scholarly journals Avulsion Fracture of the Coracoid Process at the Coracoclavicular Ligament Insertion: A Report of Three Cases

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Takeshi Morioka ◽  
Kiyohisa Ogawa ◽  
Masaaki Takahashi
Keyword(s):  
Avulsion Fracture ◽  
Attachment Site ◽  
Coracoid Process ◽  
Type I ◽  
Coracoclavicular Ligament ◽  
Clavicular Fracture ◽  
Avulsion Fractures ◽  
Inferior Surface ◽  
Excellent Outcome ◽  
Conoid Ligament

Avulsion fracture at the site of attachment of the coracoid process of the coracoclavicular ligament (CCL) is extremely rare. We presented three adult cases of this unusual avulsion fracture associated with other injuries. Case  1 was a 25-year-old right-handed male with a left distal clavicular fracture with an avulsion fracture of the coracoid attachment of the CCL; this case was treated surgically and achieved an excellent outcome. Case  2 was a 39-year-old right-handed male with dislocation of the left acromioclavicular joint with two avulsion fractures: one at the posteromedial surface of the coracoid process at the attachment of the conoid ligament and one at the inferior surface of the clavicle at the attachment site of the trapezoid ligament; this case was treated conservatively, and unfavorable symptoms such as dull pain at rest and sharp pain during some daily activities remained. Case  3 was a 41-year-old right-handed female with a right distal clavicular fracture with an avulsion fracture of the coracoid attachment of the conoid ligament; this case was treated conservatively, and the distal clavicular fracture became typical nonunion. These three cases corresponded to type I fractures according to Ogawa’s classification as the firm scapuloclavicular connection was destroyed and also to double disruption of the superior shoulder suspensory complex. We recommend surgical intervention when treating patients with this type of acute or subacute injury, especially in those engaging in heavy lifting or overhead work.

scholarly journals Coracoid Process Avulsion Fracture at the Coracoclavicular Ligament Attachment Site in an Osteoporotic Patient with Acromioclavicular Joint Dislocation

2016 ◽  
Vol 2016 ◽  
pp. 1-3 ◽  
Author(s):  
Yoshihiro Onada ◽  
Takahisa Umemoto ◽  
Kimitaka Fukuda ◽  
Tomomichi Kajino
Keyword(s):  
Computed Tomography ◽  
Acromioclavicular Joint ◽  
Three Dimensional ◽  
Attachment Site ◽  
Coracoid Process ◽  
Acromioclavicular Joint Dislocation ◽  
Coracoclavicular Ligament ◽  
Ct Reconstruction ◽  
Avulsion Fractures ◽  
Satisfactory Outcome

Coracoid fractures are uncommon, mostly occur at the base or neck of the coracoid process (CP), and typically present with ipsilateral acromioclavicular joint (ACJ) dislocation. However, CP avulsion fractures at the coracoclavicular ligament (CCL) attachment with ACJ dislocation have not been previously reported. A 59-year-old woman receiving glucocorticoid treatment fell from bed and complained of pain in her shoulder. Radiographs revealed an ACJ dislocation with a distal clavicle fracture. Three-dimensional computed tomography (3D-CT) reconstruction showed a small bone fragment at the medial apex of the CP. She was treated conservatively and achieved a satisfactory outcome. CP avulsion fractures at the CCL attachment can occur in osteoporotic patients with ACJ dislocations. Three-dimensional computed tomography is useful for identifying this fracture type. CP avulsion fractures should be suspected in patients with ACJ dislocations and risk factors for osteoporosis or osteopenia.

scholarly journals Clinical and epidemiological features of tibial tubercle avulsion fracture in Chinese adolescents

2020 ◽  
Vol 3 (3) ◽  
pp. e000169
Author(s):  
Yueqiang Mo ◽  
Dahui Wang
Keyword(s):  
Avulsion Fracture ◽  
Chinese Adolescents ◽  
Tibial Tubercle ◽  
Type I ◽  
Cannulated Screws ◽  
Excellent Outcome ◽  
Type Iv ◽  
Epidemiological Features ◽  
Satisfactory Outcome ◽  
Tibial Tubercle Avulsion Fracture

