Papers by KONSTANTINOS DITSIOS
Frontiers in Surgery, May 3, 2022
Introduction: Simultaneous olecranon and radial head fractures are rare injuries and due to this ... more Introduction: Simultaneous olecranon and radial head fractures are rare injuries and due to this factor, the outcome of the selected therapy is not widely studied. The aim of this study is to report and evaluate the functional outcome of the surgical treatment of simultaneous olecranon and radial head fractures. Materials and Methods: This is a retrospective study of fifteen patients with concomitant olecranon and radial head fractures presenting to our orthopedic department between 2015 and 2020. Olecranon fractures were classified by Mayo classification and radial head fractures by Mason classification and were managed appropriately. Main outcome measures include range of elbow extension-flexion, pronation-supination, Broberg and Morrey rating system score, and quickDASH score. Results: Our study included 6 females and 9 males with a mean age of 50 (r, 25-73). The mean of follow-up was 31 months (r, 3-51). Olecranon fractures were fixed with tension band with K-Wires or intramedullary compression screw or locking plate. Radial head fractures were fixed with headless compression screws or mini plate or replaced (radial head arthroplasty). Postoperatively, an average 115 • extension-flexion arc and 135 • pronation-supination arc was noted. The mean Broberg and Morrey rating system score was 78 and the mean quick DASH score was 25, indicating a good result. Two cases of heterotopic ossification were present and no nonunion was noted. Conclusion: Surgical management of concomitant olecranon and radial head fractures with appropriate technique can result in the restoration of a functional movement arc and a satisfactory outcome.
Journal of Bone and Joint Surgery, American Volume, Aug 1, 2006
Orthopedic Reviews
Background The purpose of this study is to compare the vascularized bone flaps (VBF) that are use... more Background The purpose of this study is to compare the vascularized bone flaps (VBF) that are used in operations for scaphoid non-union in smokers and non-smokers and to scrutinize if the better biological potential of the VBFs can counteract the negative influence of smoking on healing. Materials and Methods Our study included articles published until 2016, with scaphoid non-union patients who were operated on with a VBF or a VBG. Results Eighteen articles met eligibility criteria with 335 non-smokers and 136 smokers totally. Healing of the scaphoid non-union was significantly more probable in the non-smoking group (OR=5.54, p<0.001). Patients with avascular necrosis in the proximal pole of the scaphoid (AVNPP) and non-AVNPP showed that non-smoking favors a better healing rate in both of these subgroups (p<0.001 and p<0.001, respectively). Non-smokers have 11 times and the non-AVNPP patient’s 7.7 times greater probability of healing of the non-union. Meta-analysis of the d...
JAAOS: Global Research and Reviews
Journal of Orthopaedic Reports
Orthopedic Reviews, 2022
Non-union of radial neck fractures is a rare entity in adults, and conservative treatment is usua... more Non-union of radial neck fractures is a rare entity in adults, and conservative treatment is usually applied. However, when the patient is symptomatic, an optimal functional outcome can only be obtained after operative treatment. There is currently no consensus on the best surgical technique to treat this condition. We present a 34-year-old male with a radial head non-union and our proposed technique of using a cylindrical bone autograft harvested from the iliac crest and fixation with headless compression screws. At 12 months follow-up, the patient was pain free and had comparable range of motion to the uninjured side. We recommend a useful technique for the treatment of radial neck fracture nonunion. The preliminary postoperative outcomes show excellent results, while a longer follow-up and a greater number of cases are necessary to confirm the efficacy of this technique.
Journal of Plastic, Reconstructive & Aesthetic Surgery, 2022
Purpose of this study is to create an experimental model on rats for EMG evaluation of the supras... more Purpose of this study is to create an experimental model on rats for EMG evaluation of the supraspinatus muscle after traumatic rupture of its tendon. The population of this study consisted of 5 male rats of 300–400g. Under general anaesthesia we proceeded with traumatic rupture of the supraspinatus tendon and exposure of the muscle. The electrode of a stimulator was placed under suprascapular nerve and the supraspinatus tendon was sutured on a transducer for digital record of the produced signal. Initially we found the resting length and the electric intensity for higher muscle contracture. The parameters that were evaluated after single contracture (single twitch) were strength, time to peak, half relaxation time. Furthermore, it was evaluated the strength of tetanic contractures at 10,20,40,80,100 Hz (Stimulation for 350msec each time).Finally it was evaluated the muscle fatigue with stimulation at 40Hz for 250msec and total duration of 3 minutes. Fatigue index was calculated acc...
MUSCULOSKELETAL SURGERY, 2021
Reverse shoulder prostheses are increasingly used for treatment of rotator cuff tear arthropathy ... more Reverse shoulder prostheses are increasingly used for treatment of rotator cuff tear arthropathy and other degenerative shoulder diseases. In recent years, aiming for bone stock preservation has led to the design of metaphyseal humeral components without a stem. The aims of this study were to evaluate the complication and reintervention rates, as well as the clinical and radiographic outcomes in patients who underwent reverse shoulder arthroplasty (RSA) with stemless implants. A systematic review of the literature was completed until May 2020 using PubMed, EMBASE, CINAHL and Cochrane databases, according to PRISMA guidelines. The literature search revealed 2942 studies, of which 13 were included in this review, with a total of 517 patients and a mean follow-up between 6.4 and 101.6 months. The total complication rate was 6.5%, while 3.3% were humeral associated complications. Finally, the rate of shoulders that underwent a reintervention was 6.7%, with 1.4% relating to a humeral component reason. Stemless RSA led to substantial improvements in patient reported outcome measures and range of motion across all studies. Scapular notching was reported in 15.2%, and lucencies around humeral component were reported in 0.8% of shoulders. Stemless RSA resulted in low complication and reintervention rates at the mid-term follow-up. The reported clinical and radiological outcomes showed that these prostheses have at least equivalent outcomes with their stemmed counterparts. Further studies are required to investigate the long-term longevity and performance of the stemless humeral implants. Level IV; Systematic Review
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Papers by KONSTANTINOS DITSIOS