Differential Diagnosis for Tenderness at Acromion Process
Single Most Likely Diagnosis
- Subacromial Bursitis: This condition is characterized by inflammation of the bursa that cushions the rotator cuff tendons beneath the acromion process. Tenderness at the acromion process is a common finding due to the proximity of the bursa to this anatomical landmark.
Other Likely Diagnoses
- Rotator Cuff Tendinitis: Inflammation of the tendons of the rotator cuff muscles can cause pain and tenderness in the area of the acromion process, as these tendons pass under the acromion.
- Impingement Syndrome: This condition occurs when the tendons of the rotator cuff muscles or the subacromial bursa are compressed or "impinged" under the acromion process, leading to pain and tenderness in this area.
- Acromioclavicular Joint Arthritis: Arthritis affecting the acromioclavicular joint can cause pain and tenderness at the acromion process due to the joint's location.
Do Not Miss Diagnoses
- Fracture of the Acromion or Clavicle: Although less common, a fracture in this area can cause significant tenderness at the acromion process. Missing this diagnosis could lead to improper healing and long-term disability.
- Infection (Osteomyelitis or Septic Arthritis): Infections involving the bone or joints around the acromion process are rare but serious conditions that require prompt diagnosis and treatment to prevent severe consequences.
Rare Diagnoses
- Tumor (Bone or Soft Tissue): Tumors, whether benign or malignant, can occur in the bones or soft tissues around the acromion process, causing tenderness. These are rare but important to consider in the differential diagnosis.
- Rheumatologic Conditions (e.g., Rheumatoid Arthritis, Polymyalgia Rheumatica): Certain rheumatologic conditions can cause widespread musculoskeletal pain, including tenderness at the acromion process, though this would typically be part of a more systemic presentation.