Treatment of 1.6cm Displaced Clavicle Fracture
A 1.6cm displaced clavicle fracture meets the surgical threshold and should be treated with operative fixation to reduce the risk of nonunion, symptomatic malunion, and to optimize functional outcomes. 1
What the Displacement Means
A 1.6cm displacement indicates significant fracture separation that exceeds the critical threshold for surgical intervention:
- The American Academy of Orthopaedic Surgeons defines shortening exceeding 1.5cm as an indication for surgical treatment in displaced midshaft clavicle fractures 1
- Displacement of this magnitude is associated with up to 15% nonunion rates when managed conservatively 2
- Widely displaced fractures frequently result in symptomatic malunions that adversely affect shoulder strength and function, in addition to cosmetic concerns 2
- The fracture fragments typically form a "Z" deformity due to the pull of the pectoralis major and the weight of the arm 2
Recommended Treatment Approach
Initial Assessment
- Obtain upright radiographs rather than supine films, as they better demonstrate the true degree of displacement 1
- Assess for neurovascular compromise or skin tenting that would require urgent intervention 1
- Evaluate for complete displacement (>100% with no cortical contact between fragments), which requires urgent orthopedic follow-up 1
Surgical Management (Recommended for Your Case)
Surgical fixation is the preferred treatment for your 1.6cm displaced fracture based on the following evidence:
- Surgical treatment provides higher union rates and better early patient-reported outcomes compared to conservative management 1
- Surgery results in faster functional and radiographic recovery, allowing earlier return to work 2
- Multiple randomized controlled trials demonstrate equivalent or improved short-term patient-reported outcomes with reduced rates of nonunion or symptomatic malunion compared to nonsurgical treatment 2
Surgical Options
Plate fixation:
- Manufacturer-contoured anatomic clavicle plates are preferred due to lower rates of implant removal or deformation 1
- Anterior inferior plating may lead to lower implant removal rates compared with superior plating 1
Intramedullary nailing:
- Provides equivalent long-term clinical outcomes to plate fixation with similar complication rates 1
Post-Operative Rehabilitation
- Use a sling for immobilization (preferred over figure-of-eight brace) 1
- By 4 weeks: discontinue sling for routine activities but avoid lifting, pushing, or pulling 1
- 8-12 weeks: full weight-bearing activities allowed based on radiographic evidence of healing 1
- Include muscle strengthening exercises with long-term continuation 1
Important Caveats
Smoking Status
- If you smoke, this significantly increases nonunion rates and leads to inferior clinical outcomes 1
- Smoking cessation should be strongly encouraged before and after treatment
Long-Term Outcomes
- While surgical treatment provides better early outcomes and faster recovery, long-term patient-reported outcomes and satisfaction are similar between surgical and nonsurgical approaches 1
- This means the primary benefit of surgery is avoiding nonunion/malunion complications and achieving faster return to function
Conservative Management (Not Recommended for Your Case)
Conservative treatment would only be appropriate for non-displaced or minimally displaced fractures (well below your 1.6cm displacement) 1. With your degree of displacement, nonsurgical management carries unacceptable risks of: