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  1. Article ; Online: Liposomal Bupivacaine-A Boon for Opioid-Sparing Surgery?-Reply.

    Hamilton, Thomas W / Pandit, Hemant G

    JAMA surgery

    2022  Volume 157, Issue 10, Page(s) 968–969

    MeSH term(s) Analgesics, Opioid/therapeutic use ; Anesthetics, Local ; Bupivacaine/therapeutic use ; Humans ; Liposomes ; Pain, Postoperative/drug therapy ; Pain, Postoperative/prevention & control
    Chemical Substances Analgesics, Opioid ; Anesthetics, Local ; Liposomes ; Bupivacaine (Y8335394RO)
    Language English
    Publishing date 2022-07-20
    Publishing country United States
    Document type Journal Article ; Comment
    ZDB-ID 2701841-6
    ISSN 2168-6262 ; 2168-6254
    ISSN (online) 2168-6262
    ISSN 2168-6254
    DOI 10.1001/jamasurg.2022.2814
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Return to driving post upper or lower extremity orthopaedic surgical procedures: a scoping review of current published literature.

    Khaliq, Mehnoor / Giannoudis, Vasileios P / Palan, Jeya / Pandit, Hemant G / van Duren, Bernard H

    EFORT open reviews

    2023  Volume 8, Issue 12, Page(s) 936–947

    Abstract: Patients undergoing planned or unplanned orthopaedic procedures involving their upper or lower extremity can prevent them from safe and timely return to driving, where they commonly ask, 'Doctor, when can I drive?' Driving recommendations after such ... ...

    Abstract Patients undergoing planned or unplanned orthopaedic procedures involving their upper or lower extremity can prevent them from safe and timely return to driving, where they commonly ask, 'Doctor, when can I drive?' Driving recommendations after such procedures are varied. The current evidence available is based on a heterogenous data set with varying degrees of sample size and markedly differing study designs. This instructional review article provides a scoping overview of studies looking at return to driving after upper or lower extremity surgery in both trauma and elective settings and, where possible, to provide clinical recommendations for return to driving. Medline, EMBASE, SCOPUS, and Web of Science databases were searched according to a defined search protocol to elicit eligible studies. Articles were included if they reviewed adult drivers who underwent upper or lower extremity orthopaedic procedures, were written in English, and offered recommendations about driving. A total of 68 articles were included in the analysis, with 36 assessing the lower extremity and 37 reviewing the upper extremity. The evidence available from the studies reviewed was of poor methodological quality. There was a lack of adequately powered, high quality, randomised controlled trials (RCTs) with large sample sizes to assess safe return to driving for differing subset of injuries. Many articles provide generic guidelines on return to driving when patients feel safe to perform an emergency stop procedure with adequate steering wheel control. In future, RCTs should be performed to develop definitive return to driving protocols in patients undergoing upper and lower extremity procedures.
    Language English
    Publishing date 2023-12-01
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 2844421-8
    ISSN 2058-5241 ; 2058-5241 ; 2396-7544
    ISSN (online) 2058-5241
    ISSN 2058-5241 ; 2396-7544
    DOI 10.1530/EOR-23-0117
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Comparison of axial-rotational postoperative periprosthetic fracture of the femur in composite osteoporotic femur versus human cadaveric specimens: A validation study.

    Lamb, Jonathan N / Coltart, Oliver / Adekanmbi, Isaiah / Pandit, Hemant G / Stewart, Todd

    Proceedings of the Institution of Mechanical Engineers. Part H, Journal of engineering in medicine

    2022  Volume 236, Issue 7, Page(s) 973–978

    Abstract: Postoperative periprosthetic femoral fracture following hip replacement has been the subject of many varied experimental approaches. Cadaveric samples offer realistic fit and fracture patterns but are subject to large between-sample variation. Composite ... ...

