Cartilage decisively shapes the glenoid concavity and contributes significantly to shoulder stability
© 2022. The Author(s)..
PURPOSE: Glenohumeral joint injuries frequently result in shoulder instability. However, the biomechanical effect of cartilage loss on shoulder stability remains unknown. The aim of the current study was to investigate biomechanically the effect of two severity stages of cartilage loss in different dislocation directions on shoulder stability.
METHODS: Joint dislocation was provoked in 11 human cadaveric glenoids for 7 different directions between 3 o'clock (anterior) and 9 o'clock (posterior). Shoulder stability ratio (SSR) and concavity gradient were assessed in three states: intact, 3 mm and 6 mm simulated cartilage loss. The influence of cartilage loss on SSR and concavity gradient was statistically evaluated.
RESULTS: Both SSR and concavity gradient decreased significantly between intact state and 6 mm cartilage loss in every dislocation direction (p ≤ 0.038), except concavity gradient in 4 o'clock direction. Thereby, anterior-inferior dislocation directions were associated with the highest decrease in both SSR and concavity gradient of up to 59.0% and 49.4%, respectively, being significantly bigger for SSR compared with all other dislocation directions (p ≤ 0.040). Correlations between concavity gradient and SSR for pooled dislocation directions were significant in each separate specimen's state (p < 0.001).
CONCLUSION: From a biomechanical perspective, articular cartilage of the glenoid contributes significantly to the concavity gradient, correlating strongly with the associated loss in glenohumeral joint stability. The biggest effect of cartilage loss is observed in the most frequently occurring anterior-inferior dislocation directions, suggesting that surgical interventions to restore cartilage's surface and concavity should be considered for recurrent shoulder dislocations in presence of cartilage loss.
| Medienart: |
E-Artikel |
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| Erscheinungsjahr: |
2022 |
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| Erschienen: |
2022 |
| Enthalten in: |
Zur Gesamtaufnahme - volume:30 |
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| Enthalten in: |
Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA - 30(2022), 11 vom: 18. Nov., Seite 3626-3633 |
| Sprache: |
Englisch |
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| Beteiligte Personen: |
Souleiman, F [VerfasserIn] |
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| Links: |
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| Themen: |
Cartilage |
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| Anmerkungen: |
Date Completed 18.10.2022 Date Revised 19.10.2022 published: Print-Electronic Citation Status MEDLINE |
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| doi: |
10.1007/s00167-022-06968-7 |
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| funding: |
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| Förderinstitution / Projekttitel: |
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| PPN (Katalog-ID): |
NLM339641924 |
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| 245 | 1 | 0 | |a Cartilage decisively shapes the glenoid concavity and contributes significantly to shoulder stability |
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| 500 | |a published: Print-Electronic | ||
| 500 | |a Citation Status MEDLINE | ||
| 520 | |a © 2022. The Author(s). | ||
| 520 | |a PURPOSE: Glenohumeral joint injuries frequently result in shoulder instability. However, the biomechanical effect of cartilage loss on shoulder stability remains unknown. The aim of the current study was to investigate biomechanically the effect of two severity stages of cartilage loss in different dislocation directions on shoulder stability | ||
| 520 | |a METHODS: Joint dislocation was provoked in 11 human cadaveric glenoids for 7 different directions between 3 o'clock (anterior) and 9 o'clock (posterior). Shoulder stability ratio (SSR) and concavity gradient were assessed in three states: intact, 3 mm and 6 mm simulated cartilage loss. The influence of cartilage loss on SSR and concavity gradient was statistically evaluated | ||
| 520 | |a RESULTS: Both SSR and concavity gradient decreased significantly between intact state and 6 mm cartilage loss in every dislocation direction (p ≤ 0.038), except concavity gradient in 4 o'clock direction. Thereby, anterior-inferior dislocation directions were associated with the highest decrease in both SSR and concavity gradient of up to 59.0% and 49.4%, respectively, being significantly bigger for SSR compared with all other dislocation directions (p ≤ 0.040). Correlations between concavity gradient and SSR for pooled dislocation directions were significant in each separate specimen's state (p < 0.001) | ||
| 520 | |a CONCLUSION: From a biomechanical perspective, articular cartilage of the glenoid contributes significantly to the concavity gradient, correlating strongly with the associated loss in glenohumeral joint stability. The biggest effect of cartilage loss is observed in the most frequently occurring anterior-inferior dislocation directions, suggesting that surgical interventions to restore cartilage's surface and concavity should be considered for recurrent shoulder dislocations in presence of cartilage loss | ||
| 650 | 4 | |a Journal Article | |
| 650 | 4 | |a Cartilage | |
| 650 | 4 | |a GLAD lesion | |
| 650 | 4 | |a Glenoid concavity | |
| 650 | 4 | |a Shoulder dislocation | |
| 650 | 4 | |a Shoulder instability | |
| 650 | 4 | |a Shoulder stability ratio | |
| 700 | 1 | |a Zderic, I |e verfasserin |4 aut | |
| 700 | 1 | |a Pastor, T |e verfasserin |4 aut | |
| 700 | 1 | |a Varga, P |e verfasserin |4 aut | |
| 700 | 1 | |a Helfen, T |e verfasserin |4 aut | |
| 700 | 1 | |a Richards, G |e verfasserin |4 aut | |
| 700 | 1 | |a Gueorguiev, B |e verfasserin |4 aut | |
| 700 | 1 | |a Theopold, J |e verfasserin |4 aut | |
| 700 | 1 | |a Osterhoff, G |e verfasserin |4 aut | |
| 700 | 1 | |a Hepp, P |e verfasserin |4 aut | |
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