Ankle arthrodesis using Ilizarov ring fixators: a review of 22 cases

BACKGROUND: Orthopaedic surgeons are being increasingly confronted with complex ankle problems that cannot be reliably treated by conventional arthrodesis procedures. The Ilizarov technique can be an alternative salvage method in such cases. METHODS: Twenty-two Ilizarov tibiotalar arthrodeses were retrospectively reviewed. There were 16 men and six women (mean age 49 years). The underlying pathology was infection after internal fixation of ankle or plafond fractures in 16 patients, posttraumatic ankle arthritis in five, and septic arthritis after an infected Achilles tendon repair in one. Five patients had at least one failed previous arthrodesis. Primary iliac crest bone grafting was done in two patients. Proximal tibial lengthening was done in six patients. RESULTS: Twenty-one patients were followed for an average of 29 months. A solid fusion was achieved in all patients by the end of treatment. The external fixation time averaged 27.7 (range 12 to 84) weeks. The mean time spent in a foot frame was 22.3 weeks. Complications occurred in 11 patients, including two nonunions that healed after revision and renewed frame application and four pin track infections. CONCLUSIONS: The use of the Ilizarov frame provides a successful salvage method that offers solid bony fusion, optimal leg length, and eradication of infection in complex ankle pathology or failed previous arthrodesis.     

Arthrodesis with the Ilizarov device after failed knee arthroplasty

Thirteen patients with failed total knee arthroplasty (TKA) due to infection (12 patients) or aseptic loosening (1 patient) underwent arthrodesis using the Ilizarov external fixator. Solid fusion was achieved in all patients with an average healing time of 27.6 weeks. Patients spent an average 18.8 weeks in the fixator followed by an average 8.8 weeks in a plaster cylinder cast. Five patients had a pin tract infection and one a superficial wound infection. One patient had 15 degrees recurvatum after surgery that was gradually corrected by adding a hinge system to the fixator. Average shortening of the affected limb was 3.7 cm (range: 1-6 cm). The Ilizarov fixator for knee arthrodesis after failed TKA produced favorable results and should be considered for use by surgeons familiar with the technique.     

The Ilizarov external fixation frame in compression arthrodesis of large, weight bearing joints

Solid bony fusion of large joints affected with active chronic infections, is still the most effective surgical solution to establish a useful function of the affected limb. Even with extensive peri-articular bone loss and severe deformities, arthrodesis in a functional position can provide effective stability. The reported fusion rates in such patients are not encouraging however, and secondary amputations have been reported. Compression arthrodesis using an Ilizarov external fixation frame was performed for 17 destroyed feet (14 tibiotalar and 3 subtalar joints) and 6 badly disrupted knees in a series of 20 patients. Evaluation of the results was based on the clinical and radiological joint alignment, achievement of fusion, presence or absence of infection, and functional outcome. One patient after knee joint arthrodesis was lost to follow-up, and two knees had developed a clinically stable fibrous union. Solid fusion was obtained in all other joints. All joints were in anatomical alignment and the patients were fully functional at the time of review. Our experience of using the Ilizarov fixation frame for achieving joint fusion is very rewarding. The results reported hereby justify the further use of this hybrid frame as an effective mechanical method to achieve bony joint fusion without bone grafts, and to ensure a low failure rate.     