    Abstract Postoperative periprosthetic femoral fracture following hip replacement has been the subject of many varied experimental approaches. Cadaveric samples offer realistic fit and fracture patterns but are subject to large between-sample variation. Composite femurs have not yet been validated for this purpose. We compared the results of composite femurs to cadaveric femurs using an established methodology. In vitro postoperative periprosthetic fracture results using axial-rotational loading were compared between 12 composite femurs and nine fresh frozen femurs, which were implanted with an otherwise identical collarless (6 composite vs 4 cadaveric) or collared (6 composite vs 5 cadaveric) cementless femoral stem using identical methodology. Fracture torque and rotational displacement were measured and torsional stiffness and rotational work prior to fracture were estimated. Fractures patterns were graded according to the Unified Classification System. Fracture torque, displacement, torsional stiffness and fracture patterns for cadaveric and composite femurs were similar between groups. There was a trend for a greater rotational displacement in the cadaveric groups, which lead to a decrease in torsional stiffness and a significantly greater rotational work prior to fracture for all cadaveric specimens (collarless stems: 10.51 [9.71 to 12.57] vs 5.21 [4.25 to 6.04],
    MeSH term(s) Biomechanical Phenomena ; Cadaver ; Femoral Fractures/surgery ; Femur/surgery ; Hip Prosthesis ; Humans ; Periprosthetic Fractures/surgery
    Language English
    Publishing date 2022-05-21
    Publishing country England
    Document type Journal Article
    ZDB-ID 1065942-0
    ISSN 2041-3033 ; 0046-2039 ; 0954-4119
    ISSN (online) 2041-3033
    ISSN 0046-2039 ; 0954-4119
    DOI 10.1177/09544119221092842
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Development of a patient-reported outcome measure (PROM) and change measure for use in early recovery following hip or knee replacement.

    Strickland, Louise H / Murray, David W / Pandit, Hemant G / Jenkinson, Crispin

    Journal of patient-reported outcomes

    2020  Volume 4, Issue 1, Page(s) 91

    Abstract: Background: Hip and knee replacement are effective procedures for end-stage arthritis that has not responded to medical management. However, until now, there have been no validated, patient-reported tools to measure early recovery in this growing ... ...

    Abstract Background: Hip and knee replacement are effective procedures for end-stage arthritis that has not responded to medical management. However, until now, there have been no validated, patient-reported tools to measure early recovery in this growing patient population. The process of development and psychometric evaluation of the Oxford Arthroplasty Early Recovery Score (OARS), a 14-item patient-reported outcome measure (PROM) measuring health status, and the Oxford Arthroplasty Early Change Score (OACS) a 14-item measure to assess change during the first 6 weeks following surgery is reported.
    Patients and methods: A five-phased, best practice, iterative approach was used. From a literature based starting point, qualitative interviews with orthopaedic healthcare professionals, were then performed ascertaining if and how clinicians would use such a PROM and change measure. Analysis of in-depth patient-interviews in phase one identified important patient-reported factors in early recovery which were used to provide questionnaire themes. In Phase two, candidate items from Phase One interviews were generated and pilot questionnaires developed and tested. Exploratory factor analysis with item reduction and final testing of the questionnaires was performed in phase three. Phase Four involved validation testing.
    Results: Qualitative interviews (n = 22) with orthopaedic healthcare professionals, helped determine views of potential users, and guide structure. In Phase One, factors from patient interviews (n = 30) were used to find questionnaire themes and generate items. Pilot questionnaires were developed and tested in Phase Two. Items were refined in the context of cognitive debrief interviews (n = 34) for potential inclusion in the final tools. Final testing of questionnaire properties with item reduction (n = 168) was carried out in phase three. Validation of the OARS and OACS was performed in phase four. Both measures were administered to consecutive patients (n = 155) in an independent cohort. Validity and reliability were assessed. Psychometric testing showed positive results, in terms of internal consistency and sensitivity to change, content validity and relevance to patients and clinicians. In addition, these measures have been found to be acceptable to patients throughout early recovery with validation across the 6 week period.
    Conclusions: These brief, easy-to-use tools could be of great use in assessing recovery pathways and interventions in arthroplasty surgery.
    Language English
    Publishing date 2020-11-07
    Publishing country Germany
    Document type Journal Article
    ISSN 2509-8020
    ISSN (online) 2509-8020
    DOI 10.1186/s41687-020-00262-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: The Cobalt-To-Chromium Ratio "May Be" a Key Marker for Adverse Local Tissue Reactions in Metal-On-Metal Hips.

