14 results on '"Kokkalis"'
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2. Reconstruction of elbow flexion with a modified Oberlin procedure: A comparative study
- Author
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Kokkalis, Zinon T., Bavelou, Aikaterini, Papanikos, Efstratios, Konofaos, Petros, Efstathopoulos, Dimitrios G., and Soucacos, Panayotis N.
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- 2019
- Full Text
- View/download PDF
3. Selecting a free flap for soft tissue coverage in lower extremity reconstruction
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Kozusko, S.D., Liu, X., Riccio, C.A., Chang, J., Boyd, L.C., Kokkalis, Z., and Konofaos, P.
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- 2019
- Full Text
- View/download PDF
4. What's new in the management of complex tibial plateau fractures?
- Author
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Kokkalis, Zinon T., Iliopoulos, Ilias D., Pantazis, Constantinos, and Panagiotopoulos, Elias
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- 2016
- Full Text
- View/download PDF
5. Distal biceps and triceps ruptures
- Author
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Kokkalis, Zinon T., Ballas, Efstathios G., Mavrogenis, Andreas F., and Soucacos, Panayotis N.
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- 2013
- Full Text
- View/download PDF
6. Vascularized bone grafts for the management of skeletal defects in orthopaedic trauma and reconstructive surgery
- Author
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Soucacos, Panayotis N., Kokkalis, Zinon T., Piagkou, Mara, and Johnson, Elizabeth O.
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- 2013
- Full Text
- View/download PDF
7. Selecting a free flap for soft tissue coverage in lower extremity reconstruction
- Author
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Steven D. Kozusko, Louisa C. Boyd, Charles A Riccio, Jeremy Chang, Zinon T. Kokkalis, Petros Konofaos, and X. Liu
- Subjects
Microsurgery ,medicine.medical_specialty ,Soft Tissue Injuries ,Free flap ,Free Tissue Flaps ,Transplant Donor Site ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Humans ,Latissimus dorsi flap ,General Environmental Science ,Postoperative Care ,030222 orthopedics ,Radial forearm flap ,business.industry ,Soft tissue ,Cosmesis ,030208 emergency & critical care medicine ,Plastic Surgery Procedures ,Surgery ,medicine.anatomical_structure ,Lower Extremity ,Gracilis muscle flap ,Gracilis Muscle ,Lateral arm flap ,General Earth and Planetary Sciences ,Ankle ,business - Abstract
Background Goals of lower extremity microvascular reconstruction (LEMR) include the restoration of function, prevention of infection, and optimal cosmesis. Indications for LEMR include large defects that are not amenable to pedicled options, a large zone of injury, and large complex defects. The novice microsurgeon should first master a handful of free flaps to develop an armamentarium of options for addressing such defects. The scope of this review is to provide free flap options for LEMR in any of the thirds of the lower leg. After reading this article, the reader will understand variations, advantages, disadvantages, indications, and tips for raising each of these flaps. Methods Six most commonly used free flaps for LEMR are described in this paper, including the anterolateral thigh flap (ALT) and its variations, the radial forearm flap (RFFF), the lateral arm flap (LAF), the gracilis muscle flap, the rectus abdominis flap (RAF) and the latissimus dorsi flap and its variations. Indications, advantages, disadvantages and technique tips are discussed for each flap. Moreover, selection of the recipient vessels, preoperative management along with an algorithm are also provided. Conclusions The ALT flap is a workhorse in covering defects of the leg, foot, and ankle. It's the flap of choice at our institution, especially given the number of traumatic wounds seen as a result of motor vehicles, all-terrain vehicles (ATV), lawnmowers, and gunshot wounds (GSW). At times, the lower extremity zone of injury requires a distant donor site. The RAF can also provide coverage for large soft tissue defects but donor-site morbidity remains its main drawback. The LAF and RFFF provide two pliable options, one that provides pliable soft tissue with minimal donor site morbidity and another that provides a long pedicle. The free gracilis flap is an excellent choice for crossing the ankle joint. Lastly, the free latissimus dorsi is indicated for large defects of the lower extremity independently of the location.