Knee arthrodesis with simultaneous lengthening using the Ilizarov method

OBJECTIVE: To determine whether knee arthrodesis with simultaneous lengthening using the Ilizarov method for a nonreconstructable knee joint with bone loss and infection is a successful salvage procedure. DESIGN: Retrospective review of patients. SETTING: University hospital-based orthopaedic practice. PATIENTS: From 1999 to 2001, 4 consecutive patients with a nonreconstructable knee joint, bone loss, and infection after trauma underwent knee arthrodesis with simultaneous lengthening. INTERVENTION: Arthrodesis of the knee with simultaneous limb lengthening through an osteotomy of the tibia and/or femur and the use of an Ilizarov frame. External bone stimulation was used at the knee arthrodesis site and the lengthening sites. Application of this device began during the early distraction phase and continued until frame removal. MAIN OUTCOME MEASURES: Bony union at the arthrodesis and bone lengthening sites, alignment of the lower extremity, limb length discrepancy, infection, pain, and outcome scales (SF-36 scores and American Academy of Orthopaedic Surgeons lower limb modules). RESULTS: Bony union of the knee arthrodesis and lengthening sites and good alignment were achieved in all 4 patients. Mean amount of lengthening was 5.4 cm (range 2.5-11.5 cm). Average time in frame was 11 months (range 6-17 months). Limb length discrepancy after treatment averaged 1.8 cm (range 0.6-3.7 cm). Mean duration of follow-up after frame removal was 35 months (range 28-48 months). At follow-up, infection had not recurred, pain was not present, and assistive devices were not needed for ambulation. Average SF-36 scores improved in all 8 categories, and the average American Academy of Orthopaedic Surgeons lower limb modules improved from a mean of 33 (range 11-37) to a mean of 68 (range 51-76). CONCLUSION: Knee arthrodesis with simultaneous lengthening can be performed successfully using the Ilizarov method. It enables surgeons to optimize limb length during knee arthrodesis. The use of external fixation and the avoidance of internal implants may be advantageous in the presence of or history of infection. The Ilizarov frame provides stability that allows weight bearing during treatment.     

Arthrodesis of the knee after an infected arthroplasty using the Ilizarov method

We treated 15 patients by arthrodesis of the knee after removal of an infected total knee arthroplasty, using an Ilizarov ring fixator. Eight had a failed arthrodesis by another technique. The mean age of the patients was 75 years, the mean duration of retention of the frame was 28 weeks, the mean treatment time 51 weeks, and the mean follow-up 52 months. All but one knee fused at the first attempt, a rate of union of 93%. The incidence of complications related to treatment was 80%. The length of treatment and rates of complication were attributed to advanced age and the adverse local clinical factors in these patients. The Ilizarov method is a promising technique for achieving arthrodesis under these circumstances.     

Management of shotgun-induced fractures of the humerus with Ilizarov external fixator

Abstract We retrospectively reviewed 11 shotgun-induced open humeral fractures treated with immediate application of Ilizarov type ring external fixation. Eight patients had grade III A and three had grade III B open fractures. No patient had associated neurovascular injury. All fractures were stabilized with Ilizarov external fixator immediately after meticulous debridement and irrigation under emergent conditions. Complete bony union occurred in all patients in 14–44 weeks (mean, 21 weeks). One patient required a second intervention to adjust the external fixator rings. Two patients required a rotational fasciocutaneous flap to handle the soft tissue coverage problem. Superficial pin tract infection was present in eight patients; however none of them had deep infection or osteomyelitis. A good to excellent result was achieved in 10 patients according to the rating system of Smith and Cooney. Immediate Ilizarov external fixation is a safe method of obtaining a functional limb in the treatment of shotgun-induced open humeral fractures with severe soft tissue damage.     

Knee arthrodesis after infected total knee arthroplasty using the Ilizarov method

Numerous treatments have been proposed for infected total knee arthroplasty. In selected patients, a knee arthrodesis is a well-recognized salvage procedure. However, there are no reports in the literature discussing the treatment of infected total knee arthroplasty using the Ilizarov method. The authors reviewed their experience with this technique in infected total knee arthroplasty, presenting six patients (four women, two men) treated between 1992 and 1998. The average age was 56.6 years (range, 23-70 years) and the mean number of previous surgical procedures was seven (range, 4-10 procedures). From the time of frame removal, the patients were followed up for a mean of 34.2 months (range, 12.4-87.5 months). Full weight-bearing was allowed 1 week after surgery if half-pins were used and after a mean of 2.6 months if Kirschner wires were used. Of the five patients who have completed treatment, all have obtained a stable knee arthrodesis after a mean external fixation time of 6.8 months without additional surgical procedures or bracing. All of the patients were satisfied with the treatment. The authors recommend knee arthrodesis by the Ilizarov method for infected total knee arthroplasty, particularly in patients with extensive bone loss, significant limb shortening or axial deformity or both, active infection, or previous failed arthrodesis.     

