Table 6 Comparison of clinical data between the two groups of patients [n (%), x ± s]

General information

Gender (n)

0.23^b

 Male

 Female

Neer classification (n)

0.28^b

 3-part

 4-part

Age (years)

4.02^b

 <60

 ≥ 60

Smoking (n, with/without)

1.14^b

Diabetes mellitus (n, with/without)

5.43^b

Osteoporosis (n, with/without)

5.84^b

Rehabilitation method (n)

10.14^b

 Formal rehabilitation

 Remedial rehabilitation

 Self-rehabilitation

Surgical indicators

Time from injury to operation (d)

− 1.22^a

Time of operation (min)

− 0.33^a

Intraoperative hemorrhage (ml)

− 0.02^a

Postoperative Drainage volume (ml)

− 1.92^a

Fracture healing time (w)

− 3.26^a

Rotator cuff repair (n)

9.36^b

 Without

 With

Imaging indicators

Calcar screw (n)

10.39^b

 Without

 With

Calcar distance (mm)

− 18.76^a

Calcar ratio (%)

− 18.62^a

Tip distance (mm)

− 1.54

Medial cortical bone defect (n)

10.38^b

Reduction quality (n)

10.52^b

 Adequate reduction

 Poor reduction