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American Journal of Orthopedics (Belle... Aug 2002
Topics: Acromion; Adult; Bone Transplantation; Humans; Ilium; Male; Shoulder Pain; Tomography, X-Ray Computed
PubMed: 12216968
DOI: No ID Found -
Rheumatology (Oxford, England) Oct 2000
Topics: Acromion; Adolescent; Bone Diseases; Female; Humans; Inflammation; Radiography; Radionuclide Imaging
PubMed: 11035147
DOI: 10.1093/rheumatology/39.10.1164 -
BMC Musculoskeletal Disorders Sep 2014Stress fractures of the base of the acromion are rare and tend to progress well when conservatively treated. The need for surgery due to this type of fracture has only...
BACKGROUND
Stress fractures of the base of the acromion are rare and tend to progress well when conservatively treated. The need for surgery due to this type of fracture has only been reported in two case reports.
CASE PRESENTATION
A 39-year-old patient, manual laborer, with a stress fracture at the base of the acromion that required surgical treatment due to persistent symptoms and consolidation failure.
CONCLUSION
We described a new mechanism of injury for stress fractures of the base of the acromion. After the failure of conservative treatment, the patient exhibited good results with osteosynthesis with a plate and screws, with no need for a bone graft.
Topics: Acromion; Adult; Fractures, Stress; Humans; Male
PubMed: 25214395
DOI: 10.1186/1471-2474-15-302 -
Clinical Rheumatology Jan 2024The suprascapular notch lies in the superior border of the scapula and is a passageway for the suprascapular nerve that is sensory to the shoulder joint. Suprascapular...
INTRODUCTION
The suprascapular notch lies in the superior border of the scapula and is a passageway for the suprascapular nerve that is sensory to the shoulder joint. Suprascapular nerve block involves injection of local anaesthetic into the suprascapular notch, either ultrasound guided or blind, using the spine of scapula and/or the medial border of the acromion as surface landmarks.
AIM
To investigate the anatomic variations that exist between the distance of the notch from the spine of scapula and acromion.
METHOD
Ninety-two dry scapulae were measured with a digital calliper for their length of the spine, distance between the midpoint of the spine and base of the suprascapular notch and distance between the medial border of the acromion and the base of the suprascapular notch. These measurements were compared for variations in the scapular bony landmarks, the spine and the acromion to determine the site for the injection.
RESULTS
Measurement reliability was assessed by intraclass correlation, Cronbach's alpha being 0.99, 0.97 and 0.91 for length of spine, distance from spine and distance from acromion respectively. The distance from the acromion had less variation in measurement (3.73 ± 0.42 cm) but a flatter distribution when compared to distance from the spine of the scapula (3.32 ± 0.39 cm).
CONCLUSION
Length of the spine of the scapula appeared not to influence either distance from the acromion or distance from the spine of scapula. There is potential for greater variability in placement of nerve blocks that use acromion as the bony reference. Key Points • Dry scapular measurement using electronic Vernier callipers is accurate (0.91-0.97). • There is potential for greater variability in placement of blind nerve blocks that use acromion as the bony reference to locate the suprascapular notch.
Topics: Humans; Acromion; Reproducibility of Results; Scapula; Shoulder; Shoulder Joint
PubMed: 37935986
DOI: 10.1007/s10067-023-06807-1 -
Arthroscopy : the Journal of... Nov 2022Assessment on whether radiographic parameters of the acromion measured in radiographs change significantly after anterolateral acromioplasty.
PURPOSE
Assessment on whether radiographic parameters of the acromion measured in radiographs change significantly after anterolateral acromioplasty.
METHODS
This retrospective study included patients that underwent an arthroscopic anterolateral acromioplasty between January 2014 and September 2020. n = 435 subjects with high-quality preoperative and postoperative radiographs according to Suter-Henninger criteria were included in the final assessment. All measurements were independently performed by the first and second author in a blinded fashion using dicomPACS software: acromion index (AI), critical shoulder angle (CSA), lateral acromial angle (LAA), beta angle, acromio-humeral distance (AHD), Aoki angle, frontal supraspinatus outlet angle (FSOW), and acromion type, according to Bigliani. SPSS software was used for statistical analysis.
