Intra-articular calcaneal fracture: closed reduction and balloon-assisted augmentation with calcium phosphate cement: a case report
© Bano et al; licensee BioMed Central Ltd. 2009
Received: 30 November 2009
Accepted: 9 December 2009
Published: 9 December 2009
For decades, open reduction and internal fixation was the surgical treatment of choice for intra-articular calcaneal fractures, either with or without any augmentation. Delayed weight bearing and wound-related complications are still unresolved. Aiming at a minimally invasive therapy with accelerated mobilization, we applied closed reduction and balloon-assisted augmentation with calcium phosphate cement.
A 45-years-old Greek man with intra-articular calcaneal fracture was treated with closed reduction and balloon assisted augmentation with calcium phosphate cement. Follow-up was performed using the Maryland foot score, plain radiographs and multidirectional computerized tomography. Early full weight-bearing was performed at the end of the first week postoperatively. There was no need for secondary reconstructive procedures at the 2 year follow-up. The patient had minimal problems regarding the pain, subtalar motion and peroneal impingement. There was no significant further collapse of the subtalar calcaneal articular surface radiologically.
The closed reduction and balloon assisted augmentation with calcium phosphate cement of intra-articular calcaneal fractures is a minimally invasive surgical procedure which led to early full weight bearing, good functional patient outcomes and a low complication rate.
The complex morphology and the joint deformity of the intra-articular calcaneal fractures (IACF) have been classified using the computerized tomography (CT) findings . Despite the improvement in understanding and classifying the IACF, the open reduction with or without augmentation remained the surgical procedure of choice. Its main limitations include delayed weight bearing and wound-related complications [2–4].
Aiming at a minimally invasive surgery and early mobilization, we present the surgical technique and the clinical course in a patient with IACF who underwent closed reduction and balloon assisted augmentation with calcium phosphate (Calcibon, Biomet, Warsaw, IN) cement (CPC).
Passive ankle ROM was applied at the end of the procedure. The duration of surgery was 20 min. The patient showed immediate pain relief from the 1st postoperative day. Limb elevation and foot pump were used to prevent ankle swelling.
Restoration of the mechanical stability for earlier full weight-bearing and patient mobilization with minimal morbidity and complications, were our surgical treatment goals. The principal aims of surgical treatment include restoration of height, length, width, and axis with anatomical reconstruction of all joint surfaces and restoration of function by primary stable osteosynthesis. Options include open reduction combined with internal fixation (ORIF) with or without grafting or bone cement augmentation, wire circular frame procedure, open reduction and arthroscopically assisted internal fixation and primary subtalar arthrodesis [1, 3–7]. Several minimally invasive procedures have been described for treating calcaneal fractures: intraoperative CT-guided correction, closed reduction combined with percutaneous screw fixation and the Essex-Lopresti reduction [8–10]. Soft tissue protection is important in surgical management of the calcaneus. Folk et al. in their study including operative treatment of 190 calcaneal fractures, showed that in 25% of cases there was some form of wound complication and 21% of these required surgical treatment . Skin necrosis or infections are not uncommon. Zwipp et al., who studied 123 cases treated with osteosynthesis for displaced IACF, reported an incidence of 8.3% superficial wound edge necrosis . The ORIF of IACF is associated with partial weight-bearing for 6 to 12 weeks postoperatively, depending on the severity of the fracture. Earlier full weight-bearing was performed in IACF treated with ORIF and augmentation with calcium bone cement . Autogenous bone from the iliac crest remains the preferred bone graft for filling void fractures but this procedure is associated with donor-site morbidity and major complications. An alternative to autogenous bone grafts are synthetic bone materials such as CPC. Bajammal et al in a meta-analysis of fourteen randomized controlled trials suggested that the use of CPC for the treatment of fractures in adult patients is associated with a lower incidence of pain and a decreased risk of fracture reduction loss . The use of CPC improved the stability of calcaneal fracture constructs, allowing earlier weight-bearing without loss of reduction. Thordarson et al. demonstrated a significant increase in the compressive fatigue strength of an in vitro calcaneal fracture-repair construct that included filling of the entire defect with SRS bone cement . The compressive strength of calcium phosphate bone cement has been documented to be fifty-five megapascals, which is equivalent to the strength of intact cancellous bone .
In our presented case no development of any soft tissue inflammatory response was observed. The patient was examined during the postoperative follow-up at 6 weeks, 6, 12, 24 months and did not show any loss of correction on plain radiographs.
The stabilization of calcaneal fracture fragments with CPC eliminates painful micromotions and thus may contribute to pain relief by means of stable osteosynthesis.
We consider that the closed reduction and fracture augmentation with CPC without ORIF, can restore the mechanical stability and prevent further collapse of the subtalar calcaneal articular surface, leading to quicker rehabilitation, a shorter period of disability and minimal complications in patients with closed and without extended community of articular surfaces. The patient reported total relief of pain level from the first postoperative day. Larger series and longer follow-up are required to assess prospectively the value of the above applied technique.
The balloon-assisted reduction of IACF and the augmentation with CPC is a minimally invasive and short surgical procedure with minor morbidity. Early postoperative weight bearing and mobilization were possible in our patient who also demonstrated a clinically and radiographically acceptable outcome at the 2 year follow-up. Larger series and correlations with standard techniques are needed to assess the impact of this minimally invasive treatment on the final functional outcome.
Written informed consent was obtained from the patient for publication of this case report and accompanying images. A copy of the written consent is available for review by the journal's Editor-in-Chief.
calcium phosphate cement
intra-articular calcaneal fracture
multidirectional computerized tomography
open reduction and internal fixation
range of motion
skeletal repair system.
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