Raphael Lotan

Dr. Raphael Lotan

Wolfson Medical Center, H̱olon, Tel Aviv, Israel
orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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22 November 2022 in Journal of Clinical Medicine
Verified
Journal Article
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Oded HershkovichOded Hershkovich
Oded Hershkovich
MGMichael Paul Grevitt
Michael Paul Grevitt
Raphael LotanRaphael Lotan
Raphael Lotan
Objective: Examine Schober test’s (ST), Modified ST (MST), and Modified–Modified ST (MMST) surface markers’ accuracy in spanning lumbar L1-S1 motion segments and repeatability related to actual patient anatomy as measured on sagittal CT scans. Methods: The study included 25 patients of varying heights, weights, and gender without prior spinal surgery or deformity. Researchers assessed patients’ CT scans for ST, MST, and MMST skin levels of the measured cephalic and caudal endpoints. Results: The original ST failed to include at least one lumbar motion segment in all patients, omitting the L1-L2 motion segment in 17 patients and the L2-L3 in another eight. The additional cephalic length of the MST did not improve the inclusion of the actual L1-S1 components. The MMST measured 19 ‘patients’ entire L1-S1 motion segments, reaching a 76% accuracy rate. WMST, measuring 16 cm (instead of MMST’s 15 cm), improved the measurement significantly, measuring the L1-S1 motion segments in all cases (with 100% accuracy). Conclusion: ST and its modifications fail to span the L1-S1 motion segments and are thus prone to underestimating lumbar spine motion. This study shows that the WMST is much more accurate than previous modifications and is a better tool for evaluating lumbar spine motion.

5 October 2022 in Current Oncology
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Journal Article
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Oded HershkovichOded Hershkovich
Oded Hershkovich
MSMojahed Sakhnini
Mojahed Sakhnini
Oded HershkovichOded Hershkovich
Oded Hershkovich
ICIsrael Caspi
Israel Caspi
Raphael LotanRaphael Lotan
Raphael Lotan
Background Context: The role of radiotherapy versus surgery in treating acute metastatic spinal cord compression (AMSCC) has changed over the years. Purpose: Our study evaluates neurological and functional outcomes following urgent surgery and radiotherapy (USFR) versus urgent radiotherapy alone in treating AMSCC. Study Design/Setting: A retrospective cohort of 54 patients with AMSCC with variable neurological deficits. Overall, 32 patients were treated with USFR, and 22 received urgent radiotherapy alone. Outcome Measures: Neurological status regarding the Asia and Frankel scores, continence and ambulation, and Kranofsky’s functional score and patient life span comprised the outcome measures. Methods: This was a retrospective EMR study. Results: USFR and radiotherapy cohorts were similar in age, gender, tumor origin, and the number of spinal metastases. The most common cause of AMSCC was carcinoma of the breast (24.1%), followed by carcinoma of the lung (16.7%) and multiple myeloma (13%). Neurological status at AMSCC presentation was similar between cohorts regarding Asia and Frankel scores, continence and ambulation, and Kranofsky’s functional score. Following USFR, 59.3% of the patients had a motor strength improvement, 31.3% regained sphincter function, and 34.4% regained ambulation, while 90% of the patients treated by radiotherapy did not show any improvement. One patient under radiotherapy lost sphincter function. The treatment received did not affect the patient’s survival. A subanalysis of patients with a short life expectancy, by Tomita and Tokuhashi scores, showed missed prediction in 29.4% of cases. Conclusion: The study supports the beneficial effect of UFSR compared to urgent radiotherapy alone in treating AMSCC in all subgroups. Early surgery improved function, motor strength, sphincter control, and ambulation without affecting life span. Prognostic scores failed to predict life span in almost one-third of the patients, requiring further investigation.

30 August 2022 in Journal of Clinical Medicine
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Journal Article
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Oded HershkovichOded Hershkovich
Oded Hershkovich
BGBarak Gordon
Barak Gordon
EDEstela Derazne
Estela Derazne
DTDorit Tzur
Dorit Tzur
AAArnon Afek
Arnon Afek
Raphael LotanRaphael Lotan
Raphael Lotan
Background: Low back pain (LBP) is a widespread medical complaint affecting many people worldwide and costing billions. Studies suggest a link between LBP and joint hypermobility. This study aimed to examine the association between symptomatic joint hypermobility (SJH), LBP, and gender. Methods: Data were obtained from a medical database containing 17-year-old candidates’ records before recruitment into mandatory military service. According to the Regulations of Medical Fitness Determination, information on disability codes associated with LBP and SJH was retrieved. Results: According to this national survey, the prevalence of SJH is 0.11% (1355 cases out of 1,220,073 subjects). LBP was identified in 3.7% of the cohort (44,755 subjects). Subjects were further subdivided into LBP without objective findings (LBPWF) (3.5%) and LBP with objective findings (LBPOF) (0.2%). The association between SJH and LBP was examined: the Odds Ratio (OR) was 2.912 (p < 0.0001). The odds rations for LBPWF and LBPOF were further calculated to be 2.914 (p < 0.000) and 2.876 (p < 0.000), respectively. Subjects with SJH were almost three times more prone to LBPWF and LBPOF. Conclusion: SJH is strongly associated with LBP in young adults. Further pathophysiological research is needed.