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- 2019
- Full Text
- View/download PDF
8. Primary and secondary shoulder reconstruction in obstetric brachial plexus palsy
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Terzis, Julia K. and Kokkalis, Zinon T.
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- 2008
- Full Text
- View/download PDF
9. Benign peripheral nerve tumors
- Author
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Andreas Panagopoulos, Zinon T. Kokkalis, Panayotis N. Soucacos, Andreas F. Mavrogenis, and Nikolaos A. Stavropoulos
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Adult ,Male ,medicine.medical_specialty ,Genetic syndromes ,Adolescent ,Peripheral Nerve Tumors ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Peripheral Nervous System Neoplasms ,Medicine ,Humans ,Child ,General Environmental Science ,Aged ,Aged, 80 and over ,030222 orthopedics ,business.industry ,Infant ,030208 emergency & critical care medicine ,Middle Aged ,Treatment Outcome ,Child, Preschool ,General Earth and Planetary Sciences ,Female ,Radiology ,business - Abstract
Benign peripheral nerve tumors encompass a wide range of neoplasms and non-neoplastic tumor like lesions. Some of these lesions if not encountered in the setting of genetic syndromes, are occurring sporadically. The principles of oncology should be respectfully followed in every step of diagnostic approach and surgical management. Albeit, classified as benign, some of them do have different level of malignant potential, thus the treating physicians should be aware of that to avoid possible pitfalls with devastating outcomes. This article reviews the most common benign peripheral nerve tumors discussing the clinicopathological findings, imaging appearance and the current trend in their approach.
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- 2019
10. Reconstruction of elbow flexion with a modified Oberlin procedure: A comparative study
- Author
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Efstratios Papanikos, Petros Konofaos, Zinon T. Kokkalis, Dimitrios G. Efstathopoulos, Panayotis N. Soucacos, and Aikaterini Bavelou
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Adult ,Male ,medicine.medical_specialty ,Adolescent ,Elbow ,Biceps ,Young Adult ,Elbow Joint ,Medicine ,Humans ,Muscle Strength ,Range of Motion, Articular ,Ulnar nerve ,Muscle, Skeletal ,Nerve Transfer ,Ulnar Nerve ,General Environmental Science ,Retrospective Studies ,Surgeons ,business.industry ,Plastic Surgery Procedures ,medicine.disease ,Median nerve ,Surgery ,Median Nerve ,body regions ,medicine.anatomical_structure ,Treatment Outcome ,Brachial plexus injury ,General Earth and Planetary Sciences ,Brachialis ,Female ,business ,Brachial plexus ,Follow-Up Studies - Abstract
Introduction In upper brachial plexus injuries (C5-C6-C7), selective nerve transfers appear as a favourable technique. For this purpose, transfer of an ulnar nerve fascicle to the biceps motor branch (Oberlin's procedure) is often used. In this paper we present our modified Oberlin technique, as well as a comparison of this method with the classic Oberlin procedure. Materials and Methods We present two groups of patients that where operated by two different surgeons. The first group, consisting of 16 patients was treated with the classic Oberlin procedure. The second group included 5 patients treated with a modified Oberlin procedure, where two fascicles from the ulnar nerve were transferred to both the motor branch of the biceps and the motor branch of the brachialis muscles. Results In the last follow-up of the 16 patients from the first group with the classic Oberlin procedure, 15 patients (93.75%) had Medical Research Council (MRC) grade of biceps strength 4 and 1 patient (6.25%) had MRC grade 3, whereas in the group where the modified Oberlin procedure was used the muscle strength was very durable with 4 out of 5 the patients reached MRC grade of 4+ and one MRC grade of 4, and with a mean elbow strength at 5.4 kg (3โ8 kg). No sensitivity or motor problems were encountered on the ulnar territories for both groups. Conclusion With the modified Oberlin technique, the median nerve is reserved and both elbow flexors are innervated. The results of this technique compare favourably with those of other methods. Thus, we propose using the double fascicle transfer from the ulnar nerve to both elbow flexors in order to restore a strong elbow flexion in patients with upper brachial plexus injuries.
