Screw fixation without bone grafting for scaphoid fracture nonunion

Area of Science:

• Orthopedic surgery
• Traumatology
• Radiology

Background:

• Scaphoid fracture nonunions previously classified into linear, cystic, sclerotic, or displaced types.
• Treatment strategies varied: screw fixation without bone grafting for linear/cystic types, and with grafting for sclerotic/displaced types.
• This study reports outcomes for linear and cystic nonunions treated with screw fixation alone.

Purpose of the Study:

• To evaluate the treatment outcomes of linear and cystic type scaphoid fracture nonunions.
• To assess the efficacy of screw fixation alone for these nonunion types.

Main Methods:

• Retrospective study of 19 patients with linear (2) and cystic (17) scaphoid fracture nonunions.
• All patients were male, with a mean age of 29.2 years.
• Treatment involved screw fixation alone, performed by a single surgeon.

Main Results:

• Bone union was achieved in 17 out of 19 patients.
• The average time to bone union was 3.7 months.
• Nonunion occurred in one linear and one cystic fracture; misdiagnosis or unknown factors were suspected.

Conclusions:

• Screw fixation alone is a viable treatment for linear scaphoid fracture nonunions.
• Computed tomography may aid diagnosis when plain radiography is inconclusive.
• Cystic scaphoid fracture nonunions might benefit from subclassification based on cyst characteristics and proximal fragment viability.