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The Journal of Bone and Joint Surgery.... Jan 1995
Review
Topics: Acromion; Adult; Female; Fractures, Stress; Golf; Humans
PubMed: 7822376
DOI: No ID Found -
Journal of Orthopaedic Trauma 1998We report a case involving combined acromion fracture and posterior glenohumeral dislocation. To our knowledge, this combination of injuries has not been reported...
We report a case involving combined acromion fracture and posterior glenohumeral dislocation. To our knowledge, this combination of injuries has not been reported previously in the literature. In our case, the shoulder dislocation was initially missed. The utility of additional radiographic views to detect this type of injury is emphasized. The mechanism of injury, course of treatment, and clinical outcome are presented.
Topics: Acromion; Adult; Humans; Male; Radiography; Shoulder Dislocation
PubMed: 9781779
DOI: 10.1097/00005131-199809000-00018 -
Acta Orthopaedica Belgica Dec 2020Os acromiale is due to a defect of fusion of the different ossification centers of the acromion. It is a common cause of shoulder pain that should be evoked in the... (Review)
Review
Os acromiale is due to a defect of fusion of the different ossification centers of the acromion. It is a common cause of shoulder pain that should be evoked in the differential diagnosis of the sub-acromial conflict. CT scan or magnetic resonance are therefore often helpful to confirm the diagnosis. Conservative treatment is the first-line management but various surgical techniques are described in case of initial treatment failure. In this context, new arthroscopic techniques offer encouraging results. This article overviews the key points of pathophysiology, clinical manifestations, para-clinical studies and treatment of os acromiale.
Topics: Acromion; Conservative Treatment; Diagnosis, Differential; Humans; Shoulder Pain; Tomography, X-Ray Computed
PubMed: 33861919
DOI: No ID Found -
Arthroscopy : the Journal of... Apr 2016Reduction of critical shoulder angle to less than 35° is potentially useful to prevent progression of rotator cuff tear or to protect cuff repair from re-tear. Lateral...
Reduction of critical shoulder angle to less than 35° is potentially useful to prevent progression of rotator cuff tear or to protect cuff repair from re-tear. Lateral acromioplasty is an effective procedure to reduce the critical shoulder angle without violating the acromial deltoid origin.
Topics: Acromion; Arthrodesis; Arthroplasty; Humans; Rotator Cuff; Shoulder Joint
PubMed: 27039680
DOI: 10.1016/j.arthro.2016.01.008 -
Journal of Shoulder and Elbow Surgery 1997We studied 37 fractures lateral to the spinoglenoidal notch to evaluate the validity of collectively handling these fractures as an acromion fracture and to ascertain...
We studied 37 fractures lateral to the spinoglenoidal notch to evaluate the validity of collectively handling these fractures as an acromion fracture and to ascertain the mechanism of injury. We divided them into three groups according to the location of the fracture line. Fracture of the anatomic acromion or the extremely lateral scapular spine (groups I and II, 28 fractures) was frequently associated with fracture of the coracoid base, acromioclavicular joint injury, or both. The mechanism of injury in most cases was presumed to be indirect force brought to bear on the shoulder from the lateral direction. Fracture descending to the spinoglenoidal notch (group III, nine fractures) was seldom associated with other shoulder injuries, and surgery was rarely needed. The mechanism was assumed to be direct force brought to bear on the shoulder from the posterior direction. Therefore fractures of the anatomic acromion and the extremely lateral scapular spine may be managed collectively. However, fracture descending to the spinoglenoidal notch should be managed separately. We advocate that these fractures should be classified into two types in terms of clinical consideration: type I fractures, comprising those of the anatomic acromion and the extremely lateral scapular spine, and type II fractures, located in the more medial spine and descending to the spinoglenoidal notch.
Topics: Acromion; Adolescent; Adult; Aged; Female; Fractures, Bone; Humans; Male; Middle Aged
PubMed: 9437604
DOI: 10.1016/s1058-2746(97)90087-2 -
Clinical Radiology Aug 1994Avulsion fractures of the acromion [corrected] are described in 10 patients with severe tetanus neonatorum. Typically bilateral and invariably contemporaneous, they...
Avulsion fractures of the acromion [corrected] are described in 10 patients with severe tetanus neonatorum. Typically bilateral and invariably contemporaneous, they result from isometric contraction. Forced abduction of the arm against adductor resistance leads to avulsion of that segment of the acromium where the multipenate fibres of the deltoid muscle originate. To our knowledge this unique and ominous orthopaedic complication of severe neonatal tetanus has not been documented previously.
Topics: Acromion; Fractures, Spontaneous; Humans; Infant, Newborn; Prospective Studies; Radiography; Tetanus
PubMed: 7955871
DOI: 10.1016/s0009-9260(05)82938-1 -
Folia Morphologica Nov 2008The purpose of this study was to record the basic morphometric values of the acromion. Forty-four pairs of dried scapulas were reviewed. Acromial shape was evaluated in...
The purpose of this study was to record the basic morphometric values of the acromion. Forty-four pairs of dried scapulas were reviewed. Acromial shape was evaluated in relation to sex, symmetry and presence of subacromial enthesophytes and classified according to Bigliani with the following results: type I (flat): 26.1%, type II (curved): 55.6% and type III (hooked): 18.1%. There was a greater percentage of type III in men (56.2% vs. 43.7%) and type I in women (56.5% vs. 43.4%). Acromial morphology was symmetric in 29 acromia (65.9%). Enthesophytes were most common in type III (75%). A rough inferior surface of the acromion was most frequently found in type III (81.2%). Nine other scapular osteological parameters were also measured. Many differences were noted between male and female scapulae. The great variety of morphological features is assumed to be related to rotator cuff pathology and other shoulder impairments.
