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Jia Jia, Ke-Qin Gao
A new fossil salamander, Nuominerpeton aquilonaris (gen. et sp. nov.), is named and described based on specimens from the Lower Cretaceous Guanghua Formation of Inner Mongolia, China. The new discovery documents a far northern occurrence of Early Cretaceous salamanders in China, extending the geographic distribution for the Mesozoic fossil record of the group from the Jehol area (40th-45th parallel north) to near the 49th parallel north. The new salamander is characterized by having the orbitosphenoid semicircular in shape; coracoid plate of the scapulocoracoid greatly expanded with a convex ventral and posterior border; ossification of two centralia in carpus and tarsus; and first digit being about half the length of the second digit in both manus and pes...
2016: PeerJ
Taku Hatta, Shingo Nobuta, Toshitake Aizawa, Koichi Sasajima, Soichi Nakajima, Masahito Honda, Gosuke Oki, Yoshiaki Yamanaka, Eiji Itoi
The aim of our study is to evaluate the clinical and radiologic outcomes in patients with terrible triad injury, who underwent surgical treatment with or without the medial collateral ligament (MCL) repair. Fourteen patients who underwent surgery with a minimum of 12-month follow-up (mean, 17 months) were reviewed. Based on the systematic treatment protocol, radial head fracture, lateral collateral ligament, and coracoid fracture were treated. Subsequently, torn MCL was repaired in 7 patients, whereas in the remaining 7 patients, the MCL was not treated...
September 19, 2016: Orthopedic Reviews
Mona Alilet, Julien Behr, Jean-Philippe Nueffer, Benoit Barbier-Brion, Sébastien Aubry
: The subscapularis (SSC) muscle is the most powerful of the rotator cuff muscles, and plays an important role in shoulder motion and stabilization. SSC tendon tear is quite uncommon, compared to the supraspinatus (SSP) tendon, and, most of the time, part of a large rupture of the rotator cuff. Various complementary imaging techniques can be used to obtain an accurate diagnosis of SSC tendon lesions, as well as their extension and muscular impact. Pre-operative diagnosis by imaging is a key issue, since a lesion of the SSC tendon impacts on treatment, surgical approach, and post-operative functional prognosis of rotator cuff injuries...
October 17, 2016: Insights Into Imaging
Alexandre Hardy, Philippe Loriaut, Benjamin Granger, Ahmed Neffati, Audrey Massein, Laurent Casabianca, Hugues Pascal-Moussellard, Antoine Gerometta
PURPOSE: The arthroscopic Latarjet procedure has provided reliable results in the treatment of anterior shoulder instability. However, this procedure remains technically challenging and is related to several complications. The morphology of the coracoid and the glenoid are inconsistent. Inadequate coracoid and glenoid preparing may lead to mismatching between their surfaces. Inadequate screws lengthening and orientation are a major concern. Too long screws can lead to suprascapular nerve injuries or hardware irritation, whereas too short screws can lead to nonunions, fibrous unions or migration of the bone block...
October 12, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
David L Haeni, Gaëtan Opsomer, Amit Sood, Jeremy Munji, Matthieu Sanchez, Benoit Villain, Gilles Walch, Laurent Lafosse
BACKGROUND AND HYPOTHESIS: The Latarjet procedure has been shown to be a reliable method to prevent recurrent anterior shoulder instability. Coracoid bone graft osteolysis is a potential catastrophic complication and can lead to recurrent instability. The purpose of our study is to present a novel quantitative method to measure the amount of coracoid bone osteolysis using 3-dimensional (3D) computed tomography (CT) scan imaging. MATERIALS AND METHODS: This is a prospective study with 15 patients (16 shoulders) who underwent an arthroscopic Latarjet procedure...