Infected total knee arthroplasty treated with arthrodesis using a modular nail.

Failed treatment of infected total knee replacement presents few attractive surgical options. Knee arthrodesis is challenging surgically and can be complicated by nonunion, malunion, or recurrent infection. Recently, a modular titanium intramedullary nail has been used in an attempt to reduce the incidence of nonunion and the rate of complications. In the present study, a review of the results of knee arthrodesis after infected total knee arthroplasty in 21 patients at three large academic institutions was performed. All patients were followed up for a mean of 2.4 years (range, 2-7.5 years). The mean age of the patients was 64 years. The mean number of previous operations was four (range, 2-9 operations). A solid arthrodesis was achieved without additional surgical treatment in 20 of 21 patients (95%). The mean time to fusion was 6.3 months. The one patient who suffered a nonunion achieved fusion after a subsequent bone grafting procedure. Based on the present study, intramedullary arthrodesis with a coupled titanium nail, is a reliable, effective method of achieving fusion after infection of a total knee arthroplasty. This procedure resulted in a high rate of fusion and a lower rate of complications when compared with traditional methods of arthrodesis.     

Femoral Periprosthetic Fracture in Osteoporotic Bone after a Total Knee Replacement: Treatment with Ilizarov External Fixation

We report 3 cases of periprosthetic fractures after total knee replacement treated with Ilizarov external fixator (Smith and Nephew plc, Memphis, Tenn) and a follow-up of at least 3 years. We used 2 rings in the supracondylar area distal to the fracture and 3 half pins proximally in all our cases leaving the knee free to move. In one patient apart from the 2-ring frame placed distal to the fracture site the fixator included another ring frame placed proximally just below the 3 half pins. Uncomplicated fracture healing with lower extremity excellent alignment was achieved in 12 weeks after surgery. In periprosthetic femoral fractures, especially in elderly patients, Ilizarov external fixator is a treatment option which provides stable fixation, prompt postoperative mobilization, and has no major complications.     

End-Stage Hindfoot Arthrosis: Outcomes of Tibiocalcaneal Fusion Using Internal and Ilizarov Fixation

End-stage post-traumatic pantalar arthrosis from ankle, pilon, and talus fractures has often been complicated by infection, bone loss, and a soft tissue deficit. Patients can present with neuropathy, diabetes, tobacco use, and previously failed arthrodesis. Fusion in this population has been challenging, with nonunion rates up to 30%, often leading to amputation. We reviewed the results of a standardized protocol that combined simultaneous internal fixation with the Ilizarov technique to achieve fusion in high-risk patients. With institutional review board approval, a retrospective review of the patients treated with simultaneous internal fixation and an Ilizarov frame was undertaken. The records and radiographs allowed identification of the comorbidities and the presence or absence of successful fusion. Complications were acknowledged and treated. Fifteen patients had undergone the procedure. The mean follow-up period was 27.9 (range 9 to 67) months. Thirteen patients (86.67%) had had previous fusion failure. Twelve patients (80%) had developed post-traumatic arthrosis, 5 (33.33%) of whom had open injuries. All patients had 1 comorbidity, and 10 (66.67%) had multiple, including rheumatoid arthritis, diabetes (types 1 and 2), and smoking. Four patients (26.67%) presented with deep infection and bone loss. Union was achieved in 11 (73.33%), with 12 (80%) patients experiencing profound pain relief. Seven patients (46.67%) required symptomatic hardware removal. Three patients (20%) eventually underwent below-the-knee amputation for recalcitrant nonunion. Statistically significant correlations were found between smoking and wound infection and revision and between nonunion and amputation. Our results have indicated that combined internal fixation with Ilizarov application can provide a strong surgical option for the management of end-stage, pantalar arthritis. More studies are needed to compare the cohort outcomes and gait analysis in these patients with those who have chosen below-the-knee amputation.     

