Functional Limb Preservation Research Articles

Nerve graft reconstruction of irradiated oncologic segmental nerve defects in the extremities: A case series

BackgroundNeurovascular involvement of extremity neoplasms is historically considered a contraindication for limb-salvage surgery, due to concerns of limb dysfunction secondary to motor and/or sensory loss. Theoretically, large nerve defects may be amenable to reconstruction using grafts, but the outcomes of these techniques in irradiated oncologic patients remain unclear. MethodsThis study investigates reconstruction of oncologic nerve defects in the extremities in patients who underwent (neo)adjuvant radiotherapy. A retrospective series of ten patients with extremity sarcoma is provided, with six lower extremity and four upper extremity cases. Reconstruction consisted of nerve grafting with or without the addition of tendon transfers. The mean duration of clinical follow-up was 42.5 months. ResultsNerve graft reconstruction led to recovery of motor or sensory function in eight out of ten patients thereby allowing functional limb preservation, with none of the patients developing significant neuropathic pain, a common complication in oncologic resections of the extremities with nerve involvement or following amputation. Thus, radiotherapy does not seem to completely preclude successful graft reconstruction of large oncologic extremity nerve defects. ConclusionsAlthough the oncologic disease itself is associated with significant mortality, the results of the nerve reconstruction were encouraging despite the concomitant use of radiation. Based on the available data and literature, we recommend to at least discuss the option of graft-based nerve reconstruction with affected patients if relevant characteristics such as patient comorbidities and the viability of recipient muscle are favorable. SynopsisIn this study, the results of nerve graft reconstruction of large sarcoma-related nerve defects were evaluated. This type of reconstruction seems feasible even in irradiated limbs, thereby aiding in functional limb preservation.

Advancing pediatric bone sarcoma care: navigating complications and innovating solutions in limb salvage and reconstruction-why, when, and how to treat limb length inequalities.

Pediatric bone sarcomas, particularly osteosarcomas, present unique challenges in the realm of orthopedic oncology, given their predilection for the metaphyseal regions of long bones and the intricate balance required between achieving oncologic control and preserving limb function. This abstract encapsulates findings from a comprehensive review aimed at advancing pediatric bone sarcoma care, focusing on navigating the complications and innovating solutions for complications of limb salvage and reconstruction focusing on limb length inequalities and accompanying bone defects. Advancements in imaging, surgical techniques, and adjuvant therapies have shifted the paradigm from amputation to limb-sparing surgeries, albeit with significant challenges, especially in young patients where growth potential complicates reconstructive outcomes. The series highlights the complexity of managing limb length discrepancies (LLD), the cornerstone of limb salvage challenges, and the innovative approaches to address them, including modular endoprosthetic reconstruction with expandable prostheses, magnetic lengthening nails and biological reconstruction strategies like vascularized fibula grafts. This review underlines the importance of a multidisciplinary approach in managing pediatric bone sarcomas, where the aim extends beyond mere survival to ensuring quality of life through functional limb preservation. It highlights the need for ongoing innovation in surgical and reconstructive techniques tailored to the pediatric population's unique needs, emphasizing the potential of emerging technologies and methodologies to improve outcomes. Future research should aim to fill the existing knowledge gaps, particularly in comparing pediatric and adult surgical outcomes, to refine treatment protocols and improve patient care in this challenging domain.

Microsurgical Reconstruction in Orthopedic Tumor Resections as Part of a Multidisciplinary Surgical Approach for Sarcomas of the Extremities.

A central element of modern sarcoma therapy is complete surgical tumor resection with an adequate safety margin, embedded in an interdisciplinary multimodal therapy concept. Along with ensuring patient survival, functional limb preservation is an important goal for sarcomas of the extremities. This review provides an overview of the relevant literature on indications and goals of reconstructive options, the scope and contribution of microsurgical reconstructive procedures, and the associated interdisciplinary decision making and workup. Furthermore, the impact of (neo)-adjuvant therapy on reconstructive decisions will be highlighted. These aspects will be illustrated by four comprehensive case studies that demonstrate both useful strategies and the need for individually tailored therapies. Nowadays, extremity-preserving therapy is possible in more than 90% of sarcomas. Technical and procedural innovations such as microsurgery and microsurgical reconstructive procedures have significantly contributed to this evolution of therapy.

