time, small scar, fast postoperative recovery, and complete contracture release.

The iliotibial tract: imaging, anatomy, injuries, and other pathology.

The iliotibial tract, also known as Maissiat's band or the iliotibial band, and its associated muscles function to extend, abduct, and laterally rotate the hip, as well as aid in the stabilization of the knee. A select group of associated injuries and pathologies of the iliotibial tract are seen as sequela of repetitive stress and direct trauma. This article intends to educate the radiologist, orthopedist, and other clinicians about iliotibial tract anatomy and function and the clinical presentation, pathophysiology, and imaging findings of associated pathologies. Specifically, this article will review proximal iliotibial band syndrome, Morel-Lavallée lesions, external snapping hip syndrome, iliotibial band syndrome and bursitis, traumatic tears, iliotibial insertional tendinosis and peritendonitis, avulsion fractures at Gerdy's tubercle, and Segond fractures. The clinical management of these pathologies will also be discussed in brief.

Functional Movement Pattern Training Improves Mechanics in a Female Runner With External Snapping Hip Syndrome

Functional Movement Pattern Training Improves Mechanics in a Female Runner With External Snapping Hip Syndrome

US for diagnosis of musculoskeletal conditions in the young athlete: emphasis on dynamic assessment.

Ultrasonography (US) is increasingly recognized as an important tool for diagnosis and therapeutic management of a variety of musculoskeletal conditions. Advantages of US use in the young athlete include the ability to diagnose dynamic conditions that are occult with other modalities, provide additional diagnostic information, and aid in treatment. Uses of US in young patients include evaluation of acquired musculoskeletal conditions that manifest with symptoms and assessment of congenital variants that may manifest with pain or limitations in activity. Acquired conditions in the young athlete include tendon disorders, such as proximal tendinosis, and ligament disorders, such as anterior talofibular ligament or ulnar collateral ligament tears. While static images are frequently able to depict these disorders without difficulty, a dynamic examination that provides stress to the joint of interest may be able to uncover a ligament tear or insufficiency and concurrently provide the clinician with information regarding joint stability. Numerous congenital variants that occur throughout the musculoskeletal system can be associated with awkward sensations such as snapping, popping, and clunking and occasionally with pain. Pathologic processes associated with congenital variants in the upper extremities include slipping rib syndrome, atraumatic anterior subluxation of the sternoclavicular joint, and snapping triceps syndrome. Conditions that affect the lower extremities include internal and external snapping hip syndrome, snapping knee syndrome, and medial plica syndrome. The dynamic capability of US is ideal for diagnosis of many conditions that affect the musculoskeletal system of the young athlete, many of which would be difficult or impossible to identify with use of other imaging modalities.

An unusual cause of external snapping hip

The external snapping hip syndrome is a condition characterized by palpable or audible snap on the lateral region of the hip occurring during movements and sometimes associated with pain. It is typical of young adults and athletes and can be favored by the abnormal sliding of the iliotibial band or of the gluteus maximus muscle over the greater trochanter. We present a case of external snapping hip syndrome occurring in a young woman secondary to a dysmorphic sickle-shaped myotendinous junction of the gluteus maximus muscle. Diagnosis was allowed by an integrated clinical and radiological approach, based on dynamic ultrasound and magnetic resonance imaging (MRI).