    Matharu, Gulraj S / Pandit, Hemant G

    The Journal of arthroplasty

    2016  Volume 31, Issue 6, Page(s) 1374–1375

    MeSH term(s) Arthroplasty, Replacement, Hip ; Chromium ; Cobalt ; Hip/surgery ; Hip Prosthesis ; Humans ; Metal-on-Metal Joint Prostheses ; Prosthesis Design
    Chemical Substances Chromium (0R0008Q3JB) ; Cobalt (3G0H8C9362)
    Language English
    Publishing date 2016
    Publishing country United States
    Document type Letter ; Comment
    ZDB-ID 632770-9
    ISSN 1532-8406 ; 0883-5403
    ISSN (online) 1532-8406
    ISSN 0883-5403
    DOI 10.1016/j.arth.2015.09.047
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article: Comparison of Mechanical Performance between Circular Frames and Biplanar Distraction Devices for Knee Joint Distraction.

    Chowdhury, James My / Lineham, Beth / Pallett, Matthew / Pandit, Hemant G / Stewart, Todd D / Harwood, Paul J

    Strategies in trauma and limb reconstruction

    2021  Volume 16, Issue 2, Page(s) 71–77

    Abstract: Aim and objective: This study was designed to test and compare the mechanical performance of the biplanar ArthroSave KneeReviver and a circular frame construct with the intended use of providing a mechanically favourable environment for cartilage ... ...

    Abstract Aim and objective: This study was designed to test and compare the mechanical performance of the biplanar ArthroSave KneeReviver and a circular frame construct with the intended use of providing a mechanically favourable environment for cartilage regeneration across a knee joint.
    Materials and methods: Three similar constructs of the two devices were applied to biomechanical testing sawbones, with the knee distracted by 8 mm. The constructs were vertically loaded to 800 N in an Instron testing machine at 20 mm/minute. Tests were conducted in neutral hip flexion and at 12° of hip flexion and extension, to mimic leg position in gait. Displacement measurements were taken from the Instron machine, and three-dimensional joint motion was recorded using an Optotrak Certus motion capture system.
    Results: Overall axial rigidity was similar between the two devices (circular frame, 81.6 N/mm ± 5.9; and KneeReviver, 79.5 N/mm ± 25.1 with hip neutral) and similar in different hip positions. At the point of joint contact, the overall rigidity of the circular frame increased significantly more than the KneeReviver (491 N/mm ± 27 and 93 N/mm ± 32, respectively,
    Conclusion: The circular frame provides a similar mechanical environment to the novel KneeReviver device, for which most clinical data are available. These findings suggest that both devices appear a viable option for knee joint distraction (KJD). Further clinical data will help inform mode of application.
    Clinical significance: KJD is a relatively novel technique for use in osteoarthritis (OA), and it remains unclear which distraction devices provide appropriate mechanics. Our testing gives evidence to support either option for further use.
    How to cite this article: Chowdhury JMY, Lineham B, Pallett M,
    Language English
    Publishing date 2021-11-15
    Publishing country India
    Document type Journal Article
    ZDB-ID 2387508-2
    ISSN 1828-8928 ; 1828-8936
    ISSN (online) 1828-8928
    ISSN 1828-8936
    DOI 10.5005/jp-journals-10080-1530
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Early Recovery Following Total and Unicompartmental Knee Arthroplasty Assessed Using Novel Patient-Reported Measures.

    Strickland, Louise H / Rahman, Azmi / Jenkinson, Crispin / Pandit, Hemant G / Murray, David W

    The Journal of arthroplasty

    2021  Volume 36, Issue 10, Page(s) 3413–3420

    Abstract: Background: The early postoperative recovery period following unicompartmental (UKA) and total knee arthroplasty (TKA) is an important area for research with increasingly sensitive metrics and new technologies. This study uses 2 recently developed ... ...