Toward an Interdisciplinary Approach to Diabetic Limbs in the Era of Functional Limb Preservation: "Can We Preserve This Limb?" Meets "Should We Preserve This Limb?"

Toward an Interdisciplinary Approach to Diabetic Limbs in the Era of Functional Limb Preservation: "Can We Preserve This Limb?" Meets "Should We Preserve This Limb?"

Impact of Loco-regional Surgical Control on Survival of Extremity Soft Tissue Sarcoma among Patients of Hadhramout National Cancer Center

Background: Loco-regional surgery remains the mainstay therapy of extremity soft tissue sarcoma (ESTS) and provides the only chance of cure. Improvements of surgical technique, increased surgical experience, radiotherapy, adjuvant and neoadjuvant chemotherapy increased the survival. Aim of study: to evaluate the effect of the type of surgical intervention on the survival and quality of life of ESTS Patients. Methods: This is a prospective study to evaluate the impact of loco-regional surgical control on the survival among ESTS patients attended the National Cancer Center, Hadhramout -Yemen, between April 2010 and October 2018. Extremity soft tissue sarcoma patients were operated either by wide-local excision with safety margin or amputation or disarticulation. The study population consisted of 52 patients in which males and females represented (53.85%) and (46.15%) respectively. The three variable methods were compared using Chi-square test. Survival rate was analyzed by Kaplan-Meier test. Results: Fifty two patients, 12 patients in Group I (23, 1%), 10 patients in Group II (19.2%) and 30 patient’s in Group III (57.7%). The mean survival in patients underwent disarticulation was (77.5) months, while patients who had an amputation, the survival was (45.5) months, and in wide local resection patients was (59.9) months. The mean overall survival was (65.9) months, P value > (0.026) which was significant. Among the 3 different types of management, high overall survival rate was found in patients underwent disarticulation, while overall survival rate was also high in patient underwent wide local excision or compartmental resection in spite of functional limb preservation and good quality of life. The mean overall survival rate was low in patients who had limb amputation with loss of limb function. Conclusion: The wide local excision or compartmental resection mandates margin-negative, accepted post-operative local wound complication, associated with prolonged disease-free-survival and overall survival than other methods. Must be deal with improve patient overall survival, decrease local recurrence and obtained best Oncological outcome by preserve function with good quality of life for ESTS patients who underwent wide or compartmental resection or radical limb sparing surgery.

Laparoscopic hyperthermic isolated limb perfusion a new minimally invasive approach for HILP

Background: Hyperthermic isolated limb perfusion (HILP) represents a limb-sparing treatment for unresectable soft tissue sarcoma (STS) of the extremities with substantial complete response rates. HILP often provides good functional limb preservation, hence a significant improvement also in terms of quality of life of the patient. Notwithstanding these clear advantages, the traditional technique is still hindered by relatively high post-operative morbidity.Method: We treated a 78-year-old female with unresectable angiosarcoma of the left leg using a new surgical approach: an entirely laparoscopic HILP.Results: No conversion from laparoscopic to “open” surgery was necessary. Since no abdominal muscle section was performed, post-operative pain was low and easily manageable; early mobilisation and early discharge were achieved. Patient developed moderate toxicity, which resolved spontaneously within 3–4 weeks, with complete return to normal daily activities after 30 d. Complete clinical response with preservation of leg function was obtained.Conclusions: We describe for the first time an entirely laparoscopic HILP. Demonstration of this technique’s efficacy and safety on a large series of patients is clearly necessary but its therapeutic efficacy appears to be comparable to the standard technique. Furthermore, laparoscopic HILP has shown low post-operative morbidity: no wound complications, mild and easily manageable post-operative pain and early discharge from the hospital and early resuming of daily activities.

Proton Irradiation with Hyperthermia in Unresectable Soft Tissue Sarcoma.

