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Salvage Tibial-Talocalcaneal Arthrodesis with Retrograde Intramedullary Nail Fixation in Elderly with Posttraumatic Secondary Arthritis: Limb Salvage Reconstruction in Two Cases with Review of Literature

Case report
[https://doi.org/10.13107/jocr.2023.v13.i05.3666]
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Salvage Tibial-Talocalcaneal Arthrodesis with Retrograde Intramedullary Nail Fixation in Elderly with Posttraumatic Secondary Arthritis: Limb Salvage Reconstruction in Two Cases with Review of Literature

Learning Point of the Article :
In an elderly, consider TTCA with RIMN as a reliable salvage procedure for a post traumatic SA of ankle.
Case report | Volume 14 | Issue 05 | JOCR May 2023 | Page 105-110 | Lavindra Tomar [1], Gaurav Govil [1], Pawan Dhawan [1]. DOI: https://doi.org/10.13107/jocr.2023.v13.i05.3666
Authors: Lavindra Tomar [1], Gaurav Govil [1], Pawan Dhawan [1]
[1] Department of Orthopaedics, Max Super Speciality Hospital, Patparganj, Delhi, India.
Address of Correspondence:
Dr. Gaurav Govil, Department of Orthopaedics, Max Super Speciality Hospital, Patparganj, Delhi, India. E-mail: gauravgovil@yahoo.co.in
Article Received : 2023-02-06,
Article Accepted : 2023-04-22

Introduction: Posttraumatic secondary arthritis (SA) in the elderly with diabetes mellitus, osteoporosis, and neuromuscular affections has poor healing potential, leading to poor clinical and functional outcomes. Tibial talocalcaneal arthrodesis (TTCA) has been used to salvage for resultant hindfoot deformation. Retrograde intramedullary nailing (RIMN) has achieved reasonable fusion rates with improved functional outcomes.

Case Report: We report two cases of failed ankle surgery with progressive SA managed with curved RIMN to achieve TTCA. The American Orthopaedic Foot and Ankle Society Hindfoot scale, visual analog scale, radiologic assessment, and clinical examination were used to assess outcome measures. We achieved good ankle scores with pain-free independent mobilization at 4 months. At minimum 1-year follow-up, all had good hindfoot alignment, good fusion, and no implant loosening or failure.

Conclusion: Salvage TTCA with RIMN for a hindfoot SA can be a reliable technique to obtain good fusion, high satisfaction rate, and functional improvement following post-traumatic failed ankles in the elderly. The complex procedure has marked clinical improvement with the pain-free walking ability in an arthritic ankle, even with associated medical comorbidity.

Keywords: Hindfoot arthritis, hindfoot arthrodesis, tibial talocalcaneal arthrodesis, intramedullary nailing, secondary arthritis, failed ankle surgery.

Introduction:

Post-traumatic secondary arthritis (SA) incapacitates the elderly. A severe ankle deformity can be physically and mentally debilitating. The potential for healing in the elderly gets compounded by associated risk factors including diabetes mellitus (DM), rheumatoid arthritis, osteoporosis, neuropathy, smoking, and post-poliomyelitis residual paralysis [1, 2, 3]. Tibial talocalcaneal arthrodesis (TTCA) by retrograde intramedullary nailing (RIMN) for a failed ankle surgery presenting with SA gives reliable clinical and functional outcomes [4, 5]. However, the comorbid condition of DM, elderly age, and revision surgery are factors associated with a higher probability for failure and an eventual amputation [3]. We review the literature available to present a homogenous posttraumatic arthritic ankle group to guide management issues for the complex trauma. We report two cases of posttraumatic SA managed by RIMN fixation for TTCA with a high rate of patient satisfaction after attaining desirable clinical and functional outcomes. The compounding factors involved were DM, osteoporosis, and post-polio residual paralysis.

