gluteus medius strain or tear

Hip abductor deficiency resulting from gluteus medius and minimus pathology is increasingly recognized as a generator of lateral-sided hip pain. In the setting of a failed gluteus medius repair or in patients with irreparable tears, transfer of the anterior portion of the gluteus maximus muscle can be performed to treat gluteal abductor deficiency. The classic description of the gluteus maximus transfer technique relies solely on bone tunnel fixation. This article describes a reproducible technique that incorporates the addition of a distal row to the tendon transfer, which may improve fixation by both compressing the tendon transfer to the greater trochanter and providing improved biomechanical strength to the transfer...

Given that Thoroughbred horses' canter is an asymmetric gait, not only speed but also leading or trailing limbs could affect muscle activities. However, the muscle activity during a canter remains poorly understood. Hence, we aimed to investigate speed and lead-side (leading or trailing) effects on surface electromyography (sEMG) during a canter. The sEMG data were recorded from left Musculus brachiocephalicus (Br), M. infraspinatus (Inf), long head of M. triceps brachii (TB), M. gluteus medius (GM), M. semitendinosus (ST), and M...

PURPOSE: Identify patient preoperative history, exam, and imaging characteristics that increase risk of postoperative failure of gluteus medius/minimus repair, and to develop a decision-making aid predictive of clinical outcomes for patients undergoing gluteus medius/minimus repair. METHODS: Patients from 2012-2020 at a single institution undergoing gluteus medius/minimus repair with minimum two-year follow-up were identified. MRIs were graded according to the "Three-Grade" classification system: grade 1: partial thickness tear, grade 2: full thickness tears with <2cm of retraction, grade 3: full thickness tears with ≥2cm retraction...

BACKGROUND: There is a paucity of information available to clinicians on outcomes of patients undergoing endoscopic surgery for labral repairs and femoroacetabular impingement syndrome with simultaneous repair of the gluteus medius and/or minimus muscles. PURPOSE: To determine whether patients with labral tears and concomitant gluteal pathology who undergo simultaneous endoscopic labral and gluteus medius and/or minimus repair experience similar outcomes to patients with isolated labral tears who undergo endoscopic labral repair alone...

The mechanobiology of the human femoral neck is a focus of research for many reasons including studies that aim to curb age-related bone loss that contributes to a near-exponential rate of hip fractures. Many believe that the femoral neck is often loaded in rather simple bending, which causes net tension stress in the upper (superior) femoral neck and net compression stress in its inferior aspect ("T/C paradigm"). This T/C loading regime lacks in vivo proof. The "C/C paradigm" is a plausible alternative simplified load history that is characterized by a gradient of net compression across the entire femoral neck; action of the gluteus medius and external rotators of the hip are important in this context...

BACKGROUND: The best treatment of degenerative hip abductor tendon lesions remains largely unknown, as the natural course of the disease has not yet been reported. The aim of the present study was to investigate the natural history of symptomatic degenerative hip abductor lesions. HYPOTHESIS: Nonoperatively treated hip abductor lesions progress over time, resulting in refractory hip pain and low functional outcomes. STUDY DESIGN: Case series (prognosis); Level of evidence, 4...

Endoscopic gluteus medius repair is indicated after failed conservative management for debilitating peritrochanteric hip pain. In our experience, most of these surgeries are performed on women, 45 to 75 years old. Often for undersurface high-grade partial-thickness tears and some small full-thickness tears, a single-row repair technique is performed. For larger, full-thickness tears, a double-row repair is often performed. For minimal, superficial, partial-thickness tears with a longitudinal component of tearing through the gluteus medius tendon, a side-to-side repair is performed...

Outcomes following total hip arthroplasty (THA) with concomitant gluteus medius (GM) repair using the direct anterior approach (DAA) are scarce. The primary purpose of this study was to report patient-reported outcome measures (PROMs) with 2-year follow-up of patients with osteoarthritis and GM tear who underwent primary THA and GM repair through the DAA. The secondary purpose was to compare these outcomes with a benchmark propensity-matched control group who underwent a DAA THA without GM tear. Patients were eligible if they received a primary THA and GM repair via the DAA between January 2015 and October 2018 and had baseline PROMs with 2-year follow-up...

Tears in the gluteus medius and minimus tendons are a common cause of greater trochanter pain syndrome (GTPS). Given the non-specific clinical signs and imaging findings, they are often misdiagnosed, with delayed treatment. The lesions can show several aspects: trochanteric bursitis, simple tendinopathy, partial or full-thickness tear, tendon retraction, or fatty degeneration. Non-surgical treatment associates physical rehabilitation and activity modification, oral analgesics, anti-inflammatories and peri-trochanteric injections (corticosteroids, PRP)...

PURPOSE: The current study aimed to report the mid-term follow-up results of endoscopic gluteus medius repair combined with a systematic release of the gluteus maximus reflected tendon. METHODS: Twenty-two patients with a symptomatic full-thickness tear of the gluteus medius tendon, as diagnosed by clinical examination and imaging (MRI), and who had a failure of conservative treatment for at least 6 months, were retrospectively enrolled for this study. An endoscopic repair of gluteus medius was performed for all patients in combination with gluteus maximus reflected tendon release according to the Polesello technique...

Background: This study aimed to estimate the within-day and between-day reliabilities of sonoelastography to measure the strain ratios of lumbopelvic muscles, including multifidus (MF), piriformis (P), quadratus lumborum (QL), and gluteus medius (GM), in a resting position by the sonoelastography device in both patients with unilateral discogenic lumbar pain and healthy individuals. Failthe treatment of deep infection of peri-articular fracture fixation. Methods: First of all, the participants (n=25) were enrolled in this study, including patients (n=15) and healthy subjects (n=10)...

The purpose of this study was to perform an initial, prospective evaluation of imaging findings and outcomes after open surgical repair of gluteus medius tendon tears with bioinductive collagen patch augmentation. A prospective study was performed of patients with clinical and magnetic resonance imaging (MRI) evidence of symptomatic gluteus medius tears who underwent open, double-row suture anchor repair with bioinductive bovine collagen patch augmentation. Preoperative and 6-month postoperative MRIs were reviewed by a fellowship-trained musculoskeletal radiologist, and outcome scores were recorded preoperatively and 6 months postoperatively [Hip Outcome Score (HOS) Sport; HOS Activities of Daily Living (HOS ADL); Modified Harris Hip Score (mHHS) and International Hip Outcomes Tool (iHOT-33)]...

Introduction: Gluteus medius tendon tears may not be feasible for direct repair when significant retraction or fatty degeneration is present. Several augmentation techniques have been reported for challenging cases. We describe a novel technique using a transfer of the anterior portion of the gluteus maximus combined with synthetic mesh to reinforce the direct suture of the gluteus medius. The goal of this study was to assess the functional and pain outcomes in three patients treated with this reconstruction technique...

BACKGROUND: There is a paucity of information in the literature on midterm outcomes of endoscopic gluteus medius and/or minimus repair with concomitant labral treatment using only modern surgical techniques. PURPOSE: To define the minimal clinically important difference (MCID) and Patient Acceptable Symptom State (PASS) at a minimum of 5 years postoperatively for patients undergoing endoscopic hip abductor repair with routine capsular closure. STUDY DESIGN: Case series; Level of evidence, 4...

PURPOSE: The primary purpose of this study was to systematically review the literature on intraoperative findings during endoscopic treatment for GTPS. Secondary outcomes were preoperative imaging findings and postoperative functional outcome measures. METHODS: Medline, PubMED, and Embase databases were searched from inception (1946, 1966, 1974 respectively), to July 15, 2021 for records reporting intraoperative findings during endoscopic surgery for GTPS. Studies of level I-IV evidence were eligible...

The gluteus medius originates on the posterior face of the ilium between the posterior and anterior gluteal lines and inserts into the lateral and superoposterior facets of the greater trochanter. Because of the asymmetric nature of the muscle, tears are more likely to occur on the thinner anterolateral portion of the tendon footprint. Gluteus medius tears range from interstitial, partial thickness tears to retracted, full-thickness tears and may result from trauma, but they are more commonly the result of chronic degeneration...

Purpose: To determine the percent maximal outcome improvement willingness thresholds (MOWTs) for the Nonarthritic Hip Score (NAHS) and the visual analog scale (VAS) for pain that were associated with a patient's willingness to undergo surgery, in retrospect, given the known outcome of their primary hip arthroscopy with concomitant endoscopy for gluteus medius (GM) tear repair. Methods: An anchor question was provided to patients who underwent primary hip arthroscopy for femoroacetabular impingement syndrome with concomitant endoscopic GM tear repair between April 2008 to April 2020...

Abductor insufficiency can cause abnormal gait, lateral hip pain, and abduction weakness in both native and prosthetic hips. In the setting of total hip arthroplasty (THA), abductor insufficiency may occur secondary to iatrogenic injury to the superior gluteal nerve or gluteus medius muscle, adverse local tissue reactions owing to metal-associated prosthetics, and osteolysis owing to bearing wear or infection. Surgical reconstruction of the abductor complex is indicated for patients with chronic tears who have pain, weakness, limp, and/or instability...

PURPOSE: The aim of this retrospective study is to present the clinical results of open repair of gluteus medius and gluteus minimus tendon tears using the single-row suture anchor technique. METHODS: This retrospective study included 43 participants after open repair of the abductor tendon of the hip joint using a single-row suture anchor technique. Clinical outcome parameters were assessed by VAS (0-10), gait safety (1 = absolutely safe gait without assistive devices - 10 = gait not possible), SHV (0-100%), mHHS, WOMAC, and gluteal muscle strength status from single-leg stance and against gravity...

For the pelvic fracture reduction, generally the fragment of the unaffected side is fixed and the affected side is moved to its correct anatomical position and orientation. During the pelvic fracture reduction, circumpelvic muscles deformation is closely related to the surgical accuracy. In this article, the biomechanical properties of musculoskeletal tissue during pelvic fracture reduction are studied. Five-parameter hyperelastic model named Mooney-Rivlin is adopted to analyze muscle's stress-strain relationship...