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- 2019
11. What's new in the management of complex tibial plateau fractures?
- Author
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Constantinos Pantazis, Elias Panagiotopoulos, Zinon T. Kokkalis, and Ilias D. Iliopoulos
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medicine.medical_specialty ,Soft Tissue Injuries ,medicine.medical_treatment ,Locking plate ,Fracture Fixation, Internal ,03 medical and health sciences ,Fixation (surgical) ,Injury Severity Score ,0302 clinical medicine ,Bone plate ,Tibial plateau fracture ,medicine ,Humans ,Minimally Invasive Surgical Procedures ,Reduction (orthopedic surgery) ,General Environmental Science ,Fracture Healing ,030222 orthopedics ,geography ,Plateau ,geography.geographical_feature_category ,business.industry ,Soft tissue ,030208 emergency & critical care medicine ,medicine.disease ,Surgery ,Tibial Fractures ,Treatment Outcome ,General Earth and Planetary Sciences ,business ,Bone Plates ,Bone Wires - Abstract
The management of complex tibial plateau fractures is ever evolving. The severity of the injury to the surrounding soft tissues influences the timing and the method of fixation. Minimal invasive techniques continue to dominate our philosophy of reduction and reconstruction whereas augmentation of depressed intra-articular fragments remains an accepted strategy to maintain reduction and prevent secondary collapse. Locking plates, conventional plates and fine wire fixators all have been used successfully with satisfactory outcomes. In this article we report on the latest advances made in the management of these complex injuries.
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- 2016
- Full Text
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12. Vascularized bone grafts for the management of skeletal defects in orthopaedic trauma and reconstructive surgery
- Author
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Zinon T. Kokkalis, Panayotis N. Soucacos, Elizabeth O. Johnson, and Mara Piagkou
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Microsurgery ,medicine.medical_specialty ,Reconstructive surgery ,Bone Regeneration ,Neovascularization, Physiologic ,Bone Neoplasms ,Tumor excision ,Fractures, Bone ,medicine ,Humans ,Bone regeneration ,Orthopaedic trauma ,Process (anatomy) ,General Environmental Science ,Bone Transplantation ,Tissue Engineering ,business.industry ,Osteomyelitis ,Osteonecrosis ,Plastic Surgery Procedures ,medicine.disease ,Surgery ,Pseudarthrosis ,Vascularized bone ,Fibula ,Fractures, Ununited ,Wounds and Injuries ,General Earth and Planetary Sciences ,Blood supply ,business - Abstract
Bone loss from trauma, neoplasia, reconstructive surgery and congenital defects remains a major health problem. The long-term clinical goal is to reconstruct bony tissue in an anatomically functional three-dimensional morphology. In the extremities, bone grafts are used for the treatment of non-unions and necrotic lesions, for skeletal structural support and for the reconstruction of defects resulting from trauma, tumor excision, osteomyelitis, congenital pseudarthrosis, or radiation necrosis. In all cases their use is successful provided that the host bed has adequate vascularization. In cases of decreased blood supply, a vascularized bone graft should be applied. The intrinsic blood supply of the vascularized bone grafts leads to higher success rates and to acceleration of the repair process in the reconstruction of defects and necrotic lesions of the skeleton.