BackgroundTibial tubercle avulsion fracture is rare in children. Accumulated knowledge on clinical and epidemiological features of this fracture is of practical significance for clinical colleagues to deal effectively with such fractures.MethodsClinical and epidemiological parameters were reviewed retrospectively in 29 patients with tibial tubercle avulsion fracture that was treated in our hospital in the past 7 years.ResultsTotally, 29 children with 30 tibial tubercle fractures were enrolled. They were all boys; the average age was 13.8 (12–15) years, and the average Body Mass Index (BMI) was 26.4 (19.2–34.3). Statistically, 41.4% of injuries occurred during jumping activities, and 1 (3.4%), 12 (41.4%) and 16 (55.2%) patients were injured bilaterally, on the right and left sides, respectively. The patients were classified into type I (4), II (3), III (13) and IV (10) fractures. Two patients (three knees) with fractures of type IV received close reduction and cast immobilization for 6 weeks. One patient with fracture of type IV underwent close reduction and was fixed with two cannulated screws. The remaining 26 patients underwent open reduction and were fixed with two or three cannulated screws. The average follow-up time was 38 (14–98) months; no complication was noted. Twenty-seven patients had an excellent outcome.ConclusionIn Chinese adolescents, the tibial tubercle avulsion fracture predisposes to boys with higher body weight; jumping is the most common cause of injury; treatments show satisfactory outcome regardless of fracture types.

An Uncommon Trauma: Hoffa's Fracture Associated with Tibial Avulsion Fracture of the Posterior Cruciate Ligament

2021 ◽  
Author(s):  
Bertan Cengiz ◽  
Sinan Karaoglu
Keyword(s):  
Posterior Cruciate Ligament ◽  
Avulsion Fracture ◽  
Cruciate Ligament ◽  
Easy Access ◽  
Lateral Condyle ◽  
Type I ◽  
Hoffa Fracture ◽  
Tibial Avulsion Fracture ◽  
Additional Stability ◽  
Buttress Plate

Abstract BackgroundSince Hoffa fractures are usually the result of high-energy injuries, many additional accompanying injuries have been described. This is the first paper representing the lateral condyle Hoffa fracture accompanying tibial avulsion fracture of the posterior cruciate ligament (PCL).Case PresentationA 42-years-old male presented with swelling and instability in his left knee after falling during parachute landing. He was diagnosed with simultaneous Letenneur Type I lateral condyle Hoffa fracture and tibial avulsion fracture of the PCL. He was operated on with a single posterior incision for both fractures. Multiple cannulated lag screws were used for the fixation of the Hoffa fracture, and a buttress plate was used for additional stability. PCL avulsion fracture was fixed with a cannulated screw with a washer. The patient was allowed for full-weight-bearing and range of motion at the sixth week after the operation. No complications occurred during follow-up.ConclusionCare should be taken in terms of additional injuries that may accompany Hoffa fractures. The posterior approach allows easy access to both fractures with a single incision. Using a buttress plate after the fixation of the Hoffa fracture with multiple lag screws provides additional stability.

A unique case of bilateral triceps avulsion fracture in a patient with pseudohypoparathyroidism

2019 ◽  
pp. 175857321987655
Author(s):  
Ali-Asgar Najefi ◽  
Peter Domos
Keyword(s):  
Avulsion Fracture ◽  
Unique Case ◽  
Double Row ◽  
Avulsion Fractures ◽  
Unique Method ◽  
Tendon Ruptures ◽  
Triceps Tendon ◽  
Double Row Repair ◽  
Suture Anchor Fixation ◽  
Anchor Fixation

Triceps tendon ruptures and avulsions are rare injuries and are often associated with systemic diseases. This paper illustrates the unique case of a 20-year-old female patient with pseudohypoparathyroidism, who sustained bilateral triceps avulsion fractures after a fall. She underwent suture anchor fixation, augmented with tension band suture as double row repair with excellent post-operative results. We describe the pathophysiology of this injury and the unique method of fixation, which can be an alternative effective method to repair these injuries.

scholarly journals Transient translocation of the cytoplasmic (endo) domain of a type I membrane glycoprotein into cellular membranes.