Arthrodesis after failed knee arthroplasty. A nationwide multicenter investigation of 91 cases

Ninety-one patients with attempted arthrodesis after failed knee arthroplasty were identified in a prospective nationwide study of knee arthroplasties performed from October 1975 through January 1982 in Sweden. The study included 43 hinged or stabilized, 34 bi- or tricompartment, and 14 unicompartment endoprostheses. Three-fourths of the failures were caused by infections. At follow-up evaluation, two patients had expired from infection and four patients had amputations. Fusion was achieved in only 50% of 108 attempts in 91 knees. Patients with unstable joints had limited function. The fusion rate was relatively high after unicompartment endoprostheses, in cases with sustained rigid fixation, or in cases where infection was brought under control at arthrodesis. Rigid fixation was best achieved with an external double frame or an intramedullary nail. Repeated attempts were worthwhile. Removal of all foreign material, eradication of the infectious lesion, and an arthrodesis performed in a one- or two-stage procedure with insertion of gentamicin beads seemed to be the best way to combat infection. The treatment of prosthetic failures should be referred to centers with special interest in knee arthroplasty.     

Vorteile der minimal-invasiven Reposition, Retention und Ilizarov-(Hybrid)Fixation bei Pilon-tibiale-Frakturen unter besonderer Berücksichtigung von C2-/C3-Frakturen

Between October 1993 and September 1999 a total of 62 tibial pilon fractures in 59 patients were treated at the Clinic for Trauma and Reconstructive Surgery, University Hospital Carl-Gustav-Carus, Technical University Dresden. In a retrospective study 49 patients with 50 tibial pilon fractures (81%) could be examined an average of 28 months after injury. The purpose of this study was to compare clinically and radiographically the healing results obtained after using the Ilizarov technique in combination with minimally invasive internal fixation (group I) with those after a conventional surgical procedure (internal fixation with a plate, external fixation with or without minimally invasive internal fixation, and screw fixation exclusively, group II) and to evaluate the efficacy of the Ilizarov technique. Data analysis showed a significantly higher incidence of 43 C2/C3 fractures in Ilizarov group I (73%) than in group II (33.3%). Severe soft tissue injuries and particularly open injuries had a significantly higher incidence in Ilizarov group I (100%) than in group II (38%). Despite the high incidence of C2/C3 fractures and severe soft tissue injuries in group I, there was no incidence of pseudarthrosis or osteitis in the further course and there was no need for arthrodesis during the long-term course. After therapy with a conventional surgical technique, the incidence of osteitis was 5% and of delayed union of a fracture 2.5% and arthrodesis was necessary in 8%. A disadvantage of the Ilizarov system was the relatively frequent incidence of pin infection (45%) necessitating surgical debridement in 18%. The efficacy of the treatment of 43 C2/C3 fractures with the Ilizarov technique was obvious by a statistically significantly better Maryland Foot Score in comparison with group II. More than 87% of the patients treated with the Ilizarov technique and only 38% of the patients treated with a conventional surgical procedure obtained a very good or good score. According to these findings, the Ilizarov technique in combination with minimally invasive internal fixation is an effective method to treat complicated tibial pilon fractures with severe soft tissue trauma.     

Ilizarov ring fixation and fibular strut grafting for C3 distal femoral fractures

PURPOSE: To evaluate treatment outcome following surgical repair of C3 distal femoral fractures using autogenous fibular strut, cortico-cancellous bone grafting, and Ilizarov ring fixation. METHODS: A total of 15 patients with type C3 fractures (supracondylar and intercondylar fractures, with multiplane articular injury) underwent surgical repair at St. John's Medical College Hospital between 1994 and 2001, using autogenous fibular strut, cortico-cancellous bone grafting, and Ilizarov ring fixation. 13 were seen for ongoing follow-up and assessment. Definitive surgery was undertaken at a mean of 3 weeks after admission. Postoperatively, weight-bearing and mobilisation exercise were begun in 2 to 4 weeks. RESULTS: The mean follow-up period was 47 months. Union was achieved in all 13 cases by an average time of 19 weeks. At the last follow-up, the mean range of knee motion was 77 degrees. Assessment of functional outcome (using Neer's scoring criteria) revealed 10 cases with good or satisfactory outcomes, and 3 cases with poor or unsatisfactory results. CONCLUSION: Surgical repair with a fibular strut, cortico-cancellous bone graft and Ilizarov ring fixation appears a suitable treatment option for C3 distal femoral fractures.     

