The goal of treatment for a simple two part fracture of the shaft of the clavicle requires anatomical reduction and absolute stability.
Note: This is the most common pattern. The deforming forces on the medial end is the pull of the muscles and the deforming force on the lateral side is the weight of the upper extremity.
Beware of the major neurovascular bundle (subclavian artery, vein, and brachial plexus) running directly beneath the midshaft of the clavicle.
Other types of deformities may occur if the coracoclavicular ligaments are disrupted (eg, superior displacement of the lateral fragment).
The optimal inclination of the screw in relation to a simple fracture plane is 90°.
Lag screw fixation alone is typically insufficient to withstand the normal physiologic forces. A neutralization plate is required for additional stability to distribute the forces and allow early mobilization.
We will here show the procedure with a precontoured clavicular plate which has both a bend and a twist built into it.
However, if a precontoured clavicular plate is not available, there are other options.
A straight plate may be used if it fits the clavicle (conventional or angle stable). If it does not, then it needs to be contoured. This is best achieved with a slight twist at the midportion of the plate. This results in the lateral plate being applied superiorly and the medial portion anteriosuperiorly. A reconstruction plate which is easier contour may be used in smaller patients where the forces working on the plate are not as great.
Biomechanically, anterosuperior or anterior plates result in mechanically stronger fixation. The exact placement of the plate will depend on the fracture pattern and the position of the fracture.
Using the fracture interdigitations as a gauge for the reduction, obtain control over the proximal and distal fragments using reduction clamps. Gentle traction using a lobster clamp on the lateral fragment or the free draped arm, and a derotation force, typically to the lateral fragment will assist to anatomically reduce the fracture.
Lag screw insertion(s)
Provisional stability is maintained with a pointed clamp followed by the insertion of one or more lag screws (2.7 or 3.5).
The plate is secured with sufficient bicortical screws inserted in a neutral mode avoiding the previously inserted lag screw.
Typically, a minimum of three bicortical screws in each segment is sufficient.
Note: Occasionally when the fracture location is more lateral or more medial, the bone quality near the metaphysis may not offer sufficient screw purchase. In these instances, a plate offering additional screw fixation may be required (eg, longer plate, periarticular plate, locking screws).
Two days post-surgery the main surgical dressing may be removed and showers are permitted and a light dry dressing may be applied. Soaking in baths, hot tubs and swimming pools are not permitted until minimum two weeks after surgery when the wound is completely healed and the sutures and staples have been removed.
Plate removal from the clavicle is not routinely required or recommended. Symptomatic prominence and impingement of the clavicle plate can occur. After the fracture has completely healed, removal of the implant may be a consideration.
Athletes who return to contact sports should only have the plate removed if absolutely necessary and if so, done at the end of the season to allow maximal healing prior to return to sport.
Many patients who request hardware removal from local symptomatology 6-12 months after implantation find that symptoms diminish significantly by 2 years postoperatively and defer hardware removal indefinitely.
The patient should sleep wearing the sling on his/her back or on the non-injured side.
When sleeping on the side, a pillow can be placed across the chest to support the injured side.
When sleeping on the back, the injured side should be supported by placing a pillow underneath the arm.
It may be more comfortable sleeping in a sitting or semi reclined position.
A non-slip mat in the shower/bath tub will improve safety. The arm can hang gently at the patient's side while bathing. Axillary hygiene is important. If assistance is not available, a long-handled sponge can be used to wash the back and legs.
Loose fitting clothing and button-up shirts are ideal. The affected arm may be used for buttoning and unbuttoning. The affected arm is dressed first, then the non-affected arm. When undressing, start with the non-affected arm, then the affected arm.
Sling support should be provided until the patient is sufficiently comfortable to begin shoulder use, and/or the fracture shows early evidence of healing radiographically.
Once these goals have been achieved, rehabilitative exercises can begin to restore range of motion, strength, and function. The phases of nonoperative treatment are thus:
Passive/assisted range of motion
Active range of motion
Progressive resistance exercises
Usually immobilization is maintained for 1-2 weeks for comfort and wound healing purposes. The use of the sling is gradually decreased at this point.
This is followed by gentle range of motion exercises.
Non-weight-bearing of the affected upper limb is continued for approximately for 6 weeks or until radiographic and clinical evidence of progressive healing.
Resistance exercises can generally be started at 6 weeks. Isometric exercises may begin earlier, depending on the injury and patient symptoms.
Phase I: Day one after surgery
After clavicular surgery, it is important to maintain full mobility of the unaffected joints to reduce arm swelling and to preserve joint motion. The following exercises are recommended:
Straightening and flexion of the elbow
Open and closure of the hand
Squeezing of a soft ball
Bending of the wrist forward, backwards and in a circular motion
Movement of an open hand from side to side
Squeezing the shoulder blades together, while shoulders remain relaxed
Phase II: Two to six weeks after surgery
Pendular exercises can be started when pain starts to subside.
Gradual progression to passive and assisted range of motion exercises are started as tolerated. Scapular stabilization must be observed to restore normal kinetics to shoulder motion.
Activated assisted range of motion exercises are started with:
Flexion with arms on table
Flexion with ball on wall
Sub-maximal isometric exercises with:
External rotation (1)
Note: Timing and progression of exercises are ultimately directed by the operating surgeon as factors such as bone quality, type of fracture and fixation may vary in individuals.
Phase III: Six to twelve weeks after surgery
Pending clinical and radiographic review by the operating surgeon, weight-bearing may now be permitted and gradual resisted/strengthening exercises can begin.
Return to full activities and/or contact sports is permitted once the fracture is united and the extremity has regained full strength. Typically this takes around 6 months post injury. It may be sooner or later depending on the patient factors, progress of fracture healing and response to rehabilitation.
If there has been no progress on serial radiographs of fracture healing, at 3 months, then delayed or impaired healing may be present. If the fracture has not united after 9 months surgical intervention should be considered.