RESULTS
The beta angle and the CSA did not significantly change after operation (alpha power 0.32 and 0.11, respectively). In a subgroup analysis of patients with a pathological CSA >35° (n = 194), the CSA changed from 38.62 (range: 35.08-47.52, SD 2.83) to 38.04 (range: 29.18-48.12, SD 3.77) postoperatively (P = .028) (Fig 8). All other parameters changed significantly after operation (AI, AHD, FSOW, and Aoki; P = .001, LAA; P = .039) (Fig. 9). The interobserver and intraobserver reliability was good to excellent in the majority of measured values. Mean patient age was 59.2 years (range: 18.1-87.1; SD 11.3), mean height was 1.73 meters (range: 1,50-1.98, SD 0.09), mean weight was 80.2 kg (range: 37.0-133.0, SD 16.68), and mean body mass index was 26.6 (range: 0.0-46.1, SD 4.73).
CONCLUSION
Anterolateral acromioplasty producing a flat acromion undersurface did not result in a significant change of the CSA in the study population. Pathological preoperative CSA values of >35° were significantly reduced but not to normal values, but only by a small amount that puts the clinical relevance into question.
LEVEL OF EVIDENCE
IV, diagnostic study, case series.
Topics: Humans; Adolescent; Young Adult; Adult; Middle Aged; Aged; Aged, 80 and over; Acromion; Shoulder; Rotator Cuff Injuries; Retrospective Studies; Reproducibility of Results; Shoulder Joint
PubMed: 35777676
DOI: 10.1016/j.arthro.2022.06.018 -
The Journal of the American Academy of... Jan 2006Os acromiale, the joining of the acromion to the scapular spine by fibrocartilaginous tissue rather than bone, is an anatomic variant that has been reported in... (Review)
Review
Os acromiale, the joining of the acromion to the scapular spine by fibrocartilaginous tissue rather than bone, is an anatomic variant that has been reported in approximately 8% of the population worldwide. It is more common in blacks and males than in whites and females. Although it is often an incidental finding, os acromiale has been identified as a contributor to shoulder impingement symptoms and rotator cuff tears. When nonsurgical management of a symptomatic os acromiale fails to relieve symptoms, surgical intervention is considered. Options include os acromiale excision, open reduction and internal fixation, and arthroscopic decompression. Excision usually is reserved for small to midsized fragments (preacromion) or after failed open reduction and internal fixation. Persistent deltoid dysfunction may result from excision of a large os acromiale. Open reduction and internal fixation preserves large fragments while maintaining deltoid function. Cannulated screw fixation has been shown to result in good union rates. Arthroscopic techniques have shown mixed results when used for treating impingement secondary to an unstable os acromiale. Associated rotator cuff tears may be addressed arthroscopically or through an open transacromial approach, followed by open reduction and internal fixation of the os acromiale.
Topics: Acromion; Female; Humans; Male; Musculoskeletal Abnormalities; Shoulder Joint
PubMed: 16394163
DOI: 10.5435/00124635-200601000-00004 -
The Journal of Trauma Mar 1983Fractures of the acromion are rare. Conservative therapy in the majority of cases results in return to full function of the shoulder. Occasionally, however, a painful...
Fractures of the acromion are rare. Conservative therapy in the majority of cases results in return to full function of the shoulder. Occasionally, however, a painful pseudoarthrosis will develop and surgical care is required. The American literature reports several cases of acromial fracture but has not specifically addressed the treatment of pseudoarthrosis with open reduction and internal fixation. We report such a case and review the American and European literature.
Topics: Acromion; Fracture Fixation, Internal; Fractures, Bone; Humans; Male; Middle Aged; Pseudarthrosis; Scapula
PubMed: 6834449
DOI: 10.1097/00005373-198303000-00014 -
BioMed Research International 2018The acromion is a small section of the scapula which extends anteriorly from the spine of the scapula and the acromial angle (AA) is a prominent bony point at the...