31 May 2023 in Children
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Journal Article
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Raphael LotanRaphael Lotan
Raphael Lotan
RTRan Thein
Ran Thein
BGBarak Gordon
Barak Gordon
STShay Tenenbaum
Shay Tenenbaum
EDEstela Derazne
Estela Derazne
Oded HershkovichOded Hershkovich
Oded Hershkovich
Introduction: Traumatic long-bone fractures (TLFs) among children and adolescents are relatively common, with morbidity and economic consequences. Obesity has become a significant global concern. Studies have found an association between TLFs and BMI in the past but not in a large cross-sectional population study. Our study objective was to measure the incidence of TLFs in the 17-year-old general population and evaluate its association with BMI, body height, and gender. Methods: Data from a medical database containing all 17-year-old candidates’ records before recruitment into mandatory military service were retrieved as BMI, height, gender, and history of TLFs. Logistic regression models assessed the association between BMI and height to TLFs. Results: The records of 911,206 subjects (515,339 males) were reviewed. In total, 9.65% had a history of TLFs (12.25% and 6.25% for males/females, respectively). Higher BMI was associated with TLF, with a linear trend in the odds ratio (OR) for having TLFs. The strongest association was found between obese females and TLFs (OR = 1.364, p < 0.0001). Height was an independent factor positively associated with TLFs. The OR for a TLF in the highest height quintile was 1.238 (p < 0.001) for males and 1.411 (p < 0.001) for females compared to the lowest quintile. Although TLFs were more common in males, the OR for TLFs was more prominent in females. Conclusions: There is an association between BMI, body height, and TLFs in healthy adolescents. TLFs are more common in males, but the strongest association between overweight and obesity is evident in females.

4 February 2022 in Geriatric Orthopaedic Surgery & Rehabilitation
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Journal Article
Open access
Raphael LotanRaphael Lotan
Raphael Lotan
Oded HershkovichOded Hershkovich
Oded Hershkovich
YBYigal Bronstein
Yigal Bronstein
JFJoel Finkelstein
Joel Finkelstein
Objective: Examine the feasibility, safety, and results of a novel sacral percutaneous injection technique (“XX”) addressing both the vertical and horizontal aspects of sacral insufficiency fractures (SIF). Methods: Prospective cohort study. Eight consecutive SIF patients with immobility and pain investigated using CT and nuclear imaging confirmed “H"-type fracture. Demographics, pain level, and ambulation status were recorded. The long-term quality of life was evaluated using the ODI questionnaire and pain VAS scores. Sacroplasty procedures in prone positioning using fluoroscopy were used to insert 2 bone trochars through the S1 pedicles and 2 trochars through the sacral ale aiming toward the SIJ, thus forming 2 “X” trochar formations. Balloon kyphoplasty was done through the trocars, and PMM was injected. Postoperative ambulation and VAS were recorded. Results: Average age was 81.5 years (±3.4 years). The time from presenting symptoms to hospital admission was 2 days to 4 months. All patients were significantly limited with ambulation. None had a neurologic compromise. Sacroplasty was performed with 2 cases that required additional lumbar kyphoplasty. The mean operative time was 54 min (±14). The average exposure was 19 mGy (±12 mGy). Two patients had cement leaks. CT and X-rays revealed good cement filling of the fractures sacral alae and body of S1. The average postoperative hospitalization was 10 days. All patients reported postoperatively pain relief immediately and were able to walk better. Follow-up time was 17 ± 12 months. Follow-up VAS was 2.7 (±2) and ODI was 57.3% (±21%). Conclusion: “XX” technique showed good outcomes for patients with higher complexity SIF, using the same principles as for lumbar VPL/KPL, and was found to be safe and effective.

11 March 2025 in Journal of Clinical Medicine
Verified
Journal Article
Open access
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Raphael LotanRaphael Lotan
Raphael Lotan
CMChamad Moayad
Chamad Moayad
MSmojahed sakhnini
mojahed sakhnini
NRNugzar Rijini
Nugzar Rijini
AGAdam Lee Goldstein
Adam Lee Goldstein
Oded HershkovichOded Hershkovich
Oded Hershkovich
Background/Objectives: Proximal femoral fractures (PFFs) are a common worldwide ailment, causing high morbidity and mortality among the elderly, with one-year mortality estimated at 15–30%. This study aimed to identify factors influencing in-hospital patient survival after proximal femoral fracture surgery. Methods: A retrospective cohort study of patients over 65 admitted to an orthopedic surgery department due to a PFF over five years was carried out. Medical records, surgery reports, anesthesia and post-anesthesia care unit sheets, and laboratory archives were reviewed. Results: The study group consisted of 48 patients who died during the first postoperative week, while the control group consisted of 69 patients who were discharged for rehabilitation after a week. The study group was older, less active, and had higher rates of comorbidities. Anesthetic factors, such as the type of anesthesia and admixture of drugs, did not have a significant association with mortality. However, a binary logistic regression showed that age (OR = 1.15, p < 0.001), intraoperative lactate levels (OR = 5.86, p < 0.001), and post-anesthesia care unit (PACU) overnight stays (OR = 17.54, p < 0.001) were significantly associated with early mortality. Conclusions: The study highlights the challenge of identifying PFF patients at risk of early mortality and the need to better understand the decision-making algorithm to create a reliable scale that can predict mortality and adjust treatment. In our study, solid mortality parameters were age and intraoperative lactate levels. The most significant parameter was PACU overnight stay, which represents the anesthesiologist’s soft-skill-based decision that is challenging to scale and reproduce.