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Smolle MA, Andreou D, Wölfel J, Acem I, Aj Van De Sande M, Jeys L, Bonenkamp H, Pollock R, Tunn PU, Haas R, Posch F, Van Ginkel RJ, Verhoef C, Liegl-Atzwanger B, Moustafa-Hubmer D, Jost PJ, Leithner A, Szkandera J. Effect of radiotherapy on local recurrence, distant metastasis and overall survival in 1200 extremity soft tissue sarcoma patients. Retrospective analysis using IPTW-adjusted models. Radiother Oncol 2023; 189:109944. [PMID: 37832791 DOI: 10.1016/j.radonc.2023.109944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2023] [Revised: 09/18/2023] [Accepted: 10/02/2023] [Indexed: 10/15/2023]
Abstract
BACKGROUND AND PURPOSE Neoadjuvant (NRTX) and adjuvant radiotherapy (ARTX) reduce local recurrence (LR) risk in extremity soft tissue sarcoma (eSTS), yet their impact on distant metastasis (DM) and overall survival (OS) is less well defined. This study aimed at analysing the influence of NRTX/ARTX on all three endpoints using a retrospective, multicentre eSTS cohort. MATERIALS AND METHODS 1200 patients (mean age: 60.7 ± 16.8 years; 44.4 % females) were retrospectively included, treated with limb sparing surgery and curative intent for localised, high grade (G2/3) eSTS. 194 (16.2 %), 790 (65.8 %), and 216 (18.0 %) patients had received NRTX, ARTX and no RTX, respectively. For the resulting three groups (no RTX vs. NRTX, no RTX vs. ARTX, NRTX vs. ARTX) Fine&Gray models for LR and DM, and Cox-regression models for OS were calculated, with IPTW-modelling adjusting for imbalances between groups. RESULTS In the IPTW-adjusted analysis, NRTX was associated with lower LR-risk in comparison to no RTX (SHR [subhazard ratio]: 0.236; p = 0.003), whilst no impact on DM-risk (p = 0.576) or OS (p = 1.000) was found. IPTW-weighted analysis for no RTX vs. ARTX revealed a significant positive association between ARTX and lower LR-risk (SHR: 0.479, p = 0.003), but again no impact on DM-risk (p = 0.363) or OS (p = 0.534). IPTW-weighted model for NRTX vs. ARTX showed significantly lower LR-risk for NRTX (SHR for ARTX: 3.433; p = 0.003) but no difference regarding DM-risk (p = 1.000) or OS (p = 0.639). CONCLUSION NRTX and ARTX are associated with lower LR-risk, but do not seem to affect DM-risk or OS. NRTX may be favoured over ARTX as our results indicate better local control rates.
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Affiliation(s)
- Maria A Smolle
- Department of Orthopaedics and Trauma, Medical University of Graz, Auenbruggerplatz 5 8036, Graz, Austria
| | - Dimosthenis Andreou
- Department of Orthopaedics and Trauma, Medical University of Graz, Auenbruggerplatz 5 8036, Graz, Austria
| | - Judith Wölfel
- Department of Orthopaedics and Trauma, Medical University of Graz, Auenbruggerplatz 5 8036, Graz, Austria
| | - Ibtissam Acem
- Department of Surgical Oncology and Gastrointestinal Surgery, Erasmus MC Cancer Institute, Dr. Molewaterplein 40 3015 GD, Rotterdam, the Netherlands; Department of Orthopedic Surgery, Leiden University Medical Centre, Albinusdreef 2 2333 ZA, Leiden, the Netherlands
| | - Michiel Aj Van De Sande
- Department of Orthopedic Surgery, Leiden University Medical Centre, Albinusdreef 2 2333 ZA, Leiden, the Netherlands.
| | - Lee Jeys
- The Royal Orthopaedic Hospital, NHS Foundation Trust, Bristol Road South, Northfield, Birmingham, United Kingdom
| | - Han Bonenkamp
- Radboud University Medical Center, Department of Surgery, Nijmegen 6525GA, the Netherlands
| | - Rob Pollock
- Department of Orthopaedic Surgery, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, United Kingdom
| | - Per-Ulf Tunn
- Tumour Orthopaedics, HELIOS Klinikum Berlin-Buch, Schwanebecker Chaussee 50 13125, Berlin, Germany
| | - Rick Haas
- Department of Radiotherapy , The Netherlands Cancer Institute, Plesmanlaan 121 1066 CX, Amsterdam, the Netherlands
| | - Florian Posch
- Division of Clinical Oncology, Internal Medicine, Medical University of Graz, Auenbruggerplatz 15 8036, Graz, Austria
| | - Robert J Van Ginkel
- University of Groningen, University Medical Center Groningen (UMCG), Department of Surgery, Laboratory for Translational Surgical Oncology, Hanzeplein 1 9713 GZ, Groningen, the Netherlands
| | - Cornelis Verhoef
- Department of Surgical Oncology and Gastrointestinal Surgery, Erasmus MC Cancer Institute, Dr. Molewaterplein 40 3015 GD, Rotterdam, the Netherlands
| | - Bernadette Liegl-Atzwanger
- Diagnostic and Research Institute of Pathology, Medical University of Graz, Neue Stiftingtalstraße 6 8010, Graz, Austria
| | - Dalia Moustafa-Hubmer
- Department of Therapeutic Radiology and Oncology, Medical University of Graz, Auenbruggerplatz 32 8036, Graz, Austria
| | - Philipp J Jost
- Division of Clinical Oncology, Internal Medicine, Medical University of Graz, Auenbruggerplatz 15 8036, Graz, Austria
| | - Andreas Leithner
- Department of Orthopaedics and Trauma, Medical University of Graz, Auenbruggerplatz 5 8036, Graz, Austria
| | - Joanna Szkandera
- Division of Clinical Oncology, Internal Medicine, Medical University of Graz, Auenbruggerplatz 15 8036, Graz, Austria
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Snow M, Middleton L, Mehta S, Roberts A, Gray R, Richardson J, Kuiper JH, Smith A, White S, Roberts S, Griffiths D, Mohammed A, Moholkar K, Ashraf T, Green M, Hutchinson J, Bhullar T, Chitnis S, Shaw A, van Niekerk L, Hui A, Drogset JO, Knutsen G, McNicholas M, Bowditch M, Johnson D, Turner P, Chugh S, Hunt N, Ali S, Palmer S, Perry A, Davidson A, Hill P, Deo S, Satish V, Radford M, Langstaff R, Houlihan-Burne D, Spicer D, Phaltankar P, Hegab A, Marsh D, Cannon S, Briggs T, Pollock R, Carrington R, Skinner J, Bentley G, Price A, Schranz P, Mandalia V, O'Brien S. A Randomized Trial of Autologous Chondrocyte Implantation Versus Alternative Forms of Surgical Cartilage Management in Patients With a Failed Primary Treatment for Chondral or Osteochondral Defects in the Knee. Am J Sports Med 2023; 51:367-378. [PMID: 36661257 DOI: 10.1177/03635465221141907] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
BACKGROUND There are limited randomized controlled trials with long-term outcomes comparing autologous chondrocyte implantation (ACI) versus alternative forms of surgical cartilage management within the knee. PURPOSE To determine at 5 years after surgery whether ACI was superior to alternative forms of cartilage management in patients after a failed previous treatment for chondral or osteochondral defects in the knee. STUDY DESIGN Randomized controlled trial; Level of evidence, 1. METHODS In total, 390 participants were randomly assigned to receive either ACI or alternative management. Patients aged 18 to 55 years with one or two symptomatic cartilage defects who had failed 1 previous therapeutic surgical procedure in excess of 6 months prior were included. Dual primary outcome measures were used: (1) patient-completed Lysholm knee score and (2) time from surgery to cessation of treatment benefit. Secondary outcome measures included International Knee Documentation Committee and Cincinnati Knee Rating System scores, as well as number of serious adverse events. Analysis was performed on an intention-to-treat basis. RESULTS Lysholm scores were improved by 1 year in both groups (15.4 points [95% CI, 11.9 to 18.8] and 15.2 points [95% CI, 11.6 to 18.9]) for ACI and alternative, with this improvement sustained over the duration of the trial. However, no evidence of a difference was found between the groups at 5 years (2.9 points; 95% CI, -1.8 to 7.5; P = .46). Approximately half of the participants (55%; 95% CI, 47% to 64% with ACI) were still experiencing benefit at 5 years, with time to cessation of treatment benefit similar in both groups (hazard ratio, 0.97; 95% CI, 0.72 to 1.32; P > .99). There was a differential effect on Lysholm scores in patients without previous marrow stimulation compared with those with marrow stimulation (P = .03; 6.4 points in favor of ACI; 95% CI, -0.4 to 13.1). More participants experienced a serious adverse event with ACI (P = .02). CONCLUSION Over 5 years, there was no evidence of a difference in Lysholm scores between ACI and alternative management in patients who had previously failed treatment. Previous marrow stimulation had a detrimental effect on the outcome of ACI. REGISTRATION International Standard Randomised Controlled Trial Number: 48911177.
