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Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA
Jul, 2021;29 (7): 2039-2045.

Young men in sports are at highest risk of acromioclavicular joint injuries: a prospective cohort study.

Stein Arve Skjaker, Martine Enger, Lars Engebretsen, Jens Ivar Brox, Berte Bøe
Author Information
  1. Stein Arve Skjaker: Division of Orthopaedic Surgery, Oslo University Hospital, Nydalen, Pb 4950, 0424, Oslo, Norway. steskj@ous-hf.no. ORCID
  2. Martine Enger: Division of Orthopaedic Surgery, Oslo University Hospital, Nydalen, Pb 4950, 0424, Oslo, Norway.
  3. Lars Engebretsen: Division of Orthopaedic Surgery, Oslo University Hospital, Nydalen, Pb 4950, 0424, Oslo, Norway.
  4. Jens Ivar Brox: Institute of Clinical Medicine, University of Oslo, Oslo, Norway.
  5. Berte Bøe: Division of Orthopaedic Surgery, Oslo University Hospital, Nydalen, Pb 4950, 0424, Oslo, Norway.
PMID: 32270265 DOI: 10.1007/s00167-020-05958-x

Abstract

PURPOSE: To study the incidence of acromioclavicular joint injuries in a general population.
METHODS: All acute shoulder injuries admitted to an orthopaedic emergency department were registered prospectively, using electronic patient records and a patient-reported questionnaire. The regional area was the city of Oslo with 632,990 inhabitants. Patients with symptoms from the acromioclavicular joint without fracture were registered as a dislocation (type II-VI) if the radiologist described widening of the joint space or coracoclavicular distance on standard anteroposterior radiographs. Patients without such findings were diagnosed as sprains (type I).
RESULTS: Acromioclavicular joint injuries constituted 11% of all shoulder injuries (287 of 2650). The incidence was 45 per 10 person-years (95% confidence interval [CI] 40-51). 196 (68%) were diagnosed as sprains and 91 (32%) as dislocations. Median age of all acromioclavicular joint injuries was 32 years (interquartile range 24-44), and 82% were men. Thirty percent of all acromioclavicular joint injuries were registered in men in their twenties. Sports injuries accounted for 53%, compared to 27% in other shoulder injuries [OR 3.1 (95% CI 2.4-4.0; p < 0.001)]. The most common sports associated with acromioclavicular joint injuries were football (24%), cycling (16%), martial arts (11%), alpine skiing and snowboarding (both 9%), and ice hockey (6%).
CONCLUSION: Our study suggests that in the general population, one in ten shoulder injuries involves the acromioclavicular joint and young men in sports are at highest risk. A prognostic level II cohort study.

Keywords

ACJ classification ACJ dislocation ACJ instability ACJ joint ACJ sprain Acromioclavicular joint Acromioclavicular joint dislocation Acromioclavicular joint instability Acromioclavicular joint sprain Shoulder injury Sport injury

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MeSH Term

Acromioclavicular Joint
Adult
Athletic Injuries
Cohort Studies
Female
Humans
Incidence
Joint Dislocations
Joint Instability
Male
Norway
Prospective Studies
Radiography
Sex Factors
Shoulder Injuries
Sprains and Strains
Surveys and Questionnaires
Young Adult
Journal Article
Article has an altmetric score of 9

Word Cloud

Created with Highcharts 10.0.0jointinjuriesacromioclavicularAcromioclavicularACJstudyshouldermenregistereddislocationsportsincidencegeneralpopulationPatientswithouttypediagnosedsprains11%95%0highestriskcohortinstabilityspraininjuryPURPOSE:METHODS:acuteadmittedorthopaedicemergencydepartmentprospectivelyusingelectronicpatientrecordspatient-reportedquestionnaireregionalareacityOslo632990inhabitantssymptomsfractureII-VIradiologistdescribedwideningspacecoracoclaviculardistancestandardanteroposteriorradiographsfindingsRESULTS:constituted287265045per10person-yearsconfidenceinterval[CI]40-5119668%9132%dislocationsMedianage32yearsinterquartilerange24-4482%ThirtypercenttwentiesSportsaccounted53%compared27%[OR31CI24-4p<001]commonassociatedfootball24%cycling16%martialartsalpineskiingsnowboarding9%icehockey6%CONCLUSION:suggestsoneteninvolvesyoungprognosticlevelIIYounginjuries:prospectiveclassificationShoulderSport

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