Ilizarov支架外固定联合踝关节融合术治疗终末期踝关节炎

目的探讨采用Ilizarov支架外固定联合踝关节融合术治疗终末期踝关节炎的疗效。方法回顾性分析自2013-06—2014-12采用Ilizarov支架外固定联合踝关节融合术治疗的13例终末期踝关节炎。末次随访时摄踝关节正侧位X线片,必要时CT三维重建检查,确定是否达到骨性融合。采用AOFAS评分标准评价踝关节功能。结果本组13例均获得随访10~28个月,平均17个月。术后均骨性融合,骨愈合时间12~18周,平均15周。外固定架拆除时间16~22周,平均20周。3例出现针道并发症,反复使用酒精及百多邦外用后控制;其中1例针道感染流脓,反复换药经久不愈,更换克氏针后愈合。末次随访时踝关节功能按AOFAS评分标准评定:优1例,良9例,可3例。末次随访时AOFAS评分为69~91(79.6±7.2)分,明显高于术前,差异有统计学意义(t=37.450,P0.001)。结论采用Ilizarov支架外固定联合踝关节融合术治疗终末期踝关节炎的骨愈合率高,尤其适用合并感染、软组织条件差、骨质缺损严重及踝关节畸形的患者。     

The results of treatment of supracondylar fracture above total knee arthroplasty

This study analyzes the results of treatment of 22 patients with 24 supracondylar femur fractures above a total knee arthroplasty. Ten knees were treated by closed methods utilizing traction and then a cast, 10 knees with immediate open reduction and internal fixation, 2 knees with a custom total knee integrated with a distal femoral allograft, 1 knee with external fixation, and 1 knee with primary arthrodesis. Nine fractures treated by closed means and 5 fractures treated by open reduction and internal fixation healed primarily. Two of the 5 surgical failures healed after replating and bone graft. The 3 failures of surgical therapy were salvaged utilizing custom total knee arthroplasty, 2 of which required integration with a distal femoral allograft. One knee treated with external fixation developed a deep infection necessitating implant removal and arthrodesis. Twelve of the 14 femoral fractures that united primarily healed with the femoral component in varus with respect to the long axis of the anatomic femur. Nine of these 12 implants developed progressive radiolucent lines at the tibial component. Three of these knees have required implant revision due to progressive loosening of the tibial and/or femoral components. The results of this evaluation indicate that fractures above a well-fixed total knee arthroplasty are difficult to manage. If anatomical alignment cannot be achieved by simple closed techniques, then primary open reduction and internal fixation should be considered. However, because of the complexity of the problem, the surgeon should be prepared to perform a primary arthrodesis or revision using custom components with or without a distal femoral allograft.     

Use of an intramedullary rod in knee arthrodesis following failed total knee arthroplasty

A retrospective review was conducted of 20 consecutive patients (10 men and 10 women) with failed total knee arthroplasty (TKA) who underwent arthrodesis using an intramedullary rod. Average patient age was 70.5 years. One patient was lost to follow-up, and the remaining 19 patients were evaluated an average of 4.5 years postoperatively (range: 1-24 years). Three patients without infections achieved a solid arthrodesis without complications. In 16 patients, the indication for fusion was an infection, and 12 of these patients had an uncomplicated postoperative course and achieved a solid arthrodesis. Of the remaining 4 patients, 1 required revision for a nonunion, 1 a skin graft, and 2 had recurrence of their infections in the postoperative period. Both patients had positive cultures at attempted arthrodesis. One patient underwent debridement at 3 months, and a solid fusion was obtained. The other patient required rod removal and currently has a nonunion, uses a brace, and is on suppressive antibiotic treatment. An intramedullary rod is the ideal fixation choice for knee arthrodesis in patients with a failed, noninfected TKA; however, in patients with an infection, the infection must be eradicated prior to rod use.     