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Affiliation(s)
- Martyn Snow
- Orthopaedics Department, Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire, UK; School of Pharmacy and Bioengineering, Keele University, Staffordshire, UK
| | - Lee Middleton
- Birmingham Clinical Trials Unit, Birmingham University, Midlands, UK
| | - Samir Mehta
- Birmingham Clinical Trials Unit, Birmingham University, Midlands, UK
| | - Andrew Roberts
- Orthopaedics Department, Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire, UK
| | - Richard Gray
- Nuffield Department of Population Health, Oxford University, Oxfordshire, UK
| | - James Richardson
- Orthopaedics Department, Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire, UK; School of Pharmacy and Bioengineering, Keele University, Staffordshire, UK
| | - Jan Herman Kuiper
- School of Pharmacy and Bioengineering, Keele University, Staffordshire, UK
| | | | - Anthony Smith
- Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry
| | - Steve White
- Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry
| | - Simon Roberts
- Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry
| | - David Griffiths
- County Hospital, Stafford, University Hospitals of North Midlands NHS Trust, Stoke
| | - Aslam Mohammed
- Wrightington Wigan and Leigh teaching hospitals NHSFT, Wigan
| | | | | | - Marcus Green
- Royal Orthopaedic Hospital Birmingham, Birmingham
| | - James Hutchinson
- Edith Cavell Hospital Peterborough [now Peterborough City Hospital], NW Anglia NHSFT, Peterborough
| | - Tony Bhullar
- Edith Cavell Hospital Peterborough [now Peterborough City Hospital], NW Anglia NHSFT, Peterborough
| | | | - Andrew Shaw
- Royal Alexandra Hospital, Paisley; NHS Greater Glasgow and Clyde, Paisley
| | - Louw van Niekerk
- Friarage Hospital, South Tees; South Tees Hospitals NHSFT, Northallerton
| | - Anthony Hui
- The James Cook University Hospital, Middlesborough; South Tees Hospitals NHSFT, Middlesborough
| | | | | | | | - Mark Bowditch
- Ipswich Hospital, East Suffolk and North Essex NHSFT, Ipswich
| | | | | | - Sanjiv Chugh
- New Cross Hospital, Royal Wolverhampton NHS Trust, Wolverhampton
| | - Neil Hunt
- York Hospital, York and Scarborough Teaching Hospitals NHSFT, York
| | - Salman Ali
- Russels Hall Hospital, The Dudley Group NHSFT, Dudley
| | - Simon Palmer
- Worthing Hospital, University Hospitals Sussex NHSFT, Worthing
| | - Andrew Perry
- Frimley Park Hospital, Frimley Health NHSFT, Frimley Park
| | | | - Peter Hill
- Frimley Park Hospital, Frimley Health NHSFT, Frimley Park
| | - Sunny Deo
- The Great Western Hospitals NHSFT, Swindon
| | | | - Michael Radford
- Weston General Hospital, Weston Area Health NHS Trust, Weston-Super-Mare
| | - Ron Langstaff
- Hillingdon Hospital, The Hillingdon Hospitals NHSFT, Hillingdon
| | | | - Dominic Spicer
- St Mary's Hospital, Imperial College Healthcare NHS Trust, Paddington
| | - Padman Phaltankar
- North Manchester General Hospital, Manchester University NHSFT, Manchester
| | - Ahmed Hegab
- Fairfield General Hospital, Northern Care Alliance NHSFT, Bury
| | - David Marsh
- The Royal National Orthopaedic Hospital Stanmore, Stanmore
| | - Steve Cannon
- The Royal National Orthopaedic Hospital Stanmore, Stanmore
| | - Tim Briggs
- The Royal National Orthopaedic Hospital Stanmore, Stanmore
| | - Rob Pollock
- The Royal National Orthopaedic Hospital Stanmore, Stanmore
| | | | - John Skinner
- The Royal National Orthopaedic Hospital Stanmore, Stanmore
| | - George Bentley
- The Royal National Orthopaedic Hospital Stanmore, Stanmore
| | - Andrew Price
- Nuffield Orthopaedic Centre, Oxford University Hospitals NHSFT, Oxford
| | | | | | - Shaun O'Brien
- Sunderland Royal Hospital, South Tyneside and Sunderland NHSFT, Sunderland.,Investigation performed at the Robert Jones and Agnes Hunt Orthopaedic Hospital, Oswestry, Shropshire, UK
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Azamgarhi T, Warren S, Aston W, Pollock R, Gerrand C. Risk factors for recurrent infection in the surgical treatment of infected massive endoprostheses implanted for musculoskeletal tumours. J Orthop Surg Res 2023; 18:75. [PMID: 36717856 PMCID: PMC9887870 DOI: 10.1186/s13018-022-03446-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Accepted: 12/12/2022] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Infection is a devastating complication of endoprosthetic replacement (EPR) in orthopaedic oncology. Surgical treatments include debridement and/or one- or two-stage exchange. This study aims to determine the infection-free survival after surgical treatment for first and recurrent EPR infections and identify the risk factors associated with infection recurrence. METHODS This single-centre cohort study included all patients with primary bone sarcomas or metastatic bone disease treated for infected EPR between 2010 and 2020. Variables included soft tissue status using McPherson classification, tumour type, silver coating, chemotherapy, previous surgery and microorganisms identified. Data for all previous infections were collected. Survival analysis, with time to recurrent infection following surgical treatment, was calculated at 1, 2 and 4 years. Cox regression analysis was used to assess the influence of different variables on recurrent infection. RESULTS The cohort included 99 patients with a median age of 44 years (29-58 IQR) at the time of surgical treatment. The most common diagnoses were osteosarcoma and chondrosarcoma. One hundred and thirty-three surgical treatments for first or subsequent infections were performed. At 2 years of follow-up, overall success rates were as follows: two-stage exchange 55.3%, one-stage exchange 45.5%, DAIR with an exchange of modular components 44.6% and DAIR without exchange of modular components 24.7%. Fifty-one (52%) patients were infection-free at the most recent follow-up. Of the remaining 48 patients, 27 (27%) were on antibiotic suppression and 21 (21%) had undergone amputation. Significant risk factors for recurrent infection were the type of surgical treatment, with debridement alone as the highest risk (HR 4.75: 95%CI 2.43-9.30; P < 0.001); significantly compromised soft tissue status (HR 4.41: 95%CI 2.18-8.92; P = 0.001); and infections due to Enterococcus spp.. (HR 7.31: 95%CI 2.73-19.52); P = 0.01). CONCLUSIONS Two-stage exchange with complete removal of all components where feasible is associated with the lowest risk of recurrent infection. Poor soft tissues and enterococcal infections are associated with higher risks of recurrent infection. Treatment demands an appropriate multidisciplinary approach. Patients should be counselled appropriately about the risk of recurrent infection before embarking on complex treatment.
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Affiliation(s)
- Tariq Azamgarhi
- grid.412945.f0000 0004 0467 5857Pharmacy Department, Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, HA7 4LP UK
| | - Simon Warren
- grid.412945.f0000 0004 0467 5857Bone Infection Unit, Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, HA7 4LP UK ,grid.437485.90000 0001 0439 3380The Royal Free Hospital NHS Foundation Trust, Hampstead, London, UK
| | - Will Aston
- grid.412945.f0000 0004 0467 5857Division of Orthopaedic Oncology, Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, HA7 4LP UK
| | - Rob Pollock
- grid.412945.f0000 0004 0467 5857Division of Orthopaedic Oncology, Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, HA7 4LP UK
| | - Craig Gerrand
- grid.412945.f0000 0004 0467 5857Division of Orthopaedic Oncology, Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, HA7 4LP UK
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Sacchetti F, Aston W, Pollock R, Gikas P, Cuomo P, Gerrand C. Endoprosthetic replacement of the proximal tibia for oncological conditions. Bone Jt Open 2022; 3:733-740. [PMID: 36129463 PMCID: PMC9533251 DOI: 10.1302/2633-1462.39.bjo-2022-0069.r1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Aims The proximal tibia (PT) is the anatomical site most frequently affected by primary bone tumours after the distal femur. Reconstruction of the PT remains challenging because of the poor soft-tissue cover and the need to reconstruct the extensor mechanism. Reconstructive techniques include implantation of massive endoprosthesis (megaprosthesis), osteoarticular allografts (OAs), or allograft-prosthesis composites (APCs). Methods This was a retrospective analysis of clinical data relating to patients who underwent proximal tibial arthroplasty in our regional bone tumour centre from 2010 to 2018. Results A total of 76 patients fulfilled the inclusion criteria and were included in the study. Mean age at surgery was 43.2 years (12 to 86 (SD 21)). The mean follow-up period was 60.1 months (5.4 to 353). In total 21 failures were identified, giving an overall failure rate of 27.6%. Prosthesis survival at five years was 75.5%, and at ten years was 59%. At last follow-up, mean knee flexion was 89.8° (SD 36°) with a mean extensor lag of 18.1° (SD 24°). In univariate analysis, factors associated with better survival of the prosthesis were a malignant or metastatic cancer diagnosis (versus benign), with a five- and ten-year survival of 78.9% and 65.7% versus 37.5% (p = 0.045), while in-hospital length of stay longer than nine days was also associated with better prognosis with five- and ten-year survival rates at 84% and 84% versus 60% and 16% (p < 0.001). In multivariate analysis, only in-hospital length of stay was associated with longer survival (hazard ratio (HR) 0.23, 95% confidence interval (CI) 0.08 to 0.66). Conclusion We have shown that proximal tibial arthroplasty with endoprosthesis is a safe and reliable method for reconstruction in patients treated for orthopaedic oncological conditions. Either modular or custom implants in this series performed well. Cite this article: Bone Jt Open 2022;3(9):733–740.
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Affiliation(s)
- Federico Sacchetti
- Divisione di Ortopedia Oncologica e Ricostruttiva, Careggi University Hospital (Azienda Ospedaliero Universitaria Careggi), Florence, Italy
| | - Will Aston
- Royal National Orthopaedic Hospital NHS Trust, London, UK
| | - Rob Pollock
- Royal National Orthopaedic Hospital NHS Trust, London, UK
| | - Panos Gikas
- Royal National Orthopaedic Hospital NHS Trust, London, UK
| | - Pierluigi Cuomo
- Department of Bioengineering, Imperial College London, London, UK
| | - Craig Gerrand
- Royal National Orthopaedic Hospital NHS Trust, London, UK
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Waddington J, Zhou R, Coleman O, Wundervald B, Parnell A, Mease PJ, Chandran V, Fallon L, Chapman D, Pollock R, Deng S, Fitzgerald O, Pennington S. POS1045 MASS SPECTROMETRY-BASED PROTEOMICS FOR THE IDENTIFICATION OF CANDIDATE SERUM PROTEIN BIOMARKERS THAT MAY PREDICT TREATMENT RESPONSE IN PATIENTS WITH PSORIATIC ARTHRITIS. Ann Rheum Dis 2022. [DOI: 10.1136/annrheumdis-2022-eular.2091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BackgroundThe Group for Research and Assessment of Psoriasis and Psoriatic Arthritis (GRAPPA) has identified a need for biomarkers to predict which patients (pts) with psoriatic arthritis (PsA) are most likely to respond to a specific therapy. Failure to identify effective treatments early on results in sub-optimal PsA disease management. Tofacitinib is an oral JAK inhibitor for the treatment of PsA. The efficacy and safety of tofacitinib 5 and 10 mg twice daily (BID) in pts with PsA have been demonstrated.1,2ObjectivesTo identify protein biomarker candidates, which may identify responders (R) vs non-responders (NR) to treatment of PsA, using mass spectrometry-based proteomics.MethodsBaseline (BL) serum samples from pts with PsA receiving tofacitinib 5 or 10 mg BID, adalimumab or placebo in OPAL Broaden (NCT01877668)1 were analysed. Pts were identified as R and NR based on the Psoriatic Arthritis Disease Activity Score (PASDAS) at Month 3; pts with lowest PASDAS ≤3.2 were defined as R, those with highest PASDAS >3.2 as NR. Two proteomic strategies were employed for analysis of BL serum samples: (1) targeted mass spectrometric multiple reaction monitoring analysis of an in-house panel (‘PAPRICA’) comprising of 206 proteins, originally developed to distinguish between different arthropathies, and (2) unbiased discovery liquid chromatography-tandem mass spectrometry (LC-MS/MS). PAPRICA data were normalised using two methods: normalisation to stable isotopically labelled peptide spike-ins (SIL; corrects for fluctuations in sample injections/mass spectrometry loading amounts), and normalisation to an endogenous peptide panel representing total serum protein abundance (TSPA; corrects for different amounts of total serum protein across samples). Univariate analyses (Student’s t-test) and multivariate machine learning Random Forest (RF) modelling3 were performed. Univariate analysis of the PAPRICA panel of proteins was performed on R vs NR, and within each treatment arm, with no adjustment for multiplicity.Results96 pts were identified as 47 R and 49 NR based on PASDAS scores. Of pts receiving tofacitinib 5 or 10 mg BID (data pooled), adalimumab or placebo, there were 26 R vs 26 NR, 13 R vs 13 NR and 8 R vs 10 NR, respectively. Results from univariate analysis identified 110 differentially expressed PAPRICA peptides between R vs NR (p≤0.05). RF multivariate analysis of all data (n=96) revealed a set of PAPRICA peptide signatures with the ability to differentiate between R and NR. Two RF models generated from the PAPRICA peptide data had training area under curves (AUCs) 0.956 [95% CI 0.93, 0.99] (TSPA) and 0.959 [95% CI 0.94, 0.98] (SIL). In total, 115 PAPRICA peptides representing 87 proteins were identified as potential biomarkers for predicting treatment response. Using unbiased discovery LC-MS/MS, univariate analysis of all data revealed one candidate peptide biomarker (p≤0.05). RF modelling revealed peptides that contributed to two prediction models with training AUCs of 0.903 [95% CI 0.86, 0.96] and 0.928 [95% CI 0.89, 0.96]. In total, from unbiased discovery LC-MS/MS, 66 peptides representing 39 proteins that may act as potential peptide biomarkers were identified in univariate and multivariate analyses.ConclusionUsing two complementary proteomic approaches and a combination of univariate and machine learning models, a total of 181 candidate biomarker peptides corresponding to 106 proteins have been identified that may act as potential biomarkers for predicting response to treatment of PsA. Further study is required to verify and evaluate these candidate biomarkers, and we will report how these proteins map to biological processes, pathways and networks.References[1]Mease et al. N Engl J Med 2017; 377: 1537-1550.