Study Type: Prospective, three-arm parallel randomized controlled trial (RCT) Study Objective: To compare the 12-month/5 years/10years functional outcomes, morphological healing, cost-effectiveness, and complication rates of three treatment strategies for displaced greater tuberosity (GT) fractures with rotator cuff injury, and to optimize the individualized treatment strategy for GT fractures.

Study Setting: multicenter clinical trial, conducted in the Department of Orthopedics.

Study Period: April 2026 -April 2036.

Inclusion Criteria:

• • Age 18-76 years, male or female;

  • Diagnosed with displaced GT fracture (displacement distance ≥1mm) combined with rotator cuff injury (partial tear or full-thickness tear) by computed tomography (CT) or magnetic resonance imaging (MRI);
  • Time from fracture to admission ≤72 hours (acute phase);
  • No severe heart, liver, kidney or other underlying diseases, and able to cooperate with 12-month complete follow-up;
  • Signed informed consent and voluntarily participated in the trial.

Exclusion Criteria:

• • Pathological fracture or old fracture (>3 weeks);

  • Complicated with shoulder dislocation or other proximal humeral fractures;
  • Previous shoulder surgery history, rheumatoid arthritis, or severe osteoporosis;
  • Mental illness, cognitive impairment, unable to complete functional scoring;
  • Poor follow-up compliance, expected to be unable to complete 12-month follow-up.