Unresectable soft tissue sarcomas (STSs) do not usually exhibit significant tumor downstaging with preoperative radiotherapy and/or chemotherapy due to their limited radiosensitivity/chemosensitivity. Limb amputations for tumors of the extremities inevitably lead to considerable loss of function and impairment in quality of life. Local hyperthermia at 39°C to 43°C and proton irradiation combine thermoradiobiological and physical dose distribution advantages, possibly mimicking those of a 12C ion therapy. We report the first 2 patients treated with this unique approach of proton thermoradiotherapy. Both patients had an unresectable STS of the left lower leg (1 grade 2 myxoid fibrosarcoma, 1 grade 3 undifferentiated pleomorphic sarcoma). Both patients had declined the above-knee amputation that had been advised due to their involvement of the neurovascular bundles. They were, therefore recruited to the Hyperthermia and Proton Therapy in Unresectable Soft Tissue Sarcoma (HYPROSAR) study protocol (ClinicalTrials.gov NCT01904565). Local hyperthermia was delivered using radiofrequency waves at 100 Mhz once a week after proton therapy. Proton irradiation was undertaken to a dose of 70 to 72 Gy (relative biological effectiveness) delivered at 2.0 Gy (relative biological effectiveness)/ fraction daily for 7 weeks. Patients tolerated the treatment well with no significant acute or late morbidity. Both primary tumors showed a near complete response on serial magnetic resonance imaging. At a follow-up of 5 and 14 months, the patients were able to carry out indoor and outdoor activities with normal limb function. This is the first report of proton beam irradiation combined with hyperthermia for cancer therapy. Our first experience in 2 consecutive patients with unresectable STSs shows that the approach is safe, feasible, and effective, achieving functional limb preservation with near total tumor control.

Oncologic reconstruction of the hand and upper extremity: Maximizing functional outcomes.

Upper extremity malignancies have the potential to create significant functional impairment, and as such represent an opportunity for collaborative reconstruction to minimize potential morbidity. Given the increased complexity and array of potential reconstruction solutions, functional limb preservation is overwhelmingly and increasingly successful in appropriately selected patients. The purpose of this review is to familiarize the reader with the general functional considerations of the upper extremity, review major reconstructive options, and present a general algorithm for reconstruction and maintenance of function. J. Surg. Oncol. 2016;113:946-954. © 2016 Wiley Periodicals, Inc.

IN.PACT Amphirion paclitaxel eluting balloon versus standard percutaneous transluminal angioplasty for infrapopliteal revascularization of critical limb ischemia: rationale and protocol for an ongoing randomized controlled trial

BackgroundThe effectiveness and durability of endovascular revascularization therapies for chronic critical limb ischemia (CLI) are challenged by the extensive burden of infrapopliteal arterial disease and lesion-related characteristics (e.g., severe calcification, chronic total occlusions), which frequently result in poor clinical outcomes. While infrapopliteal vessel patency directly affects pain relief and wound healing, sustained patency and extravascular care both contribute to the ultimate “patient-centric” outcomes of functional limb preservation, mobility and quality of life (QoL).Methods/DesignIN.PACT DEEP is a 2:1 randomized controlled trial designed to assess the efficacy and safety of infrapopliteal arterial revascularization between the IN.PACT Amphirion™ paclitaxel drug-eluting balloon (IA-DEB) and standard balloon angioplasty (PTA) in patients with Rutherford Class 4-5-6 CLI.DiscussionThis multicenter trial has enrolled 358 patients at 13 European centers with independent angiographic core lab adjudication of the primary efficacy endpoint of target lesion late luminal loss (LLL) and clinically driven target lesion revascularization (TLR) in major amputation-free surviving patients through 12-months. An independent wound core lab will evaluate all ischemic wounds to assess the extent of healing and time to healing at 1, 6, and 12 months. A QoL questionnaire including a pain scale will assess changes from baseline scores through 12 months. A Clinical Events Committee and Data Safety Monitoring Board will adjudicate the composite primary safety endpoints of all-cause death, major amputation, and clinically driven TLR at 6 months and other trial endpoints and supervise patient safety throughout the study. All patients will be followed for 5 years. A literature review is presented of the current status of endovascular treatment of CLI with drug-eluting balloon and standard PTA. The rationale and design of the IN.PACT DEEP Trial are discussed. IN.PACT DEEP is a milestone, prospective, randomized, robust, independent core lab-adjudicated CLI trial that will evaluate the role of a new infrapopliteal revascularization technology, the IA-DEB, compared to PTA. It will assess the overall impact on infrapopliteal artery patency, limb salvage, wound healing, pain control, QoL, and patient mobility. The 1-year results of the adjudicated co-primary and secondary endpoints will be available in 2014.Trial registrationNCT00941733