The acromion is a small section of the scapula which extends anteriorly from the spine of the scapula and the acromial angle (AA) is a prominent bony point at the junction of the lateral border of the acromion and the spine of the shoulder blade. As is well known, the morphology of the acromion and the acromial angle are important as their anatomical variation may contribute to shoulder pathologies. However, few people have studied the morphology and the association between the acromion and the acromial angle. The study explores the acromion and the acromial angle in the anatomical morphology and the association, providing an anatomical basis for clinical diagnosis and treatment. A total of 292 dry, intact scapulae (152 right, 140 left) were used in the study. Three types of the acromion were already measured, type I(flat shape), type II (curved shape), and type III (hooked shape), respectively. Three types of the acromial angles were also measured in this study, C shape, L shape, and Double Angle shape. The research result shows that C shape and L shape were the most common, while Double Angle shape was the least common. C shape was often related to type I (flat shape) and L shape was often related to type II (curved shape). The presented data provides precise and well-sorted information about the acromion and the acromial angle variation in Chinese population, contributing to diagnosis and treating in shoulder pathology.
Topics: Acromion; Asian People; Biomechanical Phenomena; Humans; Scapula
PubMed: 30534558
DOI: 10.1155/2018/3125715 -
Surgical and Radiologic Anatomy : SRA Apr 2019Although acromial morphology is classified as flat, curved, and hooked, whether the morphology is primary or acquired is debated. There have been no investigations on...
BACKGROUND
Although acromial morphology is classified as flat, curved, and hooked, whether the morphology is primary or acquired is debated. There have been no investigations on the effect of acromial spurs on acromial morphology. This study therefore aimed to evaluate acromial morphology in relation to spur formation at the anterior edge of the acromion.
MATERIALS AND METHODS
Acromial morphology was investigated in 40 scapulae taken from 20 cadavers (10 male and 10 female), with a median age of 82 years (range 62-97 years). Ink prints of the anteroposterior aspect of the acromion were used to evaluate acromial slope angle and curvature height in relation to spur incidence, length, and shape at the anterior edge of the acromion.
RESULTS
Differences were observed in acromial morphology and acromial curvature in relation to acromial spurs (incidence, size, and shape). A hooked acromion was observed as a primary structure in 25% of specimens, which increased to 43% when acromial spurs were involved. No differences were observed in relation to sex or side, while a significant correlation was observed between acromial curvature and the age of the specimens.
CONCLUSION
Acromial spurs increase acromial curvature and therefore change acromion morphology. Nevertheless, it is concluded that a hooked acromion occurs as a primary formed structure.
LEVEL OF EVIDENCE
Basic science study, anatomy, cadaver dissection.
Topics: Acromion; Aged; Aged, 80 and over; Cadaver; Female; Humans; Male; Middle Aged
PubMed: 30483867
DOI: 10.1007/s00276-018-2141-y -
Radiology May 1993An association between the morphology of the acromion and the occurrence of rotator cuff tear (RCT) has been suggested by findings at both pathologic examination and...
An association between the morphology of the acromion and the occurrence of rotator cuff tear (RCT) has been suggested by findings at both pathologic examination and routine radiography. As a tomographic technique, magnetic resonance (MR) assessment of acromial shape may be more accurate than routine radiography. The authors studied acromial morphology on sagittal oblique MR images of a control population (47 shoulders), of patients with isolated impingement (30 shoulders), and of patients with full-thickness RCTs (34 shoulders) to assess the association of acromial shape with disorders of the rotator cuff. Acromions were classified as flat (type 1), smoothly curved (type 2), or hooked (type 3). Data were collected by two observers, blinded to clinical and surgical information, who acted in consensus. Patients with RCT had a significantly increased prevalence of type 3 acromions compared with control patients (62% vs 13%, P < .001). Type 3 acromions tended to be more prevalent in the group with impingement (30%, P = .17). There was no significant difference in the distribution of acromion types among control patients with respect to age or gender.
Topics: Acromion; Adolescent; Adult; Aged; Congenital Abnormalities; Female; Humans; Magnetic Resonance Imaging; Male; Middle Aged; Pain; Shoulder Joint
PubMed: 8475294
DOI: 10.1148/radiology.187.2.8475294