[2]Gladman et al. N Engl J Med 2017; 377: 1525-1536.[3]Breiman. Machine Learning 2001; 45: 5-32.AcknowledgementsStudy sponsored by Pfizer Inc. Medical writing support was provided by Lauren Hogarth, CMC Connect, and funded by Pfizer Inc.Disclosure of InterestsJames Waddington Employee of: Atturos, Ruoyi Zhou Employee of: Atturos, Orla Coleman Employee of: Atturos, Bruna Wundervald Employee of: Atturos, Andrew Parnell: None declared, Philip J Mease Speakers bureau: AbbVie, Amgen, Janssen, Novartis, Pfizer Inc and UCB, Consultant of: AbbVie, Amgen, Bristol-Myers Squibb, Celgene, CorEvitas, Eli Lilly, Galapagos, Gilead Sciences, GlaxoSmithKline, Janssen, Merck, Novartis, Pfizer Inc, Sun Pharma and UCB, Grant/research support from: AbbVie, Amgen, Bristol-Myers Squibb, Celgene, Eli Lilly, Janssen, Novartis, Pfizer Inc, Sun Pharma and UCB, Vinod Chandran Consultant of: AbbVie, Amgen, BMS, Eli Lilly, Janssen, Novartis, Pfizer Inc and UCB, Grant/research support from: AbbVie, Amgen, Eli Lilly, Lara Fallon Shareholder of: Pfizer Inc, Employee of: Pfizer Inc, Douglass Chapman Shareholder of: Pfizer Inc, Employee of: Pfizer Inc, Remy Pollock Shareholder of: Pfizer Inc, Employee of: Pfizer Inc, Shibing Deng Shareholder of: Pfizer Inc, Employee of: Pfizer Inc, Oliver FitzGerald Shareholder of: Atturos, Speakers bureau: AbbVie, Amgen, Bristol-Myers Squibb, Celgene, Eli Lilly, Janssen, Novartis, Pfizer Inc and UCB, Employee of: University College Dublin, Stephen Pennington Shareholder of: Atturos, Employee of: University College Dublin
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Rajasekaran RB, Ashford R, Stevenson JD, Pollock R, Rankin KS, Patton JT, Gupta S, Cosker TDA. Reconstruction after resection of a proximal humeral tumour : what challenges remain? Bone Joint J 2022; 104-B:3-5. [PMID: 34969269 DOI: 10.1302/0301-620x.104b1.bjj-2021-1410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Raja B Rajasekaran
- Department of Orthopaedics, University of Oxford, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Oxford, UK
| | - Robert Ashford
- East Midlands Sarcoma Service, Nottingham University Hospitals, Nottingham, UK
| | | | - Rob Pollock
- Royal National Orthopaedic Hospital NHS Trust, Stanmore, UK
| | - Kenneth S Rankin
- North of England Bone and Soft Tissue Tumour Service, Newcastle upon Tyne University Hospitals, Newcastle upon Tyne, UK
| | | | - Sanjay Gupta
- Glasgow Royal Infirmary, University of Glasgow, Glasgow, UK
| | - Thomas D A Cosker
- Department of Orthopaedics, University of Oxford, Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Oxford, UK
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Murphy B, Pollock R, Ramchurn S, Hurson C. 1244 The TAL Suction Retractor: A Simple Technique for Visualising the Transverse Acetabular Ligament (TAL) During Total Hip Replacement (THR) Surgery. Br J Surg 2021. [DOI: 10.1093/bjs/znab258.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Introduction
The transverse acetabular ligament (TAL) is an anatomical landmark that is of particular use during primary total hip replacements (THR). Visualisation is important to aid the orientation of the acetabular cup and it is a structure that can be identified in virtually every primary hip replacement surgery. We introduce a simple technique to facilitate this.
Method
A thoracic suction catheter is taped to the distal end of a blunt Hohmann’s retractor with two steristrips wrapping around the catheter and retractor leaving approximately 1-1.5cm of retractor exposed. Our preference is for a thoracic suction catheter with side holes and a proximal end which allows direct connection with the tip of the Yankauer suction. The blunt Hohmann’s retractor is used as the inferior acetabular retractor in the usual way, placed inferior to the transverse acetabular ligament, resting on the posterior ischial surface. The catheter suction tip should lie just under the TAL, in the most dependant point of the wound.
Results
The TAL suction catheter can be used continuously or intermittently to facilitate visualisation of the TAL during reaming, trialling, and acetabular cup placement. The TAL suction retractor provides suction in the most dependant point of the surgical wound, preventing unnecessary movement and facilitates a clutter-free surgical field leading to more streamlined and efficient surgery with potential reduced operative times.
Conclusions
The transverse acetabular ligament (TAL) suction retractor is a simple improvised surgical tool that makes it easier to visualise the TAL during acetabular preparation in total hip replacements.
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Affiliation(s)
- B Murphy
- Department of Trauma & Orthopaedic Surgery, St Vincent's University Hospital, Dublin, Ireland
| | - R Pollock
- Department of Trauma & Orthopaedic Surgery, St Vincent's University Hospital, Dublin, Ireland
| | - S Ramchurn
- Department of Trauma & Orthopaedic Surgery, St Vincent's University Hospital, Dublin, Ireland
| | - C Hurson
- Department of Trauma & Orthopaedic Surgery, St Vincent's University Hospital, Dublin, Ireland
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8
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Berkeley R, Lindsay D, Pollock R, Saifuddin A. Painless wrist lump. Skeletal Radiol 2021; 50:1465-1466. [PMID: 33458780 DOI: 10.1007/s00256-020-03698-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 12/07/2020] [Accepted: 12/13/2020] [Indexed: 02/02/2023]
Affiliation(s)
- Rupert Berkeley
- Department of Radiology, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK.
| | - Daniel Lindsay
- Department of Pathology, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
| | - Rob Pollock
- Department of Surgery, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
| | - Asif Saifuddin
- Department of Radiology, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
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Rajasekaran RB, Ashford RU, Cosker TDA, Stevenson JD, Jeys L, Pollock R, Rankin KS, Cool P, Patton JT, Whitwell D, Gibbons CLMH, Carr A. What Proportion of Patients with Bone and Soft Tissue Tumors Contracted Coronavirus-19 and Died From Surgical Procedures During the Initial Period of the COVID-19 Pandemic? Results From the Multicenter British Orthopaedic Oncology Society Observational Study. Clin Orthop Relat Res 2021; 479:1158-1166. [PMID: 33196585 PMCID: PMC8051862 DOI: 10.1097/corr.0000000000001568] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Accepted: 10/13/2020] [Indexed: 01/31/2023]
Abstract
BACKGROUND Delivering uninterrupted cancer treatment to patients with musculoskeletal tumors has been essential during the rapidly evolving coronavirus 2019 (COVID-19) pandemic, as delays in management can be detrimental. Currently, the risk of contracting COVID-19 in hospitals when admitted for surgery and the susceptibility due to adjuvant therapies and associated mortality due to COVID-19 is unknown, but knowledge of these potential risks would help treating clinicians provide appropriate cancer care. QUESTIONS/PURPOSES (1) What is the risk of hospital-acquired COVID-19 in patients with musculoskeletal tumors admitted for surgery during the initial period of the pandemic? (2) What is the associated mortality in patients with musculoskeletal tumors who have contracted COVID-19? (3) Are patients with musculoskeletal tumors who have had neoadjuvant therapy (chemotherapy or radiation) preoperatively at an increased risk of contracting COVID-19? (4) Is a higher American Society of Anesthesiologists (ASA) grade in patients with musculoskeletal tumors associated with an increased risk of contracting COVID-19 when admitted to the hospital for surgery? METHODS This retrospective, observational study analyzed patients with musculoskeletal tumors who underwent surgery in one of eight specialist centers in the United Kingdom, which included the five designated cancer centers in England, one specialist soft tissue sarcoma center, and two centers from Scotland between March 12, 2020 and May 20, 2020. A total of 347 patients were included, with a median (range) age of 53 years (10 to 94); 60% (207 of 347) were men, and the median ASA grade was II (I to IV). These patients had a median hospital stay of 8 days (0 to 53). Eighteen percent (61 of 347) of patients had received neoadjuvant therapy (8% [27] chemotherapy, 8% [28] radiation, 2% [6] chemotherapy and radiation) preoperatively. The decision to undergo surgery was made in adherence with United Kingdom National Health Service and national orthopaedic oncology guidelines, but specific data with regard to the number of patients within each category are not known. Fifty-nine percent (204 of 347) were negative in PCR testing done 48 hours before the surgical procedure; the remaining 41% (143 of 347) were treated before preoperative PCR testing was made mandatory, but these patients were asymptomatic. All patients were followed for 30 days postoperatively, and none were lost to follow-up during that period. The primary outcome of the study was contracting COVID-19 in the hospital after admission. The secondary outcome was associated mortality after contracting COVID-19 within 30 days of the surgical procedure. In addition, we assessed whether there is any association between ASA grade or neoadjuvant treatment and the chances of contracting COVID-19 in the hospital. Electronic patient record system and simple descriptive statistics were used to analyze both outcomes. RESULTS Four percent (12 of 347) of patients contracted COVID-19 in the hospital, and 1% (4 of 347) of patients died because of COVID-19-related complications. Patients with musculoskeletal tumors who contracted COVID-19 had increased mortality compared with patients who were asymptomatic or tested negative (odds ratio 55.33 [95% CI 10.60 to 289.01]; p < 0.001).With the numbers we had, we could not show that adjuvant therapy had any association with contracting COVID-19 while in the hospital (OR 0.94 [95% CI 0.20 to 4.38]; p = 0.93). Increased ASA grade was associated with an increased likelihood of contracting COVID-19 (OR 58 [95% CI 5 to 626]; p < 0.001). CONCLUSION Our results show that surgeons must be mindful and inform patients that those with musculoskeletal tumors are at risk of contracting COVID-19 while admitted to the hospital and some may succumb to it. Hospital administrators and governmental agencies should be aware that operations on patients with lower ASA grade appear to have lower risk and should consider restructuring service delivery to ensure that procedures are performed in designated COVID-19-restricted sites. These measures may reduce the likelihood of patients contracting the virus in the hospital, although we cannot confirm a benefit from this study. Future studies should seek to identify factors influencing these outcomes and also compare surgical complications in those patients with and without COVID-19. LEVEL OF EVIDENCE Level III, therapeutic study.