Intramedullary Arthrodesis of the Knee in the Treatment of Sepsis After TKR

Infection is a devastating complication following total knee replacement (TKR). In the majority of cases, single- or two-stage revision has excellent results in eradicating infection and restoring function. Rarely, recurrent infection requires alternative treatments such as resection, amputation, or arthrodesis. A review of infections following TKR treated at two joint replacement centers identified 29 cases of resistant knee sepsis treated with a long intramedullary fusion nail. Clinical outcome and radiographs were reviewed at an average follow-up of 48 months (13–114). After the initial intramedullary arthrodesis union occurred in 24 of 29 patients (83%). The average time to fusion was 6 months (3–18 months). Failures included two cases of nail breakage, one of which subsequently achieved fusion following revision nailing, and three cases of recurrent infection requiring nail removal and permanent resection. At a minimum 2-year follow-up, 28% of the patients that achieved fusion complained of pain in the fused knee, 28% complained of ipsilateral hip pain, and two patients complained of contralateral knee pain. Four of the 25 fused patients (16%) remained nonambulatory after fusion, 17 required walking aids (68%) and only four ambulated unassisted. There was no association between age, number of previous procedures, the use of two-stage versus single stage technique, or infecting organism and failure of arthrodesis. Intramedullary arthrodesis is a viable treatment for refractory infection after TKR. Patients undergoing fusion should be informed of the potential for nonunion, recurrence of infection, pain in the ipsilateral extremity, and the long-term need for walking aids.     

Ilizarov ankle arthrodesis.

Six consecutive patients, four with failed infected ankle fusions and two with posttraumatic degenerative ankle arthritis, were treated by monofocal compression arthrodesis using the Ilizarov external fixator. The average age was 48 years (range, 33-74 years). The average preoperative duration after failed infected ankle fusion was 18 months and for posttraumatic arthritis after fracture, 23 months. Infected failed pseudarthroses had significant fixed valgus deformity of the foot, bilateral draining sinuses, and near complete destruction and loss of the talus. Compression was dynamically applied during treatment. Custom foot plates were secured to the frame, and weight bearing as tolerated was allowed throughout the treatment period. Tibiocalcaneal fusion was obtained in three of four infected failed ankle fusions at an average of seven months (range, five to nine months). There was no evidence of infection at follow-up evaluation in these patients. One patient did not tolerate the frame and developed a fibroarthrosis. One patient sustained a refracture of the fusion at six months. Successful tibiocalcaneal fusion was obtained with reapplication of the frame and a Pappineau graft. Two primary ankle fusions healed with tibial talar fusion at an average of 3.5 months. Overall follow-up time averaged 26 months (range, 19-30 months). Six wires broke, requiring simple replacement. Four of these six were 1.5-mm wires. The Ilizarov frame may have several advantages in primary ankle arthrodesis and in the salvage of infected failed ankle fusions.     

Ankle fusion for definitive management of non-reconstructable pilon fractures

BACKGROUND: Highly comminuted pilon fractures, especially with a compromised soft tissue envelope, present a challenging treatment scenario. This study presents our results for patients managed with ankle fusion rather than ORIF. MATERIALS AND METHODS: Fourteen patients with ankle joint incongruence after non-reconstructable tibia pilon fractures were treated with primary tibiotalar arthrodesis using a fixed-angle cannulated blade plate. Delayed metaphyseal unions due to bone defects were treated concurrently. The subtalar joint was preserved in all cases. RESULTS: Metaphyseal healing and stable arthrodesis was obtained in each case. There was one case of blade plate breakage in a patient who still achieved successful arthrodesis without reoperation. Union was achieved at an average of 15 weeks. No secondary procedures were required to obtain union. All 14 patients were ambulatory at last followup. Average followup was 39 weeks. CONCLUSION: Primary ankle arthrodesis can be achieved using a cannulated blade plate to address a non-reconstructable articular surface and metaphyseal bone defects in complex tibia pilon fractures.