The Too Few Toes principle: A formula for limb-sparing low-level amputation planning

Both single and multiple toe amputations biomechanically alter foot function to varying degrees. In patients with diabetic neuropathy, these changes often lead to increases in deformity, plantar pressure and risk for ulceration, infection and reamputation. While a philosophy that strives to maximize limb length and function by performing the fewest and most distal amputations possible is likely a good one, we believe that a basic “formula” might help serve as a guide for surgeons to balance limb function with tissue preservation. Digital amputations that exceed a “hallux plus one lesser toe” or “lesser toe plus two” digital/ray amputations in our experience often surpass a threshold of mechanical function. For any clinical scenario in which amputation would extend beyond this threshold, a transmetatarsal amputation (TMA) or pan metatarsal head resection (PMHR) should strongly be considered to avoid costly foot complications and the need for excessive revisional surgery. Such an approach still maintains an underlying philosophy of functional limb preservation. We are unaware of any other attempt to standardize the advancement of surgical intervention from multiple toe resections to a full metatarsal level or higher resection. Therefore, we present this simple formula for surgical planning in the hopes of providing the most durable and efficient care of the high-risk diabetic foot when multiple toe amputations are needed.

Clostridium septicum Necrotizing Fasciitis of the Forefoot Secondary to Adenocarcinoma of the Colon: Case Report and Review of the Literature

Clostridium septicum accounts for 1% of all reported clostridial infections. C septicum infections are most often nontraumatic in nature and associated with either an occult colonic or hematologic malignancy. The initial presentation of a C septicum infection can be relatively benign with rapid progression to fatality without emergent treatment. Presented is a case of necrotizing fasciitis of the forefoot caused by C septicum associated with an occult adenocarcinoma of the colon in a patient with uncontrolled diabetes. The process we used to achieve successful functional limb preservation based on rapid surgical intervention and use of a multidisciplinary approach to medical and surgical management of this patient is discussed in detail, as well as a through review of the literature regarding the association between malignancies and C septicum infections.

Conservative surgery and radiation therapy for soft tissue sarcoma of the wrist, hand, ankle, and foot

Seventy-eight patients with soft tissue sarcoma (STS) arising in the distal extremities--wrist, hand, finger, ankle, foot, and toe--who were treated with conservation surgery and radiation therapy were studied retrospectively with respect to survival, local recurrence, functional limb preservation, complications, and distant metastasis. After a median follow-up of 7.9 years, actuarial 5-year and 10-year survival rates were 80% and 69%, respectively, and disease-free rates were 61% and 51% at the same times. Actuarial local control rates were 80% and 74% at 5 and 10 years, respectively. Fifteen patients (19%) had local recurrence, but 12 of these were salvaged. Ultimately, 53 patients (68%) retained a normal or fairly normal extremity, six (8%) needed amputation for complications, and 13 (17%) needed amputation to control recurrent disease. The functional outcome was significantly better for patients with upper extremity lesions than for those with lower extremity tumors; even for the latter, this treatment strategy was preferable to amputation. The incidence of hematogenous metastases from distal extremity sarcomas depends on the size of the primary tumor. It was concluded that conservation surgery and radiation therapy (XRT) is an acceptable treatment strategy for STS arising in distal extremities; it yielded a high rate of disease control and functional limb preservation.