October 7, 2016: Journal of Shoulder and Elbow Surgery
Jorge Delgado, Diego Jaramillo, Nancy A Chauvin
Increased physical activity in childhood has resulted in a large number of sports-related injuries. Although there is overlap between the sports-related injuries seen in pediatric and adult patients, important differences exist in the injury patterns of pediatric patients. These differences are related to the continuous changes in the developing skeleton and its relationship with adjacent soft tissues. The imbalance in strength between the growing bones and the nearby tendons and ligaments makes the bones prone to acute and chronic injuries...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
P Gendre, C-E Thélu, T d'Ollonne, C Trojani, J-F Gonzalez, P Boileau
BACKGROUND: The purpose of this study was to evaluate suture button fixation in a bone block (Bristow and Latarjet) procedure. We hypothesize that (1) cortical button fixation will allow predictable and reproducible bone union and (2) minimize the complications reported with screw fixation. MATERIALS AND METHODS: Seventy patients (mean age, 27 years) underwent an arthroscopic bone block procedure with a guided surgical approach and suture button fixation for recurrent anterior shoulder instability...
October 5, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
P Clavert, G Koch, L Neyton, P Metais, J Barth, G Walch, L Lafosse
BACKGROUND: Standard radiography with an antero-posterior view and Bernageau's glenoid profile view is the method most widely reported in the literature to assess coracoid bone block position and fusion. OBJECTIVE: The aim of this cadaver study was to determine whether the antero-posterior and Bernageau's radiographs provide a reliable and reproducible evaluation of the position of a coracoid bone block and its fixation screws. METHOD: An isolated scapula showing no evidence of osteoarthritis or other abnormalities was used...
October 4, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
Joshua A Greenspoon, Peter J Millett, Samuel G Moulton, Maximilian Petri
BACKGROUND: Tendon transfers can be a surgical treatment option in managing younger, active patients with massive irreparable rotator cuff tears. The purpose of this article is to provide an overview of the use of tendon transfers to treat massive irreparable rotator cuff tears and to summarize clinical outcomes. METHODS: A selective literature search was performed and personal surgical experiences are reported. RESULTS: Latissimus dorsi transfers have been used for many years in the management of posterosuperior rotator cuff tears with good reported clinical outcomes...
2016: Open Orthopaedics Journal
Naveen Sharma, Avinash Mandloi, Ashish Agrawal, Shailendra Singh
INTRODUCTION: The clavicle, humerus and acromioclavicular (AC) joint separately are very commonly involved in traumatic injuries around the shoulder. Acromioclavicular joint dislocation with distal clavicle fracture is a well recognized entity in clinical practice. AC joint dislocation with mid shaft clavicle fracture is uncommon and only few cases have been reported in literature. However, to the best of our knowledge, this is the first case report to describe an acromioclavicular dislocation with ipsilateral mid shaft clavicle, mid shaft humerus and coracoid process fracture...
April 2016: Journal of Orthopaedic Case Reports
Abbas Rashid, Christopher Lawrence, Graham Tytherleigh-Strong
Traumatic glenohumeral joint dislocation and acromioclavicular joint subluxations tend to occur in young active males. Use of the coracoid process either as a transfer in recurrent instability or in suspensory reconstructions of the coracoclavicular ligaments have gained popularity. However this requires careful consideration in the event of concomitant injuries if they both require surgery.
October 2016: Shoulder & Elbow
Blandine Marion, Shahnaz Klouche, Julien Deranlot, Thomas Bauer, Geoffroy Nourissat, Philippe Hardy
PURPOSE: To compare postoperative pain during the first postoperative week and the position of the coracoid bone block at the anterior aspect of the glenoid after the arthroscopic and the mini-open Latarjet procedure. The secondary purpose was to assess functional results and recurrence after at least 2 years of follow-up. METHODS: This comparative prospective study included patients who underwent a Latarjet-Bristow procedure for anterior shoulder instability in 2012...
September 8, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
Yoshiaki Itoigawa, Alexander W Hooke, John W Sperling, Scott P Steinmann, Kristin D Zhao, Nobuyuki Yamamoto, Eiji Itoi, Kai-Nan An
BACKGROUND: It is not clear whether the anterior capsule should be repaired to the coracoid process or to the native glenoid during the modified Latarjet procedure. We investigated joint stability and range of motion of the shoulder after the modified Latarjet procedure with both of these methods of capsular repair. METHODS: Eighteen fresh-frozen cadaveric shoulders were used. After a Bankart lesion and 6-mm glenoid defect were created, the coracoid process was transferred to the glenoid and fixed with screws...