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10
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Schutgens EM, Picci P, Baumhoer D, Pollock R, Bovée JVMG, Hogendoorn PCW, Dijkstra PDS, Rueten-Budde AJ, Jutte PC, Traub F, Leithner A, Tunn PU, Funovics P, Sys G, San-Julian M, Schaap GR, Dürr HR, Hardes J, Healey J, Capanna R, Biau D, Gomez-Brouchet A, Wunder J, Cosker TDA, Laitinen MK, Niu X, Kostiuk V, van de Sande MAJ. Surgical Outcome and Oncological Survival of Osteofibrous Dysplasia-Like and Classic Adamantinomas: An International Multicenter Study of 318 Cases. J Bone Joint Surg Am 2020; 102:1703-1713. [PMID: 33027124 PMCID: PMC8569856 DOI: 10.2106/jbjs.19.01056] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Osteofibrous dysplasia-like adamantinoma (OFD-AD) and classic adamantinoma (AD) are rare, neoplastic diseases with only limited data supporting current treatment protocols. We believe that our retrospective multicenter cohort study is the largest analysis of patients with adamantinoma to date. The primary purpose of this study was to describe the disease characteristics and evaluate the oncological outcomes. The secondary purpose was to identify risk factors for local recurrence after surgical treatment and propose treatment guidelines. METHODS Three hundred and eighteen confirmed cases of OFD-AD and AD for which primary treatment was carried out between 1985 and 2015 were submitted by 22 tertiary bone tumor centers. Proposed clinical risk factors for local recurrence such as size, type, and margins were analyzed using univariable and multivariate Cox regression analysis. RESULTS Of the 318 cases, 128 were OFD-AD and 190 were AD. The mean age at diagnosis was 17 years (median, 14.5 years) for OFD-AD and 32 years (median, 28 years) for AD; 53% of the patients were female. The mean tumor size in the OFD-AD and AD groups combined was 7.8 cm, measured histologically. Sixteen percent of the patients sustained a pathological fracture prior to treatment. Local recurrence was recorded in 22% of the OFD-AD cases and 24% of the AD cases. None of the recurrences in the OFD-AD group progressed to AD. Metastatic disease was found in 18% of the AD cases and fatal disease, in 11% of the AD cases. No metastatic or fatal disease was reported in the OFD-AD group. Multivariate Cox regression analysis demonstrated that uncontaminated resection margins (hazard ratio [HR] = 0.164, 95% confidence interval [CI] = 0.092 to 0.290, p < 0.001), pathological fracture (HR = 1.968, 95% CI = 1.076 to 3.600, p = 0.028), and sex (female versus male: HR = 0.535, 95% CI = 0.300 to 0.952, p = 0.033) impacted the risk of local recurrence. CONCLUSIONS OFD-AD and AD are parts of a disease spectrum but should be regarded as different entities. Our results support reclassification of OFD-AD into the intermediate locally aggressive category, based on the local recurrence rate of 22% and absence of metastases. In our study, metastatic disease was restricted to the AD group (an 18% rate). We advocate wide resection with uncontaminated margins including bone and involved periosteum for both OFD-AD and AD. LEVEL OF EVIDENCE Prognostic Level IV. See Instructions for Authors for a complete description of levels of evidence.
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Affiliation(s)
- E M Schutgens
- Departments of Orthopedic Surgery (E.M.S., P.D.S.D., and M.A.J.v.d.S.), Histopathology (J.V.M.G.B.), and Pathology (P.C.W.H.), Leiden University Medical Center, Leiden, the Netherlands
- London Sarcoma Service, Royal National Orthopaedic Hospital, Stanmore, United Kingdom
| | - P Picci
- Medical Oncology, Musculoskeletal Oncology Department, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - D Baumhoer
- Bone Tumour Reference Centre, Institute of Pathology, University Hospital and University of Basel, Basel, Switzerland
| | - R Pollock
- London Sarcoma Service, Royal National Orthopaedic Hospital, Stanmore, United Kingdom
| | - J V M G Bovée
- Departments of Orthopedic Surgery (E.M.S., P.D.S.D., and M.A.J.v.d.S.), Histopathology (J.V.M.G.B.), and Pathology (P.C.W.H.), Leiden University Medical Center, Leiden, the Netherlands
| | - P C W Hogendoorn
- Departments of Orthopedic Surgery (E.M.S., P.D.S.D., and M.A.J.v.d.S.), Histopathology (J.V.M.G.B.), and Pathology (P.C.W.H.), Leiden University Medical Center, Leiden, the Netherlands
| | - P D S Dijkstra
- Departments of Orthopedic Surgery (E.M.S., P.D.S.D., and M.A.J.v.d.S.), Histopathology (J.V.M.G.B.), and Pathology (P.C.W.H.), Leiden University Medical Center, Leiden, the Netherlands
| | - A J Rueten-Budde
- Mathematical Institute, Leiden University, Leiden, the Netherlands
| | - P C Jutte
- Department of Orthopedics, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - F Traub
- Orthopedic Surgery, University of Tübingen, Tübingen, Germany
| | - A Leithner
- Department of Orthopedics and Trauma, Medical University of Graz, Graz, Austria
| | - P-U Tunn
- Orthopedic Surgery, Helios-Clinics, Berlin, Germany
| | - P Funovics
- Orthopedic Surgery, Medical University of Vienna, Vienna, Austria
| | - G Sys
- Orthopedic Surgery, Ghent University Hospital, Ghent, Belgium
| | - M San-Julian
- Orthopedic Surgery, University of Navarra, Pamplona, Spain
| | - G R Schaap
- Orthopedic Surgery, Academic Medical Center, Amsterdam, the Netherlands
| | - H R Dürr
- Department of Tumor Orthopedics and Sarcoma Surgery, University Hospital Essen, Essen, Germany
| | - J Hardes
- Musculoskeletal Oncology, Department of Orthopedic Surgery, Physical Medicine and Rehabilitation, University Hospital, LMU Munich, Munich, Germany
| | - J Healey
- Orthopedic Surgery, Memorial Sloan Kettering Cancer Center, New York, NY
| | - R Capanna
- Department of Orthopaedics, S. Chiara University Hospital, University of Pisa, Italy
| | - D Biau
- Orthopedic Surgery, Cochin Hospital, Paris, France
| | - A Gomez-Brouchet
- Department of Histopathology, University Medical Center, Toulouse, France
| | - J Wunder
- University Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Ontario, Canada
| | - T D A Cosker
- Orthopedic Surgery, Nuffield Orthopedic Center, Oxford, United Kingdom
| | - M K Laitinen
- Orthopedic Surgery, Helsinki University Hospital, Helsinki, Finland
| | - X Niu
- Department of Orthopedic Oncology, Beijing Jishuitan Hospital, Beijing, People's Republic of China
| | - V Kostiuk
- Orthopedic Surgery, National Cancer Institute Ukraine, Kiev, Ukraine
| | - M A J van de Sande
- Departments of Orthopedic Surgery (E.M.S., P.D.S.D., and M.A.J.v.d.S.), Histopathology (J.V.M.G.B.), and Pathology (P.C.W.H.), Leiden University Medical Center, Leiden, the Netherlands
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Harrison A, Babinsky L, Pollock R, Doyle L, Werner-Wasik M, Hurwitz M. Building and Assessing Organization Reliability. Int J Radiat Oncol Biol Phys 2019. [DOI: 10.1016/j.ijrobp.2019.06.1127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Jassim SS, Hilton T, Saifuddin A, Pollock R. The incidence and outcome of chondral tumours as incidental findings on investigation of shoulder pathology. Eur J Orthop Surg Traumatol 2019; 30:97-102. [DOI: 10.1007/s00590-019-02532-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2019] [Accepted: 08/13/2019] [Indexed: 12/14/2022]
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13
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Sambri A, Staals E, Medellin MR, Abudu A, Gikas P, Pollock R, Briggs TWR, Donati DM, Manfrini M. Stanmore noninvasive extendible endoprosthesis in the treatment of bone sarcoma in the preadolescent. J Surg Oncol 2019; 120:176-182. [DOI: 10.1002/jso.25501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 04/03/2019] [Accepted: 04/26/2019] [Indexed: 11/11/2022]
Affiliation(s)
- Andrea Sambri
- Orthopedic OncologyIRCCS Istituto Ortopedico RizzoliBologna Italy
| | - Eric Staals
- Orthopedic OncologyIRCCS Istituto Ortopedico RizzoliBologna Italy
| | - Manuel Ricardo Medellin
- Orthopedic OncologyRoyal Orthopaedic Hospital NHS TrustBirmingham UK
- Orthopedic OncologyInstituto Nacional de CancerologiaBogotà Colombia
| | - Adesegun Abudu
- Orthopedic OncologyRoyal Orthopaedic Hospital NHS TrustBirmingham UK
| | - Panagiotis Gikas
- Orthopedic OncologyRoyal National Orthopaedic Hospital NHS TrustLondon UK
| | - Rob Pollock
- Orthopedic OncologyRoyal National Orthopaedic Hospital NHS TrustLondon UK
| | - Tim WR Briggs
- Orthopedic OncologyRoyal National Orthopaedic Hospital NHS TrustLondon UK
| | | | - Marco Manfrini
- Orthopedic OncologyIRCCS Istituto Ortopedico RizzoliBologna Italy
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Abstract
We present a first case of synovial sarcoma in an HIV-positive pregnant woman. This 28-year-old woman was diagnosed with synovial sarcoma, a high-grade malignant soft tissue sarcoma, involving her left thigh during the first trimester of her pregnancy. She underwent surgical treatment in the form of hip disarticulation at 30 weeks' gestation. She was subsequently delivered by emergency caesarean section (CS) at 34 weeks' gestation when she presented with wound sepsis and a scan revealed static growth in a small for gestational age fetus. Prompt diagnosis and treatment of this aggressive tumour is important and should involve a multidisciplinary approach, with a balanced consideration of the maternal and fetal outcomes.
