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Reinhold Ganz

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
Kai Ziebarth, Michael Leunig, Theddy Slongo, Young-Jo Kim, Reinhold Ganz
BACKGROUND: Traditionally arthrotomy has rarely been performed during surgery for slipped capital femoral epiphysis (SCFE). As a result, most pathophysiological information about the articular surfaces was derived clinically and radiographically. Novel insights regarding deformity-induced damage and epiphyseal perfusion became available with surgical hip dislocation. QUESTIONS/PURPOSES: We (1) determined the influence of chronicity of prodromal symptoms and severity of SCFE deformity on severity of cartilage damage...
July 2013: Clinical Orthopaedics and related Research
Christoph E Albers, Simon D Steppacher, Reinhold Ganz, Moritz Tannast, Klaus A Siebenrock
BACKGROUND: Although periacetabular osteotomy (PAO) for developmental dysplasia of the hip (DDH) provides conceptual advantages compared with other osteotomies and reportedly is associated with joint survivorship of 60% at 20 years, the beneficial effect of proper acetabular reorientation with concomitant arthrotomy and creation of femoral head-neck offset on 10-year hip survivorship remains unclear. QUESTIONS/PURPOSES: We asked the following questions: (1) Does the 10-year survivorship of the hip after PAO improve with proper acetabular reorientation and a spherical femoral head; (2) does the Merle d'Aubigné-Postel score improve; (3) can the progression of osteoarthritis (OA) be slowed; and (4) what factors predict conversion to THA, progression of OA, or a Merle d'Aubigné-Postel score less than 15 points? METHODS: We retrospectively reviewed 147 patients who underwent 165 PAOs for DDH with two matched groups: Group I (proper reorientation and spherical femoral head) and Group II (improper reorientation and aspherical femoral head)...
May 2013: Clinical Orthopaedics and related Research
Hans M Manner, Nicholas H Mast, Reinhold Ganz, Michael Leunig
A 16-year-old boy sustained a traumatic posterior dislocation of the right hip. After initial closed reduction, the hip spontaneously redislocated within 2 days. Four days after the initial dislocation, the patient was transferred to the authors' institution, where a radiographic workup showed a severe capsular and labral disruption from the posterior aspect of the acetabulum. Subsequently, the patient underwent operative treatment using the technique of surgical hip dislocation through a digastric osteotomy as described by Ganz...
November 2012: Journal of Pediatric Orthopedics. Part B
Michael Leunig, Lisa M Tibor, Florian D Naal, Reinhold Ganz, Matthias R Steinwachs
BACKGROUND: Compared to knees, hips have more bony constraint and soft tissue coverage. Thus, repair of focal cartilage defects in hips requires more invasive and technically complex surgeries than simple arthroscopy or arthrotomy. Autologous matrix-induced chondrogenesis (AMIC) is a second-generation bone marrow stimulation technique. Improvement in Tegner, Lysholm, International Cartilage Repair Society (ICRS), and Cincinnati scores has been reported at 1 and 2 years after AMIC in knees...
December 2012: Clinical Orthopaedics and related Research
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