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- 2013
- Full Text
- View/download PDF
13. Distal biceps and triceps ruptures
- Author
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Panayotis N. Soucacos, Zinon T. Kokkalis, Andreas F. Mavrogenis, and Efstathios G. Ballas
- Subjects
medicine.medical_specialty ,medicine.medical_treatment ,Biceps ,Tendons ,Fixation (surgical) ,Tendon Injuries ,Suture Anchors ,medicine ,Humans ,Orthopedic Procedures ,General Environmental Science ,Rupture ,Arm Injuries ,Wound Healing ,Rehabilitation ,medicine.diagnostic_test ,business.industry ,Ossification ,Ossification, Heterotopic ,Suture Techniques ,Magnetic resonance imaging ,medicine.disease ,Magnetic Resonance Imaging ,Tendon ,Surgery ,Biomechanical Phenomena ,medicine.anatomical_structure ,Treatment Outcome ,Radial Artery ,General Earth and Planetary Sciences ,Heterotopic ossification ,medicine.symptom ,business - Abstract
Biceps and triceps tendon ruptures are rather uncommon injuries and are most commonly diagnosed clinically. Magnetic resonance imaging can help the clinician to differentiate an incomplete tear and define any degeneration of the tendon. Surgical anatomical repair is typically performed in acute complete ruptures whereas nonoperative treatment can be used for partial ruptures, as well as for patients unfit for surgery. Single incision techniques are associated with a higher rate of nerve injuries, while double incision repairs have a higher prevalence of heterotopic ossification. Although various fixation methods have been applied including bone tunnels, interference screws, suture anchors, cortical button fixation, the current evidence does not support the superiority of one method over the other. A well-planned postoperative rehabilitation programme is essential for a good final outcome. As better fixation devices are being used, more aggressive rehabilitation programmes have been applied. Epidemiology, clinical evaluation, diagnosis, surgical and conservative management of these injuries are presented in this review along with the authors' preferred technique for the anatomical repair of acute complete ruptures.
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- 2013
14. Primary and secondary shoulder reconstruction in obstetric brachial plexus palsy
- Author
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Julia K. Terzis and Zinon T. Kokkalis
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Joint Instability ,Male ,Reoperation ,medicine.medical_specialty ,Palliative care ,Contracture ,Adolescent ,Rotation ,Young Adult ,Paralysis ,medicine ,Humans ,Brachial Plexus ,Range of Motion, Articular ,Brachial Plexus Neuropathies ,Child ,General Environmental Science ,Retrospective Studies ,Plexus ,Palsy ,business.industry ,Shoulder Joint ,Palliative Care ,Infant ,Retrospective cohort study ,Recovery of Function ,Surgery ,medicine.anatomical_structure ,Treatment Outcome ,Child, Preschool ,General Earth and Planetary Sciences ,Shoulder joint ,Female ,medicine.symptom ,business ,Brachial plexus ,Paralysis, Obstetric - Abstract
In this retrospective review, the methods and outcomes in 96 children (98 extremities) with obstetric brachial plexus palsy who underwent primary reconstruction and/or palliative surgery for shoulder function were analysed.Thirty cases underwent primary reconstruction alone, 37 underwent both primary and secondary procedures, and 31 late cases underwent only palliative surgery. The mean follow-up period was 6.7 years.The mean shoulder abduction increased from 48 degrees +/-32 degrees preoperatively to 123 degrees +/-35 degrees postoperatively (average gain 75 degrees ); the mean active external rotation with the arm at the side increased from -19 degrees +/-17 degrees to 62 degrees +/-21 degrees (mean gain 81 degrees ); and the mean aggregate Mallet score improved from 8.8 points to 20.9 points, respectively.Reconstruction of both axillary and suprascapular nerves yielded improved outcomes of shoulder abduction and external rotation. Early plexus reconstruction (or=3 months) offered the best functional results and reduced the need for secondary reconstructions. A marked improvement was observed after palliative surgery irrespective of prior nerve reconstruction. Rerouting of latissimus dorsi and/or teres major tendons, combined with extra-articular musculotendinous lengthening, significantly improved global shoulder function.
- Published
- 2008
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