Paper # 126: Arthroscopic Release of External Snapping Hip Syndrome

Paper # 126: Arthroscopic Release of External Snapping Hip Syndrome

Endoscopic Release of the Iliopsoas Tendon and Iliotibial Band

Indications for endoscopic surgery of the hip have expanded recently. The technique has found a clear indication in the management of snapping hip syndromes, both the external snapping hip and the internal snapping hip. Even though the snapping hips (external and internal) share a common name, they are very different in origin. The external snapping hip is produced by the iliotibial band snapping over the prominence of the greater trochanter during flexion and extension. Indication for surgical treatment is painful snapping with failure of conservative treatment. The endoscopic technique is designed to release the iliotibial band, producing a diamond shape defect on the iliotibial band lateral to the greater trochanter. The defect allows the greater trochanter to move freely without snapping. The greater trochanteric bursa is resected through the defect, and the abductor tendons are inspected. This procedure is performed without traction, and usually only the peritrochanteric space is accessed. If necessary, hip arthroscopy can also be performed. There is limited literature regarding the results of endoscopic treatment for the external snapping hip syndrome, but early reports are encouraging. The internal snapping hip syndrome is produced by the iliopsoas tendon snapping over the iliopectineal eminence or the femoral head. The snapping phenomenon usually occurs with extension of the hip from a flexed position of more that 90°. Two different endoscopic techniques have been described to treat this condition. The iliopsoas tendon is released at the level of the hip joint; with this technique, the iliopsoas bursa is accessed through an anterior hip capsulotomy and is frequently referred to as a transcapsular release. The second technique is a release at the insertion of the iliopsoas tendon on the lesser trochanter; with this technique, the iliospaos bursa is accessed directly. In every report, the iliopsoas tendon release has been combined with arthroscopy of the hip joint. It has been documented that more than half of the patients with internal snapping hip syndrome have intra-articular hip pathology. The results of endoscopic release of the iliopsoas tendon in the treatment of internal snapping hip syndrome are encouraging and seem to be better than those reported for open procedures.

Paper 25: Endoscopic Gluteus Maximus Tendon Release for External Snapping Hip Syndrome

External snapping hip syndrome may be caused by either the ITB or gluteus maximus tendon snapping over the greater trochanter. The purpose of this paper is to describe a new endoscopic technique used to decrease the tension of the ITB complex by releasing the femoral insertion of the gluteus maximus tendon.

Paper 24: Arthroscopic Release of External Snapping Hip Syndrome

Paper 24: Arthroscopic Release of External Snapping Hip Syndrome

Endoscopic Treatment of Snapping Hips, Iliotibial Band, and Iliopsoas Tendon

Indications for endoscopic surgery of the hip have expanded recently. The technique has found a clear indication in the management of snapping hip syndromes, both external snapping hip and internal snapping hip. Even though the snapping hips (external and internal) share a common name, they are very different in origin. The external snapping hip is produced by the iliotibial band snapping over the prominence of the greater trochanter during flexion and extension. Indication for surgical treatment is painful snapping with failure of conservative treatment. The endoscopic technique is designed to release the iliotibial band producing a diamond shape defect on the iliotibial band lateral to the greater trochanter. The defect allows the greater trochanter to move freely without snapping. The greater trochanteric bursa is resected through the defect and the abductor tendons inspected. This procedure is performed without traction and usually only the peritrochanteric space is accessed. If necessary, hip arthroscopy can also be performed. There is limited literature regarding the results of endoscopic treatment for the external snapping hip syndrome, but early reports are encouraging. The internal snapping hip syndrome is produced by the iliopsoas tendon snapping over the iliopectineal eminence or the femoral head. The snapping phenomenon usually occurs with extension of the hip from a flexed position of more than 90 degree. Two different endoscopic techniques have been described to treat this condition. Iliopsoas tendon release at the level of the hip joint, with this technique the iliopsoas bursa is accessed through an anterior hip capsulotomy and is frequently referred to as a transcapsular release. The second technique is a release at the insertion of the iliopsoas tendon on the lesser trochanter, with this technique the iliospaos bursa is accessed directly. In every report the iliopsoas tendon release has been combined with arthroscopy of the hip joint. It has been documented that more than half of the patients with internal snapping hip syndrome have intra-articular hip pathology. The results of endoscopic release of the iliopsoas tendon in the treatment of internal snapping hip syndrome are encouraging and seem to be better than those reported for open procedures.

External Snapping Hip Syndrome: Emphasis on the MR Imaging

Purpose: The aim of this study is to evaluate the MR imaging features of patients with external snapping hip syndrome. Materials and Methods: We retrospectively reviewed 63 hip MR images. The images were analyzed according to the thickness and contour of the iliotibial band and the gluteus maximus, the presence of bone marrow edema, bursitis, joint effusion and other associated findings. Results: The MR imaging of 22 hips with snapping hip syndrome depicted the causes of external snapping hip syndrome in twenty cases (90%). The MR imaging features of the snapping hip included thickening of the iliotibial band in twelve cases (55%) and/or thickening of the anterior band of the gluteus maximus in nineteen (86%), and a wavy contour of the iliotibial band or the anterior band of the gluteus maximus in ten cases (45%). These findings show a significant p value (