Case Report:

Case 1

A 73-year-old female slipped and fell at home and sustained an unstable subluxation of tri-malleolar fracture left ankle with an ipsilateral proximal fibular fracture (Fig. 1). She underwent ankle fixation surgery at a health-care facility elsewhere in another hospital with the fixation of medial and lateral pillars with plates, wires, and screws (Fig. 2). Her ankle was kept in support for almost 3 months with a non-weight-bearing protocol with the hope of sound union and functional recovery. However, she presented with a posttraumatic failed surgery with non-union and SA (Fig. 3). DM, osteoporosis, and fracture comminution in an operated ankle presented further challenges in the management. The routine blood biochemistry and acute phase reactants were normal. We contemplated the complex situation for surgical management. TTCA after the removal of previous implant and re-osteosynthesis with a curved RIMN (Synthes expert hindfoot arthrodesis nail [HAN; Synthes AG, Bettlach, Switzerland] was done (Fig. 4). Under tourniquet control, the transfibular approach for the left ankle in prone, with feet supported over a boulder, was used (Fig. 5). We removed the implant and resection of the distal tibial and talus non-union parts with denuded abnormal cartilage and bony debris to bleeding surfaces. A fibular osteotomy at the mid-third and lower third junction of the fibula allowed a realignment of the ankle joint. A supplementary anteromedial incision to remove the implant from the medial malleolus was made with additional preparation of the bony surfaces along the malleolus and talus. We made an entry point at the desired end on the calcaneum. An intramedullary guide wire is placed under fluoroscopic guidance, and graduated reaming is done. We put an appropriately sized intramedullary nail, and fixation with calcaneum, talus, and tibial locking bolts were done and postoperatively kept in a below-knee well-padded cast. Prophylactic thromboprophylaxis avoided deep vein thrombosis. An early superficial infection was managed with monitored wound inspection without any secondary procedures. The cast was continued for 6 weeks with non-weight-bearing ambulation. After 6 weeks, partial weightbearing was allowed on the synthetic cast for another 4 weeks. The self-assessment for the clinical and functional recovery was graded well. Three months follow-up showed sound wound healing with no infection. The postoperative radiograph showed a good alignment with a sound union (Fig. 6). A 6-month recovery showed pain-free mobilization with a plantigrade foot without support. The AOFAS ankle score at 1-year follow-up was 80.

Case 2

A 56-year-old female presented with a painful right ankle and considerable difficulty walking without pain and support for 3 months. Her right lower limb was affected by post-polio residual paralysis. She has a history of ankle fixation around 8 years back for a compound injury involving the talus and medial malleolus. She had an uneventful recovery and was ambulatory post-recovery without support. Her discomfort has increased gradually to incapacitate her to do daily routine activities without pain. She has healed scar marks along the right ankle region on the medial aspect with mild cavus deformity of the right foot. Radiographs show secondary arthritic changes with an implant in situ (Fig. 7). The acute phase reactants were normal. Poor healing potential with poor muscle mass posed challenges in the management. The surgical management included removing the implant, TTCA with RIMN, and below-knee cast application. Her postoperative period was uneventful, and no complications were noted. She progressed to the union in 14 weeks (Fig. 8). At the last follow-up of 1 year, the AOFAS ankle score improved from a preoperative score of 62–78 postoperatively. Her heel valgus was satisfactory, and she had no heel pain. She was graded as good with the clinical and functional improvement with radiological sound fusion (Fig. 9).

Discussion:

