START TYPING AND PRESS ENTER TO SEARCH

Multifragmentary finger fractures: resolution through insertion of cannulated screws

18 أغسطس, 2017

tornillos canulados_07_20170817

The patient, a middle-aged male, presents severe multifragmentary crushing fractures of the proximal phalanges in the third, fourth and fifth fingers of his left hand. Dr. Piñal choose his technique of insertion of cannulated screws to facilitate the osteosynthesis.

Radiographic images of the patient's comminuted fractures
The patient suffers comminuted fractures in the middle, ring and little fingers of his left hand. The upper radiographs show gravity thereof, with the dispersion of affected areas in multiple bone fragments.

The problem

Multifragmentary or comminuted fingers fractures present the additional difficulty of the bone’s break into various fragments. A conventional approach by means of bone fixation with Kirschner needles lengthens the duration of the procedure and prevents the patient from mobilizing until 3-4 weeks after surgery.

Axial tomography (CT) images allow the preoperative picture of multifragmentary fractures of the patient’s proximal phalanges to be observed.

During this waiting period complications such as the adhesion or ‘gluing’ of the tendons to the bone may arise, which causes loss of function in the affected area after fracture recovery.

Techniques discarded by Dr. Piñal in similar cases
In the left double image, X-ray (the lines are image artifices generated by metallic elements of the gauze) and result of application of Kirschner needles in finger fractures. Loss of mobility after surgery and healing of fractured areas can be seen. In addition to this technique, Dr. Piñal also discards the use of plaques to achieve osteosynthesis in a case of this kind (double right image) since implying a significantly longer duration of surgery and a longer immobilization period, together with a higher level of uncertainty about its outcome.

Together with bone damage, the trauma suffered causes the patient serious injuries, prior to his arrival at the clinic of Dr. Piñal.

Wounds by crushing and mobility a week after the intervention of Dr. Piñal
The patient suffered considerable crushing wounds in his left hand, treated before of his attention by Dr. Piñal. As additional note, the image already shows the functional recovery of the limb just one week after the intervention performed by the Spanish surgeon.

The objectives

The fundamental goals of Dr. Piñal and his surgical unit are to achieve an osteosynthesis, that is to say, the reduction-healing of the fractures, that facilitates an immediate postoperative mobilization and that reduces the time of recovery.

In turn, the elimination of any subsequent discomfort and the minimizing the aesthetic impact of the procedure are pursued.

Insertion of cannulated screw in the fifth finger of the left hand
In the composition, cannulated screw insertion in the patient’s left hand little finger and ‘reflection’ in fluoroscopic image of the same action.

The plan

In this case, Dr. Piñal uses his minimally invasive fixation technique for phalangeal and metacarpal fractures, by means of intramedullary insertion of headless cannulated screws, between 3 and 4 mm in diameter depending on the type of injury. It is an ambulatory surgery modality, that is, the patient is discharged after the intervention without needing a hospital stay.

This pioneering development of the Spanish surgeon was first described in his article ‘Minimally Invasive Fixation of Fractures of the Phalanges and Metacarpals with Intramedullary Cannulated Headless Compression Screws’, published by the journal of the American Society for Surgery of the Hand in April 2015.

Measurement for cannulated screws
The length of the cannulated screws to be used in each case is determined by axial tomography (CT).

As the first key step in the surgery, Dr. Piñal introduces a metal guide into each fractured finger, which adjusts the reduction and allows each cannulated screw to be inserted and slid into place. The appropriate length of such screws is pre-established through axial tomography (CT).

X-ray with cannulated screws already inserted
Post-procedure radiograph after surgical insertion of the cannulated screws into the patient’s hand.

However, in comminuted fractures, such as those of the patient, compression without adequate bone support would be ineffective, so an axial strutting is performed, which causes the cannulated screw to act as a girder on the base of each phalange affected

Idealization of the technique of axial strutting
Graphical idealisation of the axial strutting technique used in this case, which prevents fracture collapse due to lack of support even after adequate reduction.
In the images, development of the technique of insertion of cannulated screws by Dr. Piñal in a case of middle phalanx fracture.

After just an hour in the operating room, well below the time required in other techniques, the patient is allowed to start moving his fingers immediately.

The results

As the inferior set of images allows to see, the surgery is a success, with visible effects already in the first two weeks after the intervention.

In the video: functional and aesthetic recovery of the patient in various moments of the period after the intervention of Dr. Piñal: week 1, 2, 3 and state at three months.

Additional info: