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Reinhold Ganz

Morteza Kalhor, Kaveh Gharanizadeh, Paulo Rego, Michael Leunig, Reinhold Ganz
OBJECTIVES: The purpose of this study was to report (1) a different but specific pattern of impingement in hips involved with valgus slipped capital femoral epiphysis (valgus SCFE) and (2) the results of surgical treatment using intracapsular realignment techniques. DESIGN: Case series. SETTING: Multiple academic centers. PATIENTS: Six patients with 8 involved hips referred for valgus alignment of proximal femoral epiphysis (valgus SCFE)...
February 2018: Journal of Orthopaedic Trauma
Reinhold Ganz, Guido Grappiolo, Jeffrey W Mast, Joel Matta, Luigino Turchetto
Proximal femoral fracture and coxarthrosis are the most common orthopaedic problems of osteopetrosis. Fracture fixation is difficult and one-third fail, with total hip replacement as the final solution. There is little reported experience about how to deal with this particular type of bone and what has been published to date is surprisingly non-specific. Corrective osteotomies are mainly undertaken in children for non-union of a fractured femoral neck and/or for coxa vara. However, any information about technical problems and solutions is scarce and barely instructive...
December 2017: Journal of Hip Preservation Surgery
Michael Leunig, Jonathan M Vigdorchik, Aidin Eslam Pour, Silvia Willi-Dähn, Reinhold Ganz
CASE: A large surgical correction was required for severe hip dysplasia, which was associated with a delayed-onset sciatic nerve injury in an adolescent patient. A cortical bone spur on the outside of the acetabular fragment produced an indirect injury that became symptomatic during mobilization of the patient. CONCLUSION: The risk of direct injury to the sciatic nerve during a periacetabular osteotomy is quite low when the osteotomy is executed in extension with abduction of the hip and flexion of the knee to reduce tension on the sciatic nerve...
January 2017: JBJS Case Connector
Paulo Rego, Vasco Mascarenhas, Diego Collado, Ana Coelho, Luis Barbosa, Reinhold Ganz
BACKGROUND: Knowledge of the vascular supply of the femoral head is crucial for hip-preserving surgical procedures. The critical area for reshaping cam deformity is at the retinacular vessel penetration, an area with ill-defined topographic anatomy. We performed a cadaver study of the extension of the lateral retinaculum near the head-neck junction, distribution of the arterial vascular foramina, and initial intracapital course of these vessels. METHODS: In 16 fresh proximal parts of the femur without head-neck deformities, the deep branch of the medial femoral circumflex artery was injected with gadolinium for magnetic resonance imaging (MRI) sequences to identify arterial structures...
July 19, 2017: Journal of Bone and Joint Surgery. American Volume
Sufian S Ahmad, Christoph E Albers, Lorenz Büchler, Sandro Kohl, Suhaib S Ahmad, Frank Klenke, Klaus A Siebenrock, Martin Beck
BACKGROUND: The aim of this study was to identify the 100 most cited classics in the field of hip research analysing their qualities and characteristics. METHODS: Hip joint related articles were identified and the hundred most cited selected for subsequent analysis of citation count, current citation rate, citation density (citations/article age), authorship, geographic origin institution, and level of evidence (LOE). RESULTS: In a total of 121 journals, 1,311,851 articles were published between 1945 and 2013, of which 1,287 (0...
March 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Michael Leunig, Reinhold Ganz
No abstract text is available yet for this article.
December 2015: Clinical Orthopaedics and related Research
Alessandro Massè, Alessandro Aprato, Caterina Alluto, Marco Favuto, Reinhold Ganz
BACKGROUND: Femoral head fractures are rare injuries; incongruency and instability are indications for surgical intervention. Anterior, posterior, and transtrochanteric surgical approaches have been proposed, but the exposure is limited with classical approaches. Surgical hip dislocation allows for a 360° view of the head and may facilitate a reduction in selected head fractures, but to our knowledge, few studies have reported on the results with this technique. We therefore report on the (1) quality of fracture reduction; (2) modified Harris hip score at a minimum of 2 years (mean, 6 years, range, 26-122 months); and (3) frequency of complications, including avascular necrosis (AVN), arthritis development, and heterotopic ossification, in a case series of patients with femoral head fractures treated with this approach...
December 2015: Clinical Orthopaedics and related Research
Ravindra Gudena, Abdullah Alzahrani, Pamela Railton, James Powell, Reinhold Ganz
There is limited knowledge regarding the anatomic relationships and functional anatomy of the Obturator Externus muscle (OE). It is described as a muscle which originates from the external bony margin of the obturator foramen with a cylindrical tendon which passes like a sling under the femoral neck and inserts in the trochanteric fossa. The primary aim of this study is to describe the OE morphology and its anatomic relationship to the acetabulum. A secondary aim is to postulate its action. Eighteen fresh human cadaveric hips were dissected to investigate the anatomy of the OE...
September 2015: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Benjamin R Coobs, Ao Xiong, John C Clohisy
The Bernese periacetabular osteotomy, as originally described by Dr. Reinhold Ganz, is an effective treatment for symptomatic acetabular dysplasia in the pre-arthritic young adult hip. This technique has experienced several recent modifications in an attempt to optimize the clinical outcomes of these patients. We will review the clinical presentation of acetabular dysplasia, indications for surgery, contemporary refinements in technique and clinical results following periacetabular osteotomy. In well-selected patients, this reconstructive osteotomy should be considered safe and effective in alleviating pain and improving hip function...