Topics: Acromion; Female; Humans; Male; Scapula; Sex Characteristics; Shoulder Impingement Syndrome
PubMed: 19085865
DOI: No ID Found -
Yonsei Medical Journal Dec 1992A study group composed of 11 shoulders in 10 patients underwent arthroscopic subacromial decompression for impingement syndrome. There were no biceps tendon ruptures,...
A study group composed of 11 shoulders in 10 patients underwent arthroscopic subacromial decompression for impingement syndrome. There were no biceps tendon ruptures, acromioclavicular arthritis or glenohumeral instability. Eight men and two women ranging in age from 17 to 65 years (mean age 38.7) with dominant arm involvement in 9/10 were evaluated for an average follow-up of 19.4 months (range 12-26) postoperatively. Based on the University of California at Los Angeles shoulder rating scale, nine (82%) shoulders had satisfactory results and the remaining two (18%) had unsatisfactory results. This is a preliminary report of our early experience in this rather new method of treatment, but the results are encouragingly good.
Topics: Acromion; Adolescent; Adult; Aged; Arthroscopy; Evaluation Studies as Topic; Female; Humans; Male; Middle Aged; Movement; Pain; Postoperative Period; Radiography; Retrospective Studies; Shoulder
PubMed: 1309016
DOI: 10.3349/ymj.1992.33.4.357 -
Journal of Shoulder and Elbow Surgery Jan 2019Anatomic factors associated with static posterior translation of the humeral head with or without glenohumeral osteoarthritis are unknown. We tested the hypothesis that...
BACKGROUND
Anatomic factors associated with static posterior translation of the humeral head with or without glenohumeral osteoarthritis are unknown. We tested the hypothesis that there is an association between glenoid wear, glenoid version, and/or anteroposterior acromial tilt.
METHODS
Ninety-nine patients with glenohumeral joint degeneration involving advanced glenoid cartilage wear and/or rotator cuff disease scheduled for anatomic or reverse total shoulder replacement underwent standardized conventional radiographic and computed tomographic shoulder imaging. Measurements included glenoid version, humeral torsion, posterior acromial slope, and critical shoulder angle. The glenoid shape was classified according to Walch et al, and the integrity of the rotator cuff was assessed.
RESULTS
Patients with glenoid type B2 or C had a median of 4° more glenoid retroversion (P = .022), a 5° less steep acromion (posterior acromial slope, 61° vs 56°; P = .004), and a higher combined score (glenoid version minus slope; odds ratio, 0.93 [95% confidence interval, 0.89-0.97]; P < .001; cutoff, -27°) than those with type A or B1. When the rotator cuff was torn, osteoarthritic changes were milder than when the cuff was intact (eg, P < .001 for supraspinatus).
CONCLUSION
The study's hypothesis that the bony anatomy of the scapula and in particular the acromion is correlated with the type of glenoid wear was confirmed. Both a more horizontal acromial orientation in the sagittal plane and increased posterior glenoid version are found in osteoarthritis of the shoulder associated with eccentric, posterior glenoid wear. Tears of the rotator cuff are significantly associated with concentric osteoarthritis of the glenoid.
Topics: Acromion; Adult; Aged; Arthroplasty, Replacement, Shoulder; Female; Humans; Male; Middle Aged; Osteoarthritis; Shoulder Joint; Tomography, X-Ray Computed
PubMed: 30177342
DOI: 10.1016/j.jse.2018.05.041 -
Journal of Shoulder and Elbow Surgery 1996Two hundred ten specimens (420 scapulas) from the Hamann-Todd Osteological Collection at the Cleveland Museum of Natural History were evaluated to determine the...
Two hundred ten specimens (420 scapulas) from the Hamann-Todd Osteological Collection at the Cleveland Museum of Natural History were evaluated to determine the influence of age on acromial morphologic condition. Equal numbers of specimens from female and male and black and white subjects were evaluated. The length, width, and anterior thickness of the acromion and the acromial facet of the acromioclavicular joint were measured with digital calipers, examined visually, and evaluated radiographically. Distribution of acromial morphologic types was type I, (flat) 32%, type II (curved), 42%, and type III (hooked), 26%. Analysis of the data revealed no consistent, statistically significant impact of age on morphologic condition. The incidence of os acromiale was 8% (17 of 210), with 7 (41%) of 17 specimens having bilateral involvement. Mean acromial dimensions in men were length = 48.5 mm, width = 19.5 mm, and anterior thickness = 7.7 mm. Mean dimensions in women were length = 40.6 mm, width = 18.4 mm, and thickness = 6.7 mm. Multiple regression analysis revealed no significant changes in any dimension with increasing age. Observation of the acromial facet of the acromioclavicular joint revealed 49% were medially inclined, 48% were vertically inclined, and only 3% were laterally inclined in relationship to the sagittal plane. A statistically significant age-related increase in degenerative changes was noted. Anterior acromial spur formation as determined by visual inspection of the acromion was observed in 7% of specimens from patients younger than 50 years compared with 30% of specimens from patients older than 50 years (p < 0.05). Spur formation on the anterior acromion is an age-dependent process. Acromial morphologic condition as evaluated by outlet radiographs is independent of age and appears to be a primary anatomic characteristic. The variations seen in acromial morphologic condition are not acquired from age-related changes and spur formation and thus contribute to impingement disease independent of and in addition to age-related processes.
Topics: Acromioclavicular Joint; Acromion; Adult; Age Factors; Aged; Aging; Female; Humans; Male; Middle Aged; Radiography; Regression Analysis
PubMed: 8919436
DOI: 10.1016/s1058-2746(96)80024-3