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Affiliation(s)
| | | | - Rob Pollock
- Trauma and Orthopaedics, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Sarah J E Edwards
- Hertfordshire HIV Service, Chelsea and Westminster Hospital, London, UK
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Dhinsa BS, DeLisa M, Pollock R, Flanagan AM, Whelan J, Gregory J. Dedifferentiated Chondrosarcoma Demonstrating Osteosarcomatous Differentiation. Oncol Res Treat 2018; 41:456-460. [DOI: 10.1159/000487803] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2017] [Accepted: 02/20/2018] [Indexed: 11/19/2022]
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Broderick C, Hopkins S, Mack DJF, Aston W, Pollock R, Skinner JA, Warren S. Delays in the diagnosis and treatment of bone and joint tuberculosis in the United Kingdom. Bone Joint J 2018; 100-B:119-124. [DOI: 10.1302/0301-620x.100b1.bjj-2017-0357.r1] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Aims Tuberculosis (TB) infection of bones and joints accounts for 6.7% of TB cases in England, and is associated with significant morbidity and disability. Public Health England reports that patients with TB experience delays in diagnosis and treatment. Our aims were to determine the demographics, presentation and investigation of patients with a TB infection of bones and joints, to help doctors assessing potential cases and to identify avoidable delays. Patients and Methods This was a retrospective observational study of all adults with positive TB cultures on specimens taken at a tertiary orthopaedic centre between June 2012 and May 2014. A laboratory information system search identified the patients. The demographics, clinical presentation, radiology, histopathology and key clinical dates were obtained from medical records. Results A total of 31 adult patients were identified. Their median age was 37 years (interquartile range (IQR): 29 to 53); 21 (68%) were male; 89% were migrants. The main sites affected were joints (10, 32%), the spine (8, 26%) and long bones (6, 19%); 8 (26%) had multifocal disease. The most common presenting symptoms were pain (29/31, 94%) and swelling (26/28, 93%). ‘Typical’ symptoms of TB, such as fever, sweats and weight loss, were uncommon. Patients waited a median of seven months (IQR 3 to 13.5) between the onset of symptoms and referral to the tertiary centre and 2.3 months (IQR 1.6 to 3.4.)) between referral and starting treatment. Radiology suggested TB in 26 (84%), but in seven patients (23%) the initial biopsy specimens were not sent for mycobacterial culture, necessitating a second biopsy. Rapid Polymerase Chain Reaction-based testing for TB using Xpert MTB/RIF was performed in five patients; 4 (80%) tested positive for TB. These patients had a reduced time between the diagnostic biopsy and starting treatment than those whose samples were not tested (median eight days versus 36 days, p = 0.016). Conclusion Patients with bone and joint TB experience delays in diagnosis and treatment, some of which are avoidable. Maintaining a high index of clinical suspicion and sending specimens for mycobacterial culture are crucial to avoid missing cases. Rapid diagnostic tests reduce delays and should be performed on patients with radiological features of TB. Cite this article: Bone Joint J 2018;100-B:119–24.
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Affiliation(s)
- C. Broderick
- Directorate of Infection, Royal Free London
NHS Foundation Trust, Pond Street, London
NW3 2QG, UK
| | - S. Hopkins
- Directorate of Infection, Royal Free London
NHS Foundation Trust and Royal National Orthopaedic Hospital NHS
Trust, Pond Street, London
NW3 2QG, Brockley Hill, Stanmore, Middlesex
HA7 4LP, UK
| | - D. J. F. Mack
- Directorate of Infection, Royal Free London
NHS Foundation Trust and Royal National Orthopaedic Hospital NHS
Trust, Pond Street, London
NW3 2QG, Brockley Hill, Stanmore, Middlesex
HA7 4LP, UK
| | - W. Aston
- Royal National Orthopaedic Hospital NHS
Trust, Brockley Hill, Stanmore, Middlesex
HA7 4LP, UK
| | - R. Pollock
- Royal National Orthopaedic Hospital NHS
Trust, Brockley Hill, Stanmore, Middlesex
HA7 4LP, UK
| | - J. A. Skinner
- Royal National Orthopaedic Hospital NHS
Trust, Brockley Hill, Stanmore, Middlesex
HA7 4LP, UK
| | - S. Warren
- Directorate of Infection, Royal Free London
NHS Foundation Trust and Royal National Orthopaedic Hospital NHS
Trust, Pond Street, London
NW3 2QG, Brockley Hill, Stanmore, Middlesex
HA7 4LP, UK
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17
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De La Hoz Polo M, Dick E, Bhumbra R, Pollock R, Sandhu R, Saifuddin A. Surgical considerations when reporting MRI studies of soft tissue sarcoma of the limbs. Skeletal Radiol 2017; 46:1667-1678. [PMID: 28884363 DOI: 10.1007/s00256-017-2745-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 07/28/2017] [Accepted: 08/01/2017] [Indexed: 02/02/2023]
Abstract
Soft tissue sarcomas (STS) are rare tumours that require prompt diagnosis and treatment at a specialist centre. Magnetic resonance imaging (MRI) has become the modality of choice for identification, characterisation, biopsy planning and staging of soft tissue masses. MRI enables both the operating surgeon and patient to be optimally prepared prior to surgery for the likelihood of margin-negative resection and to anticipate possible sacrifice of adjacent structures and consequent loss of function. The aim of this review is to aid the radiologist in performing and reporting MRI studies of soft tissue sarcomas, with particular reference to the requirements of the surgical oncologist.
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Affiliation(s)
- Marcela De La Hoz Polo
- Radiology Department, Kings College Hospital, Denmark Hill, London, Brixton, SE5 9RS, UK.
| | - Elizabeth Dick
- Radiology Department, St Mary's Hospital, Imperial College Healthcare NHS Trust, Praed Street, London, W2 1NY, UK
| | - Rej Bhumbra
- Trauma & Orthopaedic Department, Barts Health Orthopaedic Centre, Newham & The Royal London Hospitals, Whitechapel Rd, London, Whitechapel, E1 1BB, UK
| | - Rob Pollock
- Trauma & Orthopaedic Department, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, HA7 4LP, UK
| | - Ranbir Sandhu
- Radiology Department, Queen Elizabeth Hospital, University Hospitals Birmingham, Mindelsohn Way, Birmingham, B15 2TH, UK
| | - Asif Saifuddin
- Radiology Department, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, HA7 4LP, UK.
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18
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van Praag VM, Rueten-Budde AJ, Jeys LM, Laitinen MK, Pollock R, Aston W, van der Hage JA, Dijkstra PS, Ferguson PC, Griffin AM, Willeumier JJ, Wunder JS, van de Sande MA, Fiocco M. A prediction model for treatment decisions in high-grade extremity soft-tissue sarcomas: Personalised sarcoma care (PERSARC). Eur J Cancer 2017; 83:313-323. [DOI: 10.1016/j.ejca.2017.06.032] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2017] [Revised: 06/19/2017] [Accepted: 06/24/2017] [Indexed: 11/28/2022]
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Willeumier JJ, Rueten-Budde AJ, Jeys LM, Laitinen M, Pollock R, Aston W, Dijkstra PDS, Ferguson PC, Griffin AM, Wunder JS, Fiocco M, van de Sande MAJ. Individualised risk assessment for local recurrence and distant metastases in a retrospective transatlantic cohort of 687 patients with high-grade soft tissue sarcomas of the extremities: a multistate model. BMJ Open 2017; 7:e012930. [PMID: 28196946 PMCID: PMC5318556 DOI: 10.1136/bmjopen-2016-012930] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVES This study investigates the effect of surgical margins and radiotherapy, in the presence of individual baseline characteristics, on survival in a large population of high-grade soft tissue sarcoma of the extremities using a multistate model. DESIGN A retrospective multicentre cohort study. SETTING 4 tertiary referral centres for orthopaedic oncology. PARTICIPANTS 687 patients with primary, non-disseminated, high-grade sarcoma only, receiving surgical treatment with curative intent between 2000 and 2010 were included. MAIN OUTCOME MEASURES The risk to progress from 'alive without disease' (ANED) after surgery to 'local recurrence' (LR) or 'distant metastasis (DM)/death'. The effect of surgical margins and (neo)adjuvant radiotherapy on LR and overall survival was evaluated taking patients' and tumour characteristics into account. RESULTS The multistate model underlined that wide surgical margins and the use of neoadjuvant radiotherapy decreased the risk of LR but have little effect on survival. The main prognostic risk factors for transition ANED to LR are tumour size (HR 1.06; 95% CI 1.01 to 1.11 (size in cm)) and (neo)adjuvant radiotherapy. The HRs for patients treated with adjuvant or no radiotherapy compared with neoadjuvant radiotherapy are equal to 4.36 (95% CI 1.34 to 14.24) and 14.20 (95% CI 4.14 to 48.75), respectively. Surgical resection margins had a protective effect for the occurrence of LR with HRs equal to 0.61 (95% CI 0.33 to 1.12), and 0.16 (95% CI 0.07 to 0.41) for margins between 0 and 2 mm and wider than 2 mm, respectively. For transition ANED to distant metastases/Death, age (HR 1.64 (95% CI 0.95 to 2.85) and 1.90 (95% CI 1.09 to 3.29) for 25-50 years and >50 years, respectively) and tumour size (1.06 (95% CI 1.04 to 1.08)) were prognostic factors. CONCLUSIONS This paper underlined the alternating effect of surgical margins and the use of neoadjuvant radiotherapy on oncological outcomes between patients with different baseline characteristics. The multistate model incorporates this essential information of a specific patient's history, tumour characteristics and adjuvant treatment modalities and allows a more comprehensive prediction of future events.
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Affiliation(s)
- Julie J Willeumier
- Department of Orthopaedic Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | | | - Lee M Jeys
- Department of Orthopaedic Surgery, Royal Orthopaedic Hospital, Birmingham, UK
| | - Minna Laitinen
- Department of Orthopaedic Surgery, Royal Orthopaedic Hospital, Birmingham, UK
| | - Rob Pollock
- Department of Orthopaedic Surgery, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Will Aston
- Department of Orthopaedic Surgery, Royal National Orthopaedic Hospital, Stanmore, UK
| | - P D Sander Dijkstra
- Department of Orthopaedic Surgery, Leiden University Medical Center, Leiden, The Netherlands
| | - Peter C Ferguson
- Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Canada
- Department of Surgery, University of Toronto, Toronto, Canada
| | - Anthony M Griffin
- Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Canada
- Department of Surgery, University of Toronto, Toronto, Canada
| | - Jay S Wunder
- Musculoskeletal Oncology Unit, Mount Sinai Hospital, Toronto, Canada
- Department of Surgery, University of Toronto, Toronto, Canada
| | - Marta Fiocco
- Mathematical Institute, Leiden University, Leiden, The Netherlands
- Department of Medical Statistics and Bioinformatics, Leiden University Medical Center, Leiden, The Netherlands
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20
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Messiou C, Vanel D, Pollock R, Cooke M, Moskovic E, Savidge C, King L, Patel A, Jones RL. Dear John Hunter. BMJ 2016; 355:i6515. [PMID: 27974313 DOI: 10.1136/bmj.i6515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
| | - Daniel Vanel
- Istituto Ortopedico Rizzoli Bologna, Bologna, Italy
| | - Rob Pollock
- Royal National Orthopaedic Hospital, Stanmore, Middlesex, UK
| | - Martyn Cooke
- Hunterian Museum, Royal College of Surgeons, London, UK
| | - Eleanor Moskovic
- Sarcoma Unit, The Royal Marsden NHS Foundation Trust, London, UK
| | - Cate Savidge
- Sarcoma Unit, The Royal Marsden NHS Foundation Trust, London, UK
| | - Laurence King
- Sarcoma Unit, The Royal Marsden NHS Foundation Trust, London, UK
| | - Anisha Patel
- Sarcoma Unit, The Royal Marsden NHS Foundation Trust, London, UK
| | - Robin L Jones
- Sarcoma Unit, The Royal Marsden NHS Foundation Trust, London, UK
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Abstract
The aim of this study was to determine whether obesity affects pain, surgical and functional outcomes following lumbar spinal fusion for low back pain (LBP). A systematic literature review and meta-analysis was made of those studies that compared the outcome of lumbar spinal fusion for LBP in obese and non-obese patients. A total of 17 studies were included in the meta-analysis. There was no difference in the pain and functional outcomes. Lumbar spinal fusion in the obese patient resulted in a statistically significantly greater intra-operative blood loss (weighted mean difference: 54.04 ml; 95% confidence interval (CI) 15.08 to 93.00; n = 112; p = 0.007) more complications (odds ratio: 1.91; 95% CI 1.68 to 2.18; n = 43858; p < 0.001) and longer duration of surgery (25.75 mins; 95% CI 15.61 to 35.90; n = 258; p < 0.001). Obese patients have greater intra-operative blood loss, more complications and longer duration of surgery but pain and functional outcome are similar to non-obese patients. Based on these results, obesity is not a contraindication to lumbar spinal fusion. Cite this article: Bone Joint J 2015;97-B:1395–1404.