September 7, 2016: Journal of Bone and Joint Surgery. American Volume
Rohit Singh, Akshay Malhotra, Gillian Cribb, Paul Cool, Stuart Hay
Impingement syndrome is usually caused by irritation of the rotator cuff within the sub acromial space and this includes the coraco-acromial arch (Acromion and Coraco-acromial ligament), the acromio-clavicular joint and occasionally the coracoid. Iatrogenic causes such as sutures, pins, plates or wires left from previous surgery can cause similar symptoms. We present a series of four cases mimicking "classical" impingement symptoms/signs in which the causal pathology was identified outside the sub-acromial space...
September 2016: Annals of Medicine and Surgery
Chuanzhi Xiong, Yaojia Lu, Qiang Wang, Gang Chen, Hansheng Hu, Zhihua Lu
PURPOSE: The aim of this study was to evaluate the outcome of a minimally invasive surgical technique for the treatment of patients with acromioclavicular joint dislocation. METHODS: Sixteen patients with complete acromioclavicular joint dislocation were enrolled in this study. All patients were asked to follow the less active rehabilitation protocol post-operatively. Computed tomography with 3-D reconstruction of the injured shoulder was performed on each patient post operatively for the assessment of the accuracy of the suture anchor placement in the coracoid process and the reduction of the acromioclavicular joint...
September 2, 2016: International Orthopaedics
Ryuzo Arai, Hideto Harada, Hiroyuki Tsukiyama, Yoshimitsu Takahashi, Masahiko Kobayashi, Takahiko Saji, Shuichi Matsuda
BACKGROUND: For shoulder arthroscopy, few anatomical landmarks are available and inexperienced surgeons tend to be adrift due to the limited visual field of the scope. The purpose of this study was to demonstrate the useful landmarks around the glenoid for accurate orientation, and also the safe distance to avoid suprascapular nerve injury during surgical procedures around the glenoid. METHODS: In 15 human solution-fixed cadavers, a cross-section of the shoulder joint on the labrum surface was created...
August 30, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
P D Cowling, M A Akhtar, R Y L Liow
OBJECTIVES: A variety of operative techniques have been described as under the term 'Bristow-Latarjet' procedure. This review aims to define the original procedure, and compare the variation in techniques described in the literature, assessing any effect on clinical outcomes. MATERIALS AND METHODS: A systematic review of 24 studies was performed to compare specific steps of the technique (coracoid osteotomy site, subscapularis approach, orientation and position of coracoid graft fixation and fixation method, additional labral and capsular repair) and detect any effect this variability had on outcomes...
September 2016: Bone & Joint Journal
Santosh Venkatachalam, Phil Storey, Scott J Macinnes, Amjid Ali, David Potter
BACKGROUND: The purpose of the present study was to evaluate the results of the Sheffield bone block procedure for anteroinferior bone loss in traumatic shoulder instability. In this modified open technique, the medial half of coracoid process without its soft tissue attachments is used to provide congruent augmentation of the anteroinferior glenoid and secured with two screws. METHODS: In this retrospective consecutive case series (2007-11), all patients having recurrent traumatic instability with glenoid bone loss > 20% and/or a large Hill-Sachs lesion were included...
April 2016: Shoulder & Elbow
Alexandre Hardy, Antoine Gerometta, Benjamin Granger, Audrey Massein, Laurent Casabianca, Hugues Pascal-Moussellard, Philippe Loriaut
PURPOSE: The Latarjet procedure has shown its efficiency for the treatment of anterior shoulder dislocation. The success of this technique depends on the correct positioning and fusion of the bone block. The length of the screws that fix the bone block can be a problem. They can increase the risk of non-union if too short or be the cause of nerve lesion or soft tissue discomfort if too long. Suprascapular nerve injuries have been reported during shoulder stabilisation surgery up to 6 % of the case...
August 25, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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