1993 ◽  
Vol 120 (4) ◽  
pp. 877-883 ◽  
Author(s):  
N Liu ◽  
D T Brown
Keyword(s):  
Amino Acids ◽  
Membrane Protein ◽  
Signal Sequence ◽  
Attachment Site ◽  
Integral Membrane Protein ◽  
Carboxyl Terminus ◽  
Type I ◽  
E2 Glycoprotein ◽  
Typical Type ◽  
Membrane Spanning

The E2 glycoprotein of the alphavirus Sindbis is a typical type I membrane protein with a single membrane spanning domain and a cytoplasmic tail (endo domain) containing 33 amino acids. The carboxyl terminal domain of the tail has been implicated as (a) attachment site for nucleocapsid protein, and (b) signal sequence for integration of the other alpha-virus membrane proteins 6K and E1. These two functions require that the carboxyl terminus be exposed in the cell cytoplasm (a) and exposed in the lumen of the endoplasmic reticulum (b). We have investigated the orientation of this glycoprotein domain with respect to cell membranes by substituting a tyrosine for the normally occurring serine, four amino acids upstream of the carboxyl terminus. Using radioiodination of this tyrosine as an indication of the exposure of the glycoprotein tail, we have provided evidence that this domain is initially translocated into a membrane and is returned to the cytoplasm after export from the ER. This is the first demonstration of such a transient translocation of a single domain of an integral membrane protein and this rearrangement explains some important aspects of alphavirus assembly.

scholarly journals Isolated PCL and ACL Avulsion Fractures of the Knee

2014 ◽  
Vol 2 (11_suppl3) ◽  
pp. 2325967114S0018
Author(s):  
Özgur Baysal ◽  
Engin Ecevız ◽  
Fevzi Saglam ◽  
Nurzat Elmalı
Keyword(s):  
Range Of Motion ◽  
Avulsion Fracture ◽  
Weight Bearing ◽  
Full Range ◽  
Imaging Modalities ◽  
Advanced Imaging ◽  
Avulsion Fractures ◽  
Pull Out ◽  
Partial Weight ◽  
Acl Avulsion

Objectives: Isolated combined PCL and ACL avulsion fractures is a rare condition. A 40 year old woman had both PCL and ACL avulsion fracture due to a car accident. These fractures often have a subtle appearance at conventional radiography. Advanced imaging modalities, particularly CT and MRI are helpful to diagnose correctly and define the extent of damage. The aim of the study was point out this rare injury. We diagnosed this patient who had both PCL and ACL avulsion fractures. In the literature only a few case have been reported. We think that these fractures may be missed in the Emergency Department. If a patient is brought to the ED with high-velocity trauma, careful evaluation of bone and soft tissues followed by advanced imaging modalities should be performed. Methods: The PCL avulsion fracture was fixed with a cancellous screw via posterior approach and ACL avulsion fracture was fixed with arthroscopically assisted pull-out sutures 10 days after the traumatic event. The knee was immobilized in 20° flexion. Isometric knee, hip and ankle exercises were started immediately. Six weeks later after the operation active range of motion exercises and partial weight-bearing were allowed. In the third month full weight bearing was allowed and full range of motion was achieved. Results: Both PCL and ACL avulsion fractures healed uneventfully. Conclusion: Although knee injuries are frequent, simultaneous PCL and ACL avulsion fractures are rare . The clinician should have a high index of suspicion for these injuries. Careful physical examination and radiological imaging, especially magnetic resonance imagination is helpful in the diagnosis. Early surgical repair and appropriate rehabilitation are the keys to a good outcome in these injuries.

Avulsion fracture of the coracoid process

2010 ◽  
Vol 28 (1) ◽  
pp. 13-13
Author(s):  
S. Sinha ◽  
J. P. St Mart ◽  
A. C. Campbell
Keyword(s):  
Avulsion Fracture ◽  
Coracoid Process
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