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Affiliation(s)
- K. K. Lingutla
- University Hospital Of North Tees and
Hartlepool, Stockton on Tees TS19 8PE, UK
| | - R. Pollock
- University Hospital Of North Tees and
Hartlepool, Stockton on Tees TS19 8PE, UK
| | - E. Benomran
- Teesside University, Middlesbrough
TS1 3BA, UK
| | - B. Purushothaman
- University Hospital Of North Tees and
Hartlepool, Stockton on Tees TS19 8PE, UK
| | - A. Kasis
- Wansbeck General Hospital, Ashington, NE63
9JJ, UK
| | - C. K. Bhatia
- University Hospital Of North Tees and
Hartlepool, Stockton on Tees TS19 8PE, UK
| | - M. Krishna
- University Hospital Of North Tees and
Hartlepool, Stockton on Tees TS19 8PE, UK
| | - T. Friesem
- University Hospital Of North Tees and
Hartlepool, Stockton on Tees TS19 8PE, UK
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22
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Raut C, Miceli R, Strauss D, Swallow C, Hohenberger P, Coevorden FV, Rutkowski P, Fiore M, Callegaro D, Casali P, Haas R, Hayes A, Honore C, Cannell A, Jakob J, Szacht M, Fairweather M, Pollock R, Bonvalot S, Gronchi A. 3404 External validation of a nomogram predicting disease-free (DFS) and overall survival (OS) in patients (pts) with primary retroperitoneal sarcoma (pRPS). Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31879-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Stammers J, Kahane S, Ranawat V, Miles J, Pollock R, Carrington RWJ, Briggs T, Skinner JA. Outcomes of infected revision knee arthroplasty managed by two-stage revision in a tertiary referral centre. Knee 2015; 22:56-62. [PMID: 25467934 DOI: 10.1016/j.knee.2014.10.005] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 10/14/2014] [Accepted: 10/28/2014] [Indexed: 02/06/2023]
Abstract
BACKGROUND A two-stage revision remains the gold standard to eradicate deep infection in total knee arthroplasty. Higher failure rates are associated with a number of factors including poly-microbial infections, multiresistant organisms and previous operations. The aims are to investigate [1] the overall success rate of a two-stage revision for infections in TKA, [2] the outcome of repeat two-stage revisions in recurrent infections and [3] the factors affecting the outcomes of such cases. METHODS We present the outcomes of a consecutive, retrospective case series of 51 periprosthetic joint infections managed with a two-stage revision knee arthroplasty over a three year period. RESULTS Forty-six (90%) of 51 were referred from other hospitals. Infection was successfully eradicated in 24 (65%) of 37 patients undergoing an initial two-stage procedure. Following a failed two-stage revision, a repeat two-stage revision was performed in 19 patients eradicating infection in 8 (42%). A third two-stage was performed in five of these patients eradicating infection in three with an average follow-up of 43 months. Multidrug resistance was present in 69%, and 47% of the patients were infected with multiple organisms. All unsuccessful outcomes involved at least one multidrug-resistant organism compared to 43% in the successful cohort (P=0.0002). Serological markers prior to a second-stage procedure were not significantly different between successful and unsuccessful outcome groups. CONCLUSION Single or multiple two-stage revisions can eradicate infection despite previous failed attempts. In this series, failure is associated with multidrug resistance, previous failed attempts to eradicate infection and a less favourable host response.
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Affiliation(s)
- John Stammers
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, London HA7 4LP, United Kingdom.
| | - Steven Kahane
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, London HA7 4LP, United Kingdom
| | - Vijai Ranawat
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, London HA7 4LP, United Kingdom
| | - Jonathan Miles
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, London HA7 4LP, United Kingdom
| | - Rob Pollock
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, London HA7 4LP, United Kingdom
| | - Richard W J Carrington
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, London HA7 4LP, United Kingdom
| | - Timothy Briggs
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, London HA7 4LP, United Kingdom
| | - John A Skinner
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, London HA7 4LP, United Kingdom
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24
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Kuntz K, Keilhack H, Pollock R, Knutson S, Warholic N, Richon V, Chesworth R, Copeland R, Porter-Scott M, Sneeringer C, Wigle T. 277 The discovery and pre-clinical development of the first clinical stage EZH2-inhibitor, EPZ-6438 (E7438). Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70403-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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25
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Dhinsa BS, Gregory JJ, Nawabi DH, Nawabi D, Khan S, Pollock R, Aston WJ, Skinner JA, Briggs TWR. The outcome of resection of the distal ulna for tumour without soft-tissue or prosthetic reconstruction. Bone Joint J 2014; 96-B:1392-5. [PMID: 25274927 DOI: 10.1302/0301-620x.96b10.33664] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
In patients with a tumour affecting the distal ulna it is difficult to preserve the function of the wrist following extensive local resection. We report the outcome of 12 patients (nine female, three male) who underwent excision of the distal ulna without local soft-tissue reconstruction. In six patients, an aggressive benign tumour was present and six had a malignant tumour. At a mean follow-up of 64 months (15 to 132) the mean Musculoskeletal Tumour score was 64% (40% to 93%) and the mean DASH score was 35 (10 to 80). The radiological appearances were satisfactory in most patients. Local recurrence occurred in one patient with benign disease and two with malignant disease. The functional outcome was thus satisfactory at a mean follow-up in excess of five years, with a relatively low rate of complications. The authors conclude that complex reconstructive soft-tissue procedures may not be needed in these patients.
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Affiliation(s)
- B S Dhinsa
- Guy's and St Thomas' NHS Foundation Trust, Westminster Bridge Road, London, SE1 7EH, UK
| | - J J Gregory
- Manchester Royal Infirmary, Oxford Road, Manchester M13 9WL, UK
| | | | - D Nawabi
- Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - S Khan
- Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - R Pollock
- Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - W J Aston
- Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - J A Skinner
- Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - T W R Briggs
- Royal National Orthopaedic Hospital NHS Trust, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
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26
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Abstract
Significantly reduced distance between the ischium and the femur can result in symptomatic hip pain as a result of impingement. We present the case of a 16-year-old boy who presented with groin pain which had been affecting him for a year and a half following an innocuous football injury. Plain radiograph revealed a chronic apophyseal avulsion fracture of the ischium with excessive callus formation. CT scan and MRI revealed that the bony protuberance was responsible for symptomatic ischiofemoral impingement. In this case, he was successfully treated with non-operative management involving slow re-introduction to exercise. An unusual example of acquired ischiofemoral impingement, unrelated to surgery or significant trauma, this case highlights the need to consider such a diagnosis in otherwise unexplained groin pain.
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Affiliation(s)
| | - Sujith Konan
- Royal National Orthopaedic Hospital, Stanmore, Middlesex, UK
| | - Rob Pollock
- Royal National Orthopaedic Hospital, Stanmore, Middlesex, UK
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27
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O'Rielly D, Pollock R, Zhang Y, Al-Ghanim N, Yazdani R, Hamilton S, Bricknell R, Chandran V, Ardern R, Gladman D, Zhai G, Rahman P. AB0160 Epigenetic Studies in Maternally versus Paternally Transmitted Psoriatic Disease. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3309] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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28
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Affiliation(s)
- Rej Bhumbra
- London Sarcoma Service, Royal National Orthopaedic Hospital, Stanmore, Middlesex, UK.
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29
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Jalgaonkar A, Dawson-Bowling SJ, Mohan AT, Spiegelberg B, Saifuddin A, Pollock R, Skinner JA, Briggs TWR, Aston W. Identification of the biopsy track in musculoskeletal tumour surgery: a novel technique using India ink. Bone Joint J 2013; 95-B:250-3. [PMID: 23365037 DOI: 10.1302/0301-620x.95b2.30123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Local recurrence along the biopsy track is a known complication of percutaneous needle biopsy of malignant musculoskeletal tumours. In order to completely excise the track with the tumour its identification is essential, but this becomes increasingly difficult over time. In an initial prospective study, 22 of 45 patients (48.8%) identified over a three-month period, treated by resection of a musculoskeletal tumour, had an unidentifiable biopsy site at operation, with identification statistically more difficult after 50 days. We therefore introduced the practice of marking the biopsy site with India ink. In all 55 patients undergoing this procedure, the biopsy track was identified pre-operatively (100%); this difference was statistically significant. We recommend this technique as a safe, easy and accurate means of ensuring adequate excision of the biopsy track.
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Affiliation(s)
- A Jalgaonkar
- Royal National Orthopaedic Hospital, Stanmore, UK
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30
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Erturan G, Holme H, Cassoni A, Tirabosco R, Pollock R, Briggs T, Michelagnoli M. The importance of patient reported functional outcome in paediatric desmoid fibromatosis. Rare Tumors 2012. [DOI: 10.4081/rt.2012.4418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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31
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Erturan G, Holme H, Cassoni A, Tirabosco R, Pollock R, Briggs T, Michelagnoli M. The Importance of Patient Reported Functional Outcome in Paediatric Desmoid Fibromatosis. Rare Tumors 2012; 4:e38. [PMID: 23087794 PMCID: PMC3475945 DOI: 10.4081/rt.2012.e38] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 07/25/2012] [Indexed: 11/23/2022] Open
Affiliation(s)
- Gurhan Erturan
- Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Nuffield Orthopaedic Hospital, Oxford
| | - Harriet Holme
- The London Sarcoma Service, University College London Hospital, London
| | - Anna Cassoni
- The London Sarcoma Service, University College London Hospital, London
| | - Roberto Tirabosco
- Department of Pathology, Royal National Orthopaedic Hospital, Stanmore
| | - Rob Pollock
- The London Sarcoma Service, Royal National Orthopaedic Hospital, Stanmore, UK
| | - Tim Briggs
- The London Sarcoma Service, Royal National Orthopaedic Hospital, Stanmore, UK
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32
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Abstract
Bone metastasis is a common problem affecting a significant proportion of patients with metastatic cancer. Bone metastasis can present in a number of ways and the patients may need surgical stabilisation of their lesions. There are many important considerations in the care of these patients that need to be borne in mind including their increased anesthetic risks and potential risk of complications. There are continuous developments in the prevention, diagnosis and treatment with advances in imaging, orthopaedic technique and medication, particularly radiopharmaceuticals and cytotoxic, endocrine treatments with newer treatments based around the tumour cell-osteoclast interaction. Having a better understanding of these considerations and developments is important in allowing the optimisation of the care of the patient with bone metastasis.