TTCA aims to provide a pain-free ankle with a stable hindfoot in a deformed foot [2, 6, 7]. TTCA has been used as a salvage procedure for failed ankle fixation, failed ankle arthroplasty, failed ankle arthrodesis with subtalar arthritis, tuberculous arthropathy, and neuropathic joints [1, 4, 5, 6, 7, 8]. Few contraindications to RIMN for TTCA include an intact subtalar joint, severe distal tibial angular deformity, and significant calcaneal height loss [6]. TTCA can be achieved with intramedullary nailing, crossed cancellous screw fixation, external fixators, and angle blade plate fixation [1, 5, 7, 8, 9]. RIMN and other fixation techniques have been compared in biomechanical studies with inconclusive superiority between a plate or a nail construct [10]. RIMN was earlier done with a straight nail. However, a straight RIMN was associated with high complication rates of lateral plantar nerve damage and tibial stress fractures [1, 9]. The curved RIMN provides more physiological hindfoot valgus [1, 8, 9]. The complication rate reported with a curved nail fixation compared to a straight nail are low [8, 11]. For a successful hindfoot arthrodesis with a nail, the technique requires to realign the deformed ankle with the adequate preparation of cancellous surfaces of bone to place the intramedullary nail in proper alignment to achieve a sound union [7]. An improper placement predisposes to malunion, non-union, implant breakage, compromised wound healing, and neurovascular deficits [12]. The recommendations for an ideal entry point have been proposed for an uneventful outcome [12]. The perfect position described for optimal positioning of the hindfoot is 0° dorsiflexion and approximately 5° heel valgus, with external rotation of the foot about the tibia comparable to that of the normal contralateral side, or around 5°–10° [5, 10]. The RIMN had the advantage of providing immediate rigid internal fixation with compression at the arthrodesis site allowing load-sharing capacity with increased rotational stability [7]. It was also valuable for osteoporotic bone, in which achieving solid screw fixation can be complex. TTCA has majorly been reported as retrospective case series in the available literature (Table 1). The literature has few systematic reviews, and it lacks a meta-analysis study. The studies on TTCA commonly present heterogeneous groups with mixed etiology with posttraumatic SA ankle accounting for approximately 30–50% cases in the retrospective series. The union rates reported are high (86–95%); however, complication rates noted are high too (27–56%) (Table 1). TTCA for primary trauma management has been rarely presented [13, 14]. An expandable nail was used as a primary stabilization device in elderly fragility fractures with good functional outcomes allowing weight-bearing ability [13]. The primary TTCA has been rarely advocated for limb salvage reconstruction for a non-reconstructable fracture involving distal tibia, pilon, and talus with associated compounding and soft-tissue injury [14]. They concluded to suggest a primary TTCA consideration in an elderly with coexistent DM and osteoporosis for fractures involving distal tibia articular surface [14]. The comorbid association of DM, neuropathy, and rheumatoid arthritis in a failed ankle surgery contributes to poor outcomes and high complication rates in the management of posttraumatic SA [4, 6, 15, 16]. There are only a few comparative studies for TTCA evaluation among predominant DM versus non-diabetics [11, 17, 18]. Traumatic ankle fractures in non-compliant diabetic patients with severe peripheral neuropathy, uninfected mechanical ulcers, and insensate feet have been managed with good outcomes [19, 20]. Overall, the outcomes were comparable with a slight predominance of superficial infections among DM; however, the eventual results for limb salvage had no significant difference [17]. The association of DM has been identified as the most critical risk for amputation following TTCA by RIMN. Other factors identified with a high probability of amputation are the elderly, previous ulceration, and revision surgery [3]. Our case presenting with DM was compounded by a superficial infection that responded to local measures without a secondary procedure. The satisfactory outcomes in posttraumatic ankles with SA managed with TTCA highlight its usefulness. The second case in our series of posttraumatic SA presented in a post-polio residual paralysis patient affected by trauma. Her progression to a painful ankle prevented her from ambulating without support. The high rates of poor or delayed healing with the additional need for support devices in a post-polio residual paralysis limb are frequent occurrences. TTCA using RIMN allowed us to obtain sound union and pain-free unaided ambulation in our case. To our knowledge, this is the first case described in this complex scenario. The presentation of a homogenous group of posttraumatic SA in the elderly with compounding risk factors will allow the treating surgeons to base their decision judiciously in planning for the management of a failed complex trauma.

Conclusion:

Surgeons can salvage a complex failed ankle injury with a sound ankle arthrodesis and stable fixation principles to allow an early return to pain-free walking ability with the advanced nailing procedure. The patient satisfaction rates are high with the achieved functional and clinical outcomes, and it further justifies the use of this procedure in the osteoporotic elderly.

Clinical Message:

TTCA with RIMN achieve sound fusion with a reliable satisfactory clinical and functional outcome in a failed posttraumatic arthritic ankle.

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How to Cite This Article: Tomar L, Govil G, Dhawan P. Salvage Tibial-Talocalcaneal Arthrodesis with Retrograde Intramedullary Nail Fixation in Elderly with Posttraumatic Secondary Arthritis: Limb Salvage Reconstruction in Two Cases with Review of Literature. Journal of Orthopaedic Case Reports 2023 May, 14(05): 105-110.
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