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Shoulder and Clavicle Injuries
Research Guide
What is Shoulder and Clavicle Injuries?
Shoulder and clavicle injuries encompass clavicle fractures and acromioclavicular joint injuries, along with associated shoulder pathologies such as rotator cuff ruptures, proximal humeral fractures, and impingement syndromes, studied through their epidemiology, nonoperative and surgical treatments, and complications.
This field includes 47,184 papers on the epidemiology, nonoperative and surgical treatment, and complications of clavicle fractures and acromioclavicular joint injuries. Key areas cover nonunion risk, biomechanical evaluations, anatomical reconstructions, and midshaft fractures. Research also addresses rotator cuff tears, proximal humeral fractures, and impingement syndromes through classification systems and treatment outcomes.
Topic Hierarchy
Research Sub-Topics
Clavicle Fracture Epidemiology
This sub-topic analyzes incidence rates, risk factors, and injury mechanisms from trauma registries and population cohorts. Researchers stratify by age, mechanism, and displacement patterns.
Nonoperative Treatment of Clavicle Fractures
This sub-topic evaluates sling immobilization outcomes, union rates, and functional recovery via RCTs and meta-analyses. Researchers compare conservative vs. surgical indications.
Surgical Management of Midshaft Clavicle Fractures
This sub-topic compares plating techniques, intramedullary nailing, and fixation stability using biomechanical tests and clinical trials. Researchers address nonunion and malunion risks.
Acromioclavicular Joint Injury Classification
This sub-topic critiques Rockwood classification reliability and imaging correlates using MRI and stress views. Researchers propose refinements for Types III-VI injuries.
Coracoclavicular Ligament Reconstruction
This sub-topic reviews anatomic techniques using grafts, TightRope, and suture buttons for chronic AC dislocations. Researchers report return-to-sport rates and complications.
Why It Matters
Shoulder and clavicle injuries impact clinical practice by guiding treatment choices for common orthopedic conditions. Constant and Murley (1987) in "A Clinical Method of Functional Assessment of the Shoulder" provide a standardized method applicable across diagnostic variations, enabling consistent evaluation of shoulder function post-injury or surgery. Neer (1970) in "Displaced proximal humeral fractures. I. Classification and evaluation" classified injuries based on roentgenographic appearance and anatomy from 300 cases, improving surgical planning for proximal humeral fractures. Goutallier et al. (1994) in "Fatty muscle degeneration in cuff ruptures. Pre- and postoperative evaluation by CT scan" graded fatty degeneration in 63 rotator cuff repair patients, showing progression despite repair in 57 cases after 17.7 months, which informs prognosis and operative decisions. Galatz et al. (2004) reported high recurrent defect rates in arthroscopically repaired large rotator cuff tears despite pain relief, highlighting limitations in repair integrity.
Reading Guide
Where to Start
"A Clinical Method of Functional Assessment of the Shoulder" by Constant and Murley (1987) is the starting point for beginners, as it provides a practical, standardized tool for evaluating shoulder function across various injuries, essential for understanding outcomes in this field.
Key Papers Explained
Constant and Murley (1987) in "A Clinical Method of Functional Assessment of the Shoulder" establishes functional evaluation metrics used in later works. Neer (1970) in "Displaced proximal humeral fractures. I. Classification and evaluation" builds foundational classification for proximal humeral injuries from 300 cases. Goutallier et al. (1994) in "Fatty muscle degeneration in cuff ruptures. Pre- and postoperative evaluation by CT scan" extends this by quantifying muscle changes in 63 cuff rupture patients pre- and post-repair. Galatz et al. (2004) in "The Outcome and Repair Integrity of Completely Arthroscopically Repaired Large and Massive Rotator Cuff Tears" applies these concepts to arthroscopic repairs, revealing high retear rates. Marsh et al. (2007) in "Fracture and Dislocation Classification Compendium - 2007" provides a comprehensive system encompassing clavicle and shoulder fractures.
Paper Timeline
Most-cited paper highlighted in red. Papers ordered chronologically.
Advanced Directions
Current frontiers emphasize epidemiological trends and complication rates in clavicle fractures and acromioclavicular injuries, including nonunion risks and surgical optimizations. No recent preprints or news in the last 12 months indicate steady incorporation of established classifications like Neer (1970) and Marsh et al. (2007) into ongoing management protocols.
Papers at a Glance
| # | Paper | Year | Venue | Citations | Open Access |
|---|---|---|---|---|---|
| 1 | A Clinical Method of Functional Assessment of the Shoulder | 1987 | Clinical Orthopaedics ... | 5.2K | ✕ |
| 2 | Fatty muscle degeneration in cuff ruptures. Pre- and postopera... | 1994 | PubMed | 2.6K | ✕ |
| 3 | Fracture and Dislocation Classification Compendium - 2007 | 2007 | Journal of Orthopaedic... | 2.3K | ✕ |
| 4 | Rockwood and Green’s fractures in adults. | 1997 | Journal of Bone and Jo... | 2.1K | ✓ |
| 5 | The Outcome and Repair Integrity of Completely Arthroscopicall... | 2004 | Journal of Bone and Jo... | 2.1K | ✕ |
| 6 | Anterior Acromioplasty for the Chronic Impingement Syndrome in... | 1972 | Journal of Bone and Jo... | 2.1K | ✕ |
| 7 | Fatty Muscle Degeneration in Cuff Ruptures | 1994 | Clinical Orthopaedics ... | 2.0K | ✕ |
| 8 | Displaced proximal humeral fractures. I. Classification and ev... | 1970 | PubMed | 2.0K | ✕ |
| 9 | Displaced Proximal Humeral Fractures | 1970 | Journal of Bone and Jo... | 1.9K | ✕ |
| 10 | Anterior Acromioplasty for the Chronic Impingement Syndrome in... | 2013 | — | 1.9K | ✕ |
Frequently Asked Questions
What is the Constant-Murley score for shoulder assessment?
The Constant-Murley score, described in "A Clinical Method of Functional Assessment of the Shoulder" by Constant and Murley (1987), evaluates shoulder function irrespective of specific diagnostic or radiologic abnormalities. It records individual parameters of pain, activities of daily living, mobility, and strength. This method applies broadly to injuries including those of the shoulder and clavicle.
How is fatty degeneration assessed in rotator cuff ruptures?
Fatty degeneration in rotator cuff ruptures is graded in five stages using preoperative CT scans, as detailed by Goutallier et al. (1994) in "Fatty muscle degeneration in cuff ruptures. Pre- and postoperative evaluation by CT scan." In 63 patients, progression occurred postoperatively in many cases evaluated after 17.7 months via arthrography. This grading predicts repair outcomes.
What classification is used for proximal humeral fractures?
Neer (1970) in "Displaced proximal humeral fractures. I. Classification and evaluation" proposed a classification for displaced proximal humeral fractures and dislocations based on roentgenographic appearance and anatomy from 300 cases. Existing systems were inadequate for the lesions observed. The system categorizes injuries to guide treatment.
What are outcomes of arthroscopic repair for massive rotator cuff tears?
Galatz et al. (2004) in "The Outcome and Repair Integrity of Completely Arthroscopically Repaired Large and Massive Rotator Cuff Tears" found high recurrent defect rates at minimum 12 months despite excellent pain relief and improved daily activities. This indicates limitations in achieving durable tendon integrity arthroscopically. Patients still report functional gains.
What is the role of anterior acromioplasty in shoulder impingement?
Neer (1972) in "Anterior Acromioplasty for the Chronic Impingement Syndrome in the Shoulder" identified impingement by the coraco-acromial ligament and anterior acromion on the rotator cuff as causing shoulder disability. A proliferative spur and ridge on the anterior acromion contributes to this syndrome. Anterior acromioplasty addresses this pathology.
What comprehensive classification exists for fractures including clavicle?
Marsh et al. (2007) in "Fracture and Dislocation Classification Compendium - 2007" republished the Orthopaedic Trauma Association's classification, adopting elements from the Comprehensive Classification of Long Bones. It covers fractures and dislocations, applicable to clavicle and shoulder injuries. This system standardizes description for treatment and research.
Open Research Questions
- ? How can nonunion risk in midshaft clavicle fractures be minimized through nonoperative versus surgical management?
- ? What biomechanical factors optimize coracoclavicular ligament reconstruction outcomes?
- ? Which patient factors best predict progression of fatty degeneration in rotator cuff tears post-repair?
- ? How do classification systems for acromioclavicular joint injuries correlate with long-term functional outcomes?
- ? What anatomical reconstruction techniques reduce complications in displaced clavicle fractures?
Recent Trends
The field maintains 47,184 papers with no specified 5-year growth rate.
Established works like Constant and Murley with 5189 citations and Goutallier et al. (1994) with 2558 citations continue to dominate.
1987Absence of recent preprints or news in the last 12 months suggests reliance on foundational classifications and outcome studies such as Neer and Galatz et al. (2004).
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