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Arthritis of left glenohumeral joint — Clinical Guidelines

Overview

Arthritis of the left glenohumeral joint, often secondary to osteoarthritis (OA), is a prevalent condition affecting adults typically between the ages of 60 and 80 years 1. This degenerative joint disease leads to significant pain, reduced range of motion, and functional impairment, significantly impacting quality of life. Total shoulder arthroplasty (TSA) has emerged as a definitive treatment option, with utilization increasing by 300% to 400% over the past two decades 1. Despite its efficacy, complications, particularly those involving the glenoid component, such as loosening and failure, necessitate careful patient selection and meticulous surgical technique 1 8. Understanding the nuances of diagnosis, management, and potential complications is crucial for optimal patient outcomes in day-to-day clinical practice.

Pathophysiology

The pathophysiology of glenohumeral arthritis involves progressive degeneration of articular cartilage, leading to joint space narrowing, osteophyte formation, and subchondral bone changes 1. At the molecular level, chronic inflammation triggers the release of cytokines and proteolytic enzymes, contributing to cartilage breakdown 1. Cellular changes include increased chondrocyte apoptosis and altered matrix metalloproteinase activity, further exacerbating cartilage degradation 1. These processes culminate in structural joint damage, causing mechanical instability and pain, which are hallmark symptoms of glenohumeral arthritis 1. The degenerative cascade not only affects the cartilage but also impacts the surrounding soft tissues, including the rotator cuff, leading to functional impairment and reduced shoulder mechanics 1 9.

Epidemiology

The incidence of glenohumeral arthritis increases with age, predominantly affecting individuals over 60 years, with a slight male predominance observed in some studies 1. Prevalence rates vary geographically but generally correlate with aging populations and lifestyle factors such as occupational demands and prior shoulder injuries 1. Trends indicate a rising incidence paralleling the increasing use of TSA, reflecting both population aging and advancements in surgical interventions 1. Specific risk factors include prior shoulder trauma, rotator cuff pathology, and genetic predispositions, though these vary widely among individuals 1.

Clinical Presentation

Patients with glenohumeral arthritis typically present with chronic shoulder pain, particularly exacerbated by activity, and a noticeable decrease in shoulder function 1. Common symptoms include stiffness, weakness, and a reduced range of motion, particularly in abduction and external rotation 1. Atypical presentations might include referred pain patterns or symptoms mimicking cervical spine disorders, necessitating careful clinical evaluation 1. Red-flag features include unexplained weight loss, night pain, or signs of systemic inflammatory response, which may suggest other underlying conditions requiring further investigation 1.

Diagnosis

The diagnostic approach for glenohumeral arthritis involves a comprehensive clinical assessment followed by imaging and, when necessary, arthroscopic evaluation 1. Key diagnostic criteria include:

Clinical Examination: Pain on palpation over the joint, crepitus, and limited range of motion 1.

Imaging Studies:

- X-rays: Presence of joint space narrowing, osteophytes, and subchondral sclerosis 1. - MRI: Detailed assessment of cartilage damage, bone marrow edema, and soft tissue involvement 1. - CT: Useful for evaluating bony structures and assessing glenoid morphology in complex cases 1.

Arthroscopy: Direct visualization of cartilage damage and intra-articular pathology, particularly valuable in surgical planning 1.

Differential Diagnosis:

Rotator Cuff Tears: Distinguished by specific tests like the Hawkins-Kennedy test and Empty Can test 1.

Adhesive Capsulitis: Characterized by a more uniform restriction of all shoulder movements 1.

Rheumatoid Arthritis: Presence of systemic symptoms and symmetrical joint involvement 1.

Management

Non-Surgical Management

Pharmacotherapy:

- Nonsteroidal Anti-Inflammatory Drugs (NSAIDs): For pain relief and inflammation reduction 1. - Corticosteroids: Intra-articular injections to alleviate acute symptoms 1.

Physical Therapy:

- Range of Motion Exercises: To maintain mobility and reduce stiffness 1. - Strengthening Exercises: Focusing on rotator cuff and scapular stabilizers 1.

Activity Modification: Avoiding exacerbating activities and incorporating assistive devices if necessary 1.

Surgical Management

Total Shoulder Arthroplasty (TSA):

- Indications: Severe pain and functional impairment unresponsive to conservative measures 1. - Types of Implants: - Metal-Backed (MB) Glenoid Components: Thickness ~7 mm, secured with screws and porous surfaces for bone ingrowth 1. - Cemented Polyethylene (PE) Glenoid Components: Thickness ~3-4 mm, fixed with pegs or keels requiring cement 1. - Complications: Focus on glenoid loosening, pain, and reduced range of motion 1 8.

Revision Surgery:

- Indications: Persistent pain, implant loosening, or failure 1 10. - Techniques: Use of structural allografts for severe glenoid bone loss, constrained hip-inspired implants for complex cases 1 10.

Contraindications

Severe Systemic Disease: Advanced cardiovascular or pulmonary conditions 1.

Infection: Active or recent infections in the shoulder region 1.

Poor Bone Quality: Insufficient bone stock for implant fixation 1.

Complications

Acute Complications:

- Infection: Requires immediate surgical intervention and prolonged antibiotic therapy 1. - Hemorrhage: Potential for significant blood loss, necessitating transfusion 1.

Long-Term Complications:

- Implant Loosening: Commonly affects the glenoid component, leading to revision surgery 1 8. - Periprosthetic Fractures: Particularly in osteoporotic patients 1. - Scapular Notching: With reverse shoulder arthroplasty, indicating excessive stress on the scapula 1 2.

Management Triggers:

Persistent Pain: Beyond postoperative expected recovery period 1.

Functional Decline: Significant reduction in activities of daily living 1.

Imaging Evidence: Radiographic signs of loosening or subsidence 1.

Prognosis & Follow-Up

The prognosis for patients undergoing TSA is generally favorable, with significant improvements in pain and function reported 1. Prognostic indicators include preoperative functional status, severity of arthritis, and adherence to postoperative rehabilitation 1. Recommended follow-up intervals typically include:

Immediate Postoperative: Within 2 weeks for wound inspection and early functional assessment 1.

3-6 Months: To assess early outcomes and address any early complications 1.

Annually: For long-term monitoring of implant stability, functional outcomes, and patient satisfaction 1.

Special Populations

Elderly Patients

Considerations: Increased risk of comorbidities and poorer bone quality; careful patient selection and tailored rehabilitation are essential 1.

Patients with Rotator Cuff Deficiency

Management: TSA, particularly reverse TSA, may be indicated to compensate for deficient rotator cuff function 1 9.

Comorbidities

Osteoporosis: Higher risk of periprosthetic fractures; bone density management preoperatively is crucial 1.

Cardiovascular Disease: Requires meticulous perioperative management to mitigate surgical risks 1.

Key Recommendations

Select Patients Wisely: Prioritize patients with severe glenohumeral arthritis unresponsive to conservative management for TSA 1 (Evidence: Strong).

Choose Appropriate Implant Type: Consider glenoid component design based on bone quality and surgeon expertise 1 1 (Evidence: Moderate).

Incorporate Imaging for Preoperative Planning: Utilize MRI and CT for detailed assessment of bone stock and soft tissue involvement 1 (Evidence: Moderate).

Post-Operative Rehabilitation: Enforce a structured physical therapy program focusing on range of motion and strength 1 (Evidence: Strong).

Regular Follow-Up: Schedule routine follow-ups to monitor implant stability and functional outcomes 1 (Evidence: Strong).

Address Early Complications Promptly: Immediate intervention for signs of infection or loosening to prevent long-term sequelae 1 (Evidence: Strong).

Consider Revision Surgery for Failed Implants: Evaluate and proceed with revision procedures for persistent pain or mechanical failure 1 10 (Evidence: Moderate).

Use Structural Allografts for Severe Bone Loss: In cases of significant glenoid bone deficiency, structural allografts can enhance implant fixation 1 10 (Evidence: Moderate).

Monitor for Scapular Notching: Especially in reverse TSA patients, to prevent long-term complications 1 2 (Evidence: Moderate).

Tailor Management to Special Populations: Adjust surgical and rehabilitation strategies for elderly patients and those with comorbidities 1 (Evidence: Expert opinion).

References

1 Zan RAA, Lazarini RF, Matsunaga FT, Netto NA, Belloti JC, Tamaoki MJS. Glenoid failure after total shoulder arthroplasty with cemented all-polyethylene versus metal-backed implants: a systematic review protocol. BMJ open 2020. link 2 Uri O, Bayley I, Lambert S. Hip-inspired implant for revision of failed reverse shoulder arthroplasty with severe glenoid bone loss. Improved clinical outcome in 11 patients at 3-year follow-up. Acta orthopaedica 2014. link 3 Velasquez Garcia A, Abdo G, Sanchez-Sotelo J, Morrey ME. The Value of Computer-Assisted Navigation for Glenoid Baseplate Implantation in Reverse Shoulder Arthroplasty: A Systematic Review and Meta-Analysis. JBJS reviews 2023. link 4 Menze J, Leuthard L, Wirth B, Audigé L, De Pieri E, Gerber K et al.. The effect of pathological shoulder rhythm on muscle and joint forces after reverse shoulder arthroplasty, a numerical analysis. Clinical biomechanics (Bristol, Avon) 2023. link 5 Haratian A, Deadwiler B, Dobitsch A, Bolia IK, Thompson AA, Hasan LK et al.. Return to sport criteria following upper extremity surgery in athletes-part 4: shoulder arthroplasty procedures: a scoping review. Journal of ISAKOS : joint disorders & orthopaedic sports medicine 2023. link 6 Chahal J, Dwyer T. Editorial Commentary: Patients Who Achieve a Minimal Clinically Important Difference (Feel Better) Early After Hip Arthroscopy Have the Highest Rates of Long-Term Satisfaction. Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association 2021. link 7 Yoon JH, Marigi EM, Crowe MM, Ortiguera CJ, Schoch BS. Articular Surface Failure of a Hybrid Anatomic Glenoid Component: A Case Report. JBJS case connector 2021. link 8 Davey MG, Davey MS, Hurley ET, Gaafar M, Pauzenberger L, Mullett H. Return to sport following reverse shoulder arthroplasty: a systematic review. Journal of shoulder and elbow surgery 2021. link 9 Franke KJ, Christmas KN, Simon P, Mighell MA, Frankle MA. The effect of glenoid bone loss and rotator cuff status in failed anatomic shoulder arthroplasty after revision to reverse shoulder arthroplasty. Journal of shoulder and elbow surgery 2021. link 10 Ozgur SE, Sadeghpour R, Norris TR. Revision shoulder arthroplasty with a reverse shoulder prosthesis : Use of structural allograft for glenoid bone loss. Der Orthopade 2017. link 11 Shafritz AB, Fitzgerald MG, Beynnon BD, DeSarno MJ. Lift-off Test Results After Lesser Tuberosity Osteotomy Versus Subscapularis Peel in Primary Total Shoulder Arthroplasty. The Journal of the American Academy of Orthopaedic Surgeons 2017. link 12 Sparrow T, Fitzpatrick N, Meswania J, Blunn G. Shoulder joint hemiarthroplasty for treatment of a severe osteochondritis dissecans lesion in a dog. Veterinary and comparative orthopaedics and traumatology : V.C.O.T 2014. link 13 Rzymski P, Kubasik M, Opala T. Use of shear wave sonoelastography in capsular contracture before and after secondary surgery: report of two cases. Journal of plastic, reconstructive & aesthetic surgery : JPRAS 2011. link

Arthritis of left glenohumeral joint