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33
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Al-Hadithy N, Gikas P, Perera J, Aston W, Pollock R, Skinner J, Lotzof K, Cannon S, Briggs TW. Pre-operative Embolization of Primary and Secondary Bone Tumours is Safe and Effective: a Retrospective Study. World J Oncol 2011; 2:319-322. [PMID: 29147270 PMCID: PMC5649719 DOI: 10.4021/wjon389w] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/06/2011] [Indexed: 12/20/2022] Open
Abstract
Background The surgical treatment of bone tumours can result in large peri-operative blood loss, due to their large sizes and hypervascularity. Pre-operative embolisation has been successfully used to downgrade vascularity, thus reducing peri-operative blood loss and its associated complications. Methods Pre-operative embolisation was successfully undertaken on twenty-six patients with a variety of primary and secondary bone tumours. Results Mean blood loss was 796 mL and we experienced no complications. Conclusion Pre-operative arterial embolisation of large, richly vascular bone tumours in anatomically difficult positions, is a safe and effective method of downstaging vascularity and reducing blood loss.
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Affiliation(s)
- Nawfal Al-Hadithy
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
| | - Panagiotis Gikas
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
| | - Jonathan Perera
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
| | - Will Aston
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
| | - Rob Pollock
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
| | - John Skinner
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
| | - Kevin Lotzof
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
| | - Steve Cannon
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
| | - Tim W Briggs
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, UK
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34
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Sabharwal S, Datta G, Berber O, Aston W, Pollock R, Briggs T. Malignant proximal fibular tumours: a case series of 17 patients. Acta Orthop Belg 2011; 77:795-801. [PMID: 22308626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The aim of this study was to establish whether the proximity of significant neurovascular structures around the surgical excision results in higher rates of recurrence and poorer survival outcomes. A retrospective study of all patients treated at a regional bone tumour unit for proximal fibula Ewing's tumours and osteosarcomas was conducted, and in total 17 patients were identified. The recurrence rate of all cases was 29.4% and the overall 5 year survival was 70.5%. The recurrence rate just for osteosarcoma was 50%, which compared poorly to published recurrence rates throughout the appendicular skeleton. The 5-year survival for proximal fibula osteosarcoma of 50% was also worse than generalised survivorship data reported in non-metastatic osteosarcoma. This series demonstrates that malignant proximal fibula tumours are a difficult entity to manage and recurrence rates and patient survival are poor for osteosarcoma.
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35
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Lakkol S, Bhatia C, Taranu R, Pollock R, Hadgaonkar S, Krishna M. Efficacy of less invasive posterior lumbar interbody fusion as revision surgery for patients with recurrent symptoms after discectomy. ACTA ACUST UNITED AC 2011; 93:1518-23. [PMID: 22058305 DOI: 10.1302/0301-620x.93b11.27187] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Recurrence of back or leg pain after discectomy is a well-recognised problem with an incidence of up to 28%. Once conservative measures have failed, several surgical options are available and have been tried with varying degrees of success. In this study, 42 patients with recurrent symptoms after discectomy underwent less invasive posterior lumbar interbody fusion (LI-PLIF). Clinical outcome was measured using the Oswestry Disability Index (ODI), Short Form 36 (SF-36) questionnaires and visual analogue scales for back (VAS-BP) and leg pain (VAS-LP). There was a statistically significant improvement in all outcome measures (p < 0.001). The debate around which procedure is the most effective for these patients remains controversial. Our results show that LI-PLIF is as effective as any other surgical procedure. However, given that it is less invasive, we feel that it should be considered as the preferred option.
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Affiliation(s)
- S Lakkol
- University Hospital of North Tees, Hardwick Road, Stockton on Tees TS19 8PE, UK.
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36
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Dhinsa BS, Jalgaonkar A, Mann B, Butt S, Pollock R. Avulsion fracture of the anterior superior iliac spine: misdiagnosis of a bone tumour. J Orthop Traumatol 2011; 12:173-6. [PMID: 21837510 PMCID: PMC3163773 DOI: 10.1007/s10195-011-0153-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Accepted: 07/10/2011] [Indexed: 11/28/2022] Open
Abstract
Avulsion fractures of the anterior superior iliac spine are rare. This injury is usually seen in adolescents, as an avulsion fracture of the apophyses, a result of sudden vigorous contraction or repetitive contraction of the sartorius and tensor fasciae latae muscles. Treatment for this injury is usually conservative; however, surgical management has been reported in those with significant displacement. We present a 14 year old male patient who was referred to our unit for biopsy of a possible pathological fracture of his right ilium. The authors feel it is essential to understand the importance of ruling out a bone tumour, if the possibility has been raised, before managing a suspected fracture. If there is any doubt, the case should be referred to an appropriate sarcoma unit for review prior to any intervention.
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Affiliation(s)
- B S Dhinsa
- Royal National Orthopaedic Hospital, Stanmore, Middlesex HA7 4LP, UK.
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37
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Eder L, Chandran V, Pellett F, Pollock R, Shanmugarajah S, Rosen CF, Rahman P, Gladman DD. IL13 gene polymorphism is a marker for psoriatic arthritis among psoriasis patients. Ann Rheum Dis 2011; 70:1594-8. [DOI: 10.1136/ard.2010.147421] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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38
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Griffiths D, Gikas PD, Jowett C, Bayliss L, Aston W, Skinner J, Cannon S, Blunn G, Briggs TWR, Pollock R. Proximal humeral replacement using a fixed-fulcrum endoprosthesis. ACTA ACUST UNITED AC 2011; 93:399-403. [PMID: 21357964 DOI: 10.1302/0301-620x.93b3.24421] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Between 1997 and 2007, 68 consecutive patients underwent replacement of the proximal humerus for tumour using a fixed-fulcrum massive endoprosthesis. Their mean age was 46 years (7 to 87). Ten patients were lost to follow-up and 16 patients died. The 42 surviving patients were assessed using the Musculoskeletal Tumor Society (MSTS) Score and the Toronto Extremity Salvage Score (TESS) at a mean follow-up of five years and 11 months (one year to ten years and nine months). The mean MSTS score was 72.3% (53.3% to 100%) and the mean TESS was 77.2% (58.6% to 100%). Four of 42 patients received a new constrained humeral liner to reduce the risk of dislocation. This subgroup had a mean MSTS score of 77.7% and a mean TESS of 80.0%. The dislocation rate for the original prosthesis was 25.9; none of the patients with the new liner had a dislocation at a mean of 14.5 months (12 to 18). Endoprosthetic replacement for tumours of the proximal humerus using this prosthesis is a reliable operation yielding good results without the documented problems of unconstrained prostheses. The performance of this prosthesis is expected to improve further with a new constrained humeral liner, which reduces the risk of dislocation.
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Affiliation(s)
- D Griffiths
- Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK.
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39
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Pollock R, Chandran V, Barrett J, Eder L, Pellett F, Yao C, Lino M, Shanmugarajah S, Farewell VT, Gladman DD. Differential major histocompatibility complex class I chain-related A allele associations with skin and joint manifestations of psoriatic disease. ACTA ACUST UNITED AC 2011; 77:554-61. [DOI: 10.1111/j.1399-0039.2011.01670.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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40
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McNally RJQ, Court S, James PW, Pollock R, Blakey K, Begon M, Cheetham TD. P06 The epidemiology of type 1 diabetes in children from Northeast England. Br J Soc Med 2010. [DOI: 10.1136/jech.2010.120477.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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41
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Kalson NS, Gikas PD, Aston W, Miles J, Blunn G, Pollock R, Skinner J, Briggs TWR, Cannon SR. Custom-made endoprostheses for the femoral amputation stump: an alternative to hip disarticulation in tumour surgery. J Bone Joint Surg Br 2010; 92:1134-7. [PMID: 20675760 DOI: 10.1302/0301-620x.92b8.23682] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Disarticulation of the hip in patients with high-grade tumours in the upper thigh results in significant morbidity. In patients with no disease of the proximal soft tissue a femoral stump may be preserved, leaving a fulcrum for movement and weight-bearing. We reviewed nine patients in whom the oncological decision would normally be to disarticulate, but who were treated by implantation of an endoprosthesis in order to create a functioning femoral stump. The surgery was undertaken for chondrosarcoma in four patients, pleomorphic sarcoma in three, osteosarcoma in one and fibrous dysplasia in one. At follow-up at a mean of 80 months (34 to 132), seven patients were alive and free from disease, one had died from lung metastases and another from a myocardial infarction. The mean functional outcome assessment was 50 (musculoskeletal tumor society), 50 and 60 (physical and mental Short-form 36 scores). Implantation of an endoprosthesis into the stump in carefully selected patients allows fitting of an above-knee prosthesis and improves wellbeing and the functional outcome.
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Affiliation(s)
- N S Kalson
- Medical School, The Stopford Building, Manchester University, Oxford Road, Manchester, M13 9PT, UK.
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42
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Vijayan S, Bentley G, Briggs TWR, Skinner JA, Carrington RWJ, Pollock R, Flanagan AM. Cartilage repair: A review of Stanmore experience in the treatment of osteochondral defects in the knee with various surgical techniques. Indian J Orthop 2010; 44:238-45. [PMID: 20697474 PMCID: PMC2911921 DOI: 10.4103/0019-5413.65136] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Articular cartilage damage in the young adult knee, if left untreated, it may proceed to degenerative osteoarthritis and is a serious cause of disability and loss of function. Surgical cartilage repair of an osteochondral defect can give the patient significant relief from symptoms and preserve the functional life of the joint. Several techniques including bone marrow stimulation, cartilage tissue based therapy, cartilage cell seeded therapies and osteotomies have been described in the literature with varying results. Established techniques rely mainly on the formation of fibro-cartilage, which has been shown to degenerate over time due to shear forces. The implantation of autologous cultured chondrocytes into an osteochondral defect, may replace damaged cartilage with hyaline or hyaline-like cartilage. This clinical review assesses current surgical techniques and makes recommendations on the most appropriate method of cartilage repair when managing symptomatic osteochondral defects of the knee. We also discuss the experience with the technique of autologous chondrocyte implantation at our institution over the past 11 years.