July 2015: Journal of Arthroplasty
Joy A Hessel
Besides professional sports, what do Alex Rodriguez, Michelle Kwan, and Greg Norman have in common? They all suffered from a condition called femoroacetabular impingement, or FAI. First identified by Dr. Reinhold Ganz, an orthopaedic surgeon in the mid-1990s, FAI has gained recognition in recent years as more professional athletes have been diagnosed with this condition. Characterized as a condition involving an abnormal morphological shape of the femoral head (cam type deformity) or acetabulum (pincer type deformity) of the hip joint, FAI is commonly diagnosed after the athlete complains of hip or groin pain and restricted range of motion (, p...
May 2014: Orthopaedic Nursing
Reinhold Ganz, Michael Leunig, Jeff Mast, Michael D Stover
No abstract text is available yet for this article.
November 2013: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Pedro Costa Rocha, Gregory Klingenstein, Reinhold Ganz, Bryan T Kelly, Michael Leunig
INTRODUCTION: With excessive acetabular coverage, such as coxa profunda or protrusio, contact between the femoral neck and acetabular rim cause direct damage to the labrochondral junction, and indirect edge loading from a levering effect which may result in hip arthrosis. Arthrosis may be delayed or avoided by addressing the overcoverage and restoring mechanical function of the labrum. We describe four cases of adjunctive complete acetabular labral replacement for circumferential, irreparable labral injury using fresh frozen semitendinous allografts through surgical hip dislocation...
November 2013: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Michael Leunig, Reinhold Ganz
No abstract text is available yet for this article.
December 2013: Clinical Orthopaedics and related Research
Moritz Tannast, Gilles Pfander, Simon D Steppacher, Jeffrey W Mast, Reinhold Ganz
Acetabular retroversion following acetabular osteotomy in hips with dysplasia can negatively effect the outcome. Total retroversion, where the entire anterior rim is lateral to the posterior rim, is rare and can easily be missed on pelvic radiographs due to the lack of a crossover sign. We evaluated the clinical and radiographic presentation, the surgical management, and the outcome of hips with total acetabular retroversion. We retrospectively reviewed 26 patients (26 hips) with total retroversion following 15 periacetabular osteotomies (PAO), 10 triple type, and one Salter osteotomy...
November 2013: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Reinhold Ganz, Theddy Slongo, Luigino Turchetto, Alessandro Massè, David Whitehead, Michael Leunig
Impingement of the lesser trochanter on the ischium or the posterior acetabular rim is not a frequent pathology, but has recently received increased recognition. We have seen 14 cases over a period of 14 years, but concentrate on eight hips showing complex deformities revealing similar characteristics. All eight hips had a residual Perthes or a Perthes-like disease with an elliptically deformed femoral head, but a congurent joint a short or absent femoral neck, a high riding greater trochanter, and a reduced vertical distance between the head and the lesser trochanter...
November 2013: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Simon Damian Steppacher, Christoph Emanuel Albers, Klaus Arno Siebenrock, Moritz Tannast, Reinhold Ganz
No abstract text is available yet for this article.
November 2013: Clinical Orthopaedics and related Research
Alessandro Masse, Alessandro Aprato, Luca Rollero, Andrea Bersano, Reinhold Ganz
BACKGROUND: Surgical hip dislocation allows for a 360° view of the acetabulum and may facilitate a reduction in selected acetabular fractures. To our knowledge there is no description in the literature of the different techniques used to reduce acetabular fractures through this approach. The aims of this study are to describe a technique of hip surgical dislocation to treat a variety of acetabular fracture patterns and to ascertain the early results with this technique, including the quality of fracture reductions achieved, clinical results, operative time, and complications such as avascular necrosis and heterotopic ossification...
December 2013: Clinical Orthopaedics and related Research
Moritz Tannast, Neil Macintyre, Simon D Steppacher, Harish S Hosalkar, Reinhold Ganz, Klaus A Siebenrock
The analysis and treatment of hips with healed Legg-Calvé-Perthes disease (LCPD) differs substantially from the treatment in the acute phase of the disease. More specifically, the treating orthopaedic surgeon is often faced with a complex three-dimensional pathomorphology of the hip that is difficult to understand and correct. To date, none of the current classification systems provide a useful decision-making algorithm with regards to the type of surgical intervention necessary to improve hip function in patients with sequelae of LCPD...
November 2013: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
Lisa M Tibor, Reinhold Ganz, Michael Leunig
BACKGROUND: The most common location of labral tears and chondral damage in the hip is the anterosuperior region of the acetabulum, which is associated with pain in flexion and rotation. We describe a case series of patients with labral tears, ganglion formation, and chondromalacia isolated to the anteroinferior acetabulum. Clinically, patients had pain in extension and internal rotation. CASE DESCRIPTIONS: Isolated anteroinferior labral hypertrophy and ganglion were first observed in a patient with coxa valga...
December 2013: Clinical Orthopaedics and related Research
Simon D Steppacher, Christoph E Albers, Klaus A Siebenrock, Moritz Tannast, Reinhold Ganz
BACKGROUND: Traumatic posterior hip dislocation in adults is generally understood to be the result of a high-energy trauma. Aside from reduced femoral antetorsion, morphologic risk factors for dislocation are unknown. We previously noticed that some hips with traumatic posterior dislocations had evidence of morphologic features of femoroacetabular impingement (FAI), therefore, we sought to evaluate that possibility more formally. QUESTIONS/PURPOSES: We asked whether hips with a traumatic posterior hip dislocation present with (1) a cam-type deformity and/or (2) a retroverted acetabulum...
June 2013: Clinical Orthopaedics and related Research
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