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Affiliation(s)
- S Vijayan
- Joint Reconstruction and Cartilage Transplantation Unit, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, United Kingdom
| | - G Bentley
- Joint Reconstruction and Cartilage Transplantation Unit, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, United Kingdom
| | - TWR Briggs
- Joint Reconstruction and Cartilage Transplantation Unit, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, United Kingdom
| | - JA Skinner
- Joint Reconstruction and Cartilage Transplantation Unit, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, United Kingdom
| | - RWJ Carrington
- Joint Reconstruction and Cartilage Transplantation Unit, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, United Kingdom
| | - R Pollock
- Joint Reconstruction and Cartilage Transplantation Unit, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, United Kingdom
| | - AM Flanagan
- Joint Reconstruction and Cartilage Transplantation Unit, Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex, HA7 4LP, United Kingdom
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Spiegelberg BGI, Sewell MD, Aston WJS, Blunn GW, Pollock R, Cannon SR, Briggs TWR. The early results of joint-sparing proximal tibial replacement for primary bone tumours, using extracortical plate fixation. ACTA ACUST UNITED AC 2009; 91:1373-7. [DOI: 10.1302/0301-620x.91b10.22076] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
This paper describes the preliminary results of a proximal tibial endoprosthesis which spares the knee joint and enables retention of the natural articulation by replacing part of the tibial metaphysis and diaphysis. In eight patients who had a primary malignant bone tumour of the proximal tibia, the distal stem, which had a hydroxyapatite-coated collar to improve fixation, was cemented into the medullary canal. The proximal end had hydroxyapatite-coated extracortical plates which were secured to the remaining proximal tibial metaphysis using cortical screws. The mean age of the patients at operation was 28.9 years (8 to 43) and the mean follow-up was for 35 months (4 to 48). The mean Musculoskeletal Tumour Society score was 79% (57% to 90%), the mean Oxford Knee score was 40 points of 48 (36 to 46) and the mean knee flexion was 112° (100° to 120°). In one patient, revision to a below-knee amputation through the prosthesis was required because of recurrence of the tumour. Another patient sustained a periprosthetic fracture which healed with a painful malunion. This was revised to a further endoprosthesis which replaced the knee. In the remaining six patients the prosthesis allowed preservation of the knee joint with good function and no early evidence of loosening. Further follow-up is required to assess the longevity of these prostheses.
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Affiliation(s)
- B. G. I. Spiegelberg
- The Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - M. D. Sewell
- The Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - W. J. S. Aston
- The Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - G. W. Blunn
- The Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - R. Pollock
- The Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - S. R. Cannon
- The Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
| | - T. W. R. Briggs
- The Royal National Orthopaedic Hospital, Brockley Hill, Stanmore, Middlesex HA7 4LP, UK
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Datir A, Lidder S, Pollock R, Tirabosco R, Saifuddin A. High-grade chondrosarcoma mimicking Brodie's abscess. Clin Radiol 2009; 64:944-7. [PMID: 19664486 DOI: 10.1016/j.crad.2009.04.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2008] [Revised: 03/17/2009] [Accepted: 04/01/2009] [Indexed: 12/01/2022]
Affiliation(s)
- A Datir
- Department of Radiology, Frenchay Hospital, North Bristol NHS Trust, Bristol, UK.
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45
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Greco OT, Jacob JLB, Parro A, Ruiz MA, Lago MR, Santos AB, Takeda RT, Abreu AC, Berruezo A, Vatasescu RG, Mont L, Tamborero D, Sitges M, Andreu D, Silva E, Brugada J, Castellant P, Orhan E, Fatemi M, Etienne Y, Valls-Bertault V, Blanc JJ, Vatasescu RG, Berruezo A, Iorgulaescu C, Vasile A, Constantinescu D, Stanciu A, Dumitrescu N, Dorobantu M, Khan FZ, Read PA, Virdee MS, Fynn SP, Dutka DP, Meiltz A, Sunthorn H, Burri H, Schaerer N, Shah D, Mihalcz A, Kassai I, Foldesi CS, Kardos A, Szili-Torok T, Van Bommel RJ, Delgado V, Borleffs CJW, Schalij MJ, Gorcsan J, Bax JJ, Sideris S, Skiadas I, Gatzoulis K, Vlasseros I, Trantalis G, Kalovidouris N, Stefanadis C, Kallikazaros I, Khan FZ, Read PA, Virdee MS, Fynn SP, Dutka DP, Laish-Farkash A, Nof E, Luria D, Yonat H, Fridman M, Eldar M, Antzelevitch C, Glikson M, Van Meerwijk WPM, Umar S, Van Der Laarse A, Pijnappels DA, Schalij MJ, Ypey DL, Partemi S, Berne P, Berruezo A, Batlle M, Mont L, Oliva A, Brugada R, Brugada J, Saravanan P, Pollock R, O'neill S, Davidson N, Dobrzynski H, Lacunza Ruiz FJ, Gimeno-Blanes JR, Garcia-Alberola A, Oliva-Sandoval MJ, Garcia-Molina E, Madrid E, Sabater-Molina M, Valdes M, De Roest G, Russel IK, Gotte MJW, Allaart CP, De Cock CC, Van Rossum AC, Mcgrew FA, Johnson EJ, Coppess MA, Hamilton B, Charlton TA, Charlton S, Sims JJ, Perrotta L, Ricciardi G, Pieragnoli P, Sofi F, Gori AM, Abbate R, Padeletti L, Michelucci A, Buck S, Maass AH, Schoonderwoerd BA, Van Veldhuisen DJ, Van Gelder IC, Ando K, Soga Y, Arita T, Goya M, Doi T, Shizuta S, Kimura T, Nobuyoshi M. Poster Session 4: CRT II. Europace 2009. [DOI: 10.1093/europace/euq241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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46
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Jaiswal PK, Blunn G, Pollock R, Skinner JA, Cannon SR, Briggs TWR. Bone remodeling around the tibial component of distal femoral expandable endoprosthesis. J Arthroplasty 2009; 24:421-6. [PMID: 18555650 DOI: 10.1016/j.arth.2008.02.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2007] [Revised: 11/15/2007] [Accepted: 02/12/2008] [Indexed: 02/01/2023] Open
Abstract
Radiographs of 33 patients who had an expandable prosthesis inserted after tumor resection in the distal femur were evaluated. We hypothesized that, when a sleeve was present, there was greater stem migration and cortical reaction. The thickness of medial and lateral cortices of the tibia was measured at 6 months and on the last follow-up radiograph. The distance from the edge of the prosthesis to the cortical edge was also compared. When a sleeve was present, there was greater stem migration (P < .001) and a greater increase in lateral cortical thickness (P < .001). There was a higher revision rate when a sleeve was used, but this was not statistically significant. There was no difference in function according to the Toronto Extremity Salvage Score (TESS) between the 2 groups. This is the first study to demonstrate that the presence of a polyethylene sleeve is associated with a tendency for the tibial prosthesis to migrate laterally and cause a greater sclerotic reaction.
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Affiliation(s)
- Parag K Jaiswal
- Bone Tumor Unit, The Royal National Orthopedic Hospital, Brockley Hill, Stanmore, Middlesex, UK
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47
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McAuliffe J, Hunt K, Lazar A, Yang D, Qiao W, Thall P, Benjamin R, Choi H, Pollock R, Trent J. QS33. A Randomized, Phase II Study of Preoperative Plus Postoperative Imatinib in GIST: Evidence of Rapid Radiographic and Temporal Induction of Tumor Cell Apoptosis. J Surg Res 2009. [DOI: 10.1016/j.jss.2008.11.325] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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48
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Sutherland AG, Barrow A, Mulhall K, Meek RMD, Pollock R, Poon P, Williams R. What is the point of the American-British-Canadian (ABC) fellowship? J Bone Joint Surg Br 2009; 91:138-140. [PMID: 19092019 DOI: 10.1302/0301-620x.91b1.21820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Affiliation(s)
- A G Sutherland
- University of Aberdeen, Polwarth Building, Foresterhill, Aberdeen, UK
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49
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Spencer P, Pollock R, Dubé M. Effects of un-ionized ammonia on histological, endocrine, and whole organism endpoints in slimy sculpin (Cottus cognatus). Aquat Toxicol 2008; 90:300-309. [PMID: 18992947 DOI: 10.1016/j.aquatox.2008.08.017] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/10/2008] [Revised: 08/18/2008] [Accepted: 08/26/2008] [Indexed: 05/27/2023]
Abstract
Ammonia is known to be an important toxicant in aquatic environments. Although ammonia toxicity has been well studied in many fish species, effects of chronic exposure on slimy sculpin (Cottus cognatus), a critical biomonitoring species for northern aquatic habitats, are not well known. Further, with increasing mining development in Canada's north, this information is critical to better predict potential effects of mine effluent discharges on northern fish species. Slimy sculpin were exposed to six concentrations of un-ionized ammonia (NH(3)) relevant to concentrations found in northern mining effluents: control (0 ppm), 0.278 ppm, 0.556 ppm, 0.834 ppm, 1.112 ppm, and 1.668 ppm. An LC(50) of 1.529 ppm was calculated from mortality data. Histopathological examination of gills indicated significant tissue damage, measured as lamellar fusion and epithelial lifting, at 0.834 ppm, 1.112 ppm, and 1.668 ppm. Using gill endpoints, NOEC and LOEC were calculated as 0.556 ppm and 0.834 ppm, respectively. An EC(50) of 0.775 ppm was determined for lamellar fusion and an EC(50) of 0.842 ppm for epithelial lifting. Hemorrhage of gills was present in mortalities, which occurred at 1.668 ppm of un-ionized ammonia. A significant decrease in liver somatic index (LSI) was seen in both male and female fish at 0.834 ppm and 1.112 ppm, respectively. Gonadosomatic index (GSI) in female fish significantly increased at 1.668 ppm un-ionized ammonia with an associated significant increase in total wholebody testosterone concentrations. GSI in male fish also significantly increased at 1.668 ppm but no differences were seen in testosterone concentrations. No significant differences were seen in gonad histopathological assessments or condition factor. Gill histopathology endpoints may be a more sensitive indicator for detecting effects in slimy sculpin exposed to ammonia than traditional chronic endpoints. Results from this study indicate that ammonia concentrations commonly reported in northern mine effluents hold potential to affect the health of slimy sculpin including acute, chronic, histological and endocrine endpoints.
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Affiliation(s)
- P Spencer
- Toxicology Centre, University of Saskatchewan, 44 Campus Drive, Saskatoon, SK, S7N 5B3 Canada.
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50
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Pollock R, Heneghan P, Riches PE. Under-arm partial body weight unloading causes spinal elongation and vibration attenuation during treadmill walking. Gait Posture 2008; 28:271-7. [PMID: 18304815 DOI: 10.1016/j.gaitpost.2007.12.074] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2007] [Revised: 11/01/2007] [Accepted: 12/30/2007] [Indexed: 02/02/2023]
Abstract
Whilst exercise is beneficial to those suffering from low back pain (LBP), spinal shrinkage and vibration during walking may aggravate the condition. This study investigates the effects of spinal unloading, by means of body-weight unloading (BWU), on spinal length and vibration response. Under-arm partial BWU (40% of bodyweight) was performed on 8 healthy males whilst walking on a treadmill for 1h, and compared to a control condition in the same participants. Motion analysis was used to track four reflective markers attached to the spine between C7 and the lumbar concavity at 100Hz, in 7s samples at regular intervals during the walk. A quintic polynomial was fitted to the coordinates in the sagittal plane, and sub-sectioned into three regions: the upper thoracic (UT), lower thoracic (LT) and upper lumbar (UL). The lengths of the curves were analysed in the time and frequency domains. The length of the spine increased by 4+/-2% (18mm) during the unloading condition with all regions showing an increase in length. The UL and LT regions lost length in the control condition, thereby exhibiting a significant interaction between unloading and time on region length (both P<0.05). In addition, compared to the control condition, the frequencies of the length changes were attenuated between 3 and 6Hz with unloading. Therefore, under-arm BWU facilitates spinal elongation, attenuates the frequency response of the spine in its resonant frequency regime and thus has potential benefits to the LBP population.
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Affiliation(s)
- R Pollock
- Department of Bioengineering, University of Strathclyde, United Kingdom
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