    Abstract Background: The early postoperative recovery period following unicompartmental (UKA) and total knee arthroplasty (TKA) is an important area for research with increasingly sensitive metrics and new technologies. This study uses 2 recently developed patient-reported scores to compare the recovery following UKA and TKA.
    Methods: Two consecutive cohorts of 37 UKAs and 33 TKAs completed the Oxford Arthroplasty Early Recovery Score (OARS) and the Oxford Arthroplasty Early Change Score (OACS) on days 1, 2, 3, 7, 14, and week 6. The Short Form-36 version 2 was also completed on weeks 1, 2, and 6. Improvements within cohorts and comparisons between cohorts were assessed.
    Results: For both UKA and TKA the speed of recovery was rapid early on and then progressively decreased. At all time points, the UKA cohort reported similar or significantly better scores than the TKA cohort. The overall OARS (P < .001) showed that UKA recovered, shown as improvement on the OARS, 2-3 times faster than TKA. OARS subscales demonstrated that UKA had better Function/Mobility (P = .003) particularly early in the recovery, and better Nausea/Feeling Unwell (P < .001) and Fatigue/Sleep (P = .009) later in the recovery. UKA also had less pain at 2 weeks (P = .03). There was no significant difference between UKA and TKA OACS. UKA had significantly better scores in 3 of the 8 Short Form-36 domains, with the largest difference being in Role-Emotional (P = .003).
    Conclusion: The OARS is useful for the assessment of postoperative recovery. This study provides direct evidence that recovery following UKA is better and 2-3 times faster than following TKA. All differences may be explained by the less invasive nature of UKA.
    MeSH term(s) Arthroplasty, Replacement, Knee ; Cohort Studies ; Humans ; Knee Joint/surgery ; Osteoarthritis, Knee/surgery ; Patient Reported Outcome Measures ; Treatment Outcome
    Language English
    Publishing date 2021-05-24
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 632770-9
    ISSN 1532-8406 ; 0883-5403
    ISSN (online) 1532-8406
    ISSN 0883-5403
    DOI 10.1016/j.arth.2021.05.025
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Calcar-collar contact during simulated periprosthetic femoral fractures increases resistance to fracture and depends on the initial separation on implantation: A composite femur in vitro study.

    Lamb, Jonathan N / Coltart, Oliver / Adekanmbi, Isaiah / Pandit, Hemant G / Stewart, Todd

    Clinical biomechanics (Bristol, Avon)

    2021  Volume 87, Page(s) 105411

    Abstract: Background: A calcar collar may reduce risk of periprosthetic fracture of the femur, through collar contact. We estimated the effect of collar contact on periprosthetic fracture mechanics using a collared fully coated cementless femoral stem and then ... ...

    Abstract Background: A calcar collar may reduce risk of periprosthetic fracture of the femur, through collar contact. We estimated the effect of collar contact on periprosthetic fracture mechanics using a collared fully coated cementless femoral stem and then estimated the effect of initial calcar-collar separation on the likelihood of collar contact.
    Methods: Three groups of six composite left femurs with increasing calcar-collar separation in each group, underwent periprosthetic fracture simulation in a materials testing machine. Fracture torque and rotational displacement were measured and torsional stiffness and rotational work prior to fracture were estimated. Calcar collar contact prior to fracture was identified using high speed camera footage.
    Findings: Where calcar-collar contact occurred fracture torque was greater (47.33 [41.03 to 50.45] Nm versus 38.26 [33.70 to 43.60] Nm, p = 0.05), Rotational displacement was less (16.6 [15.5 to 22.3] degrees versus 21.2 [18.9 to 28.1] degrees, p = 0.07), torsional stiffness was greater (151.38 [123.04 to 160.42] rad.Nm
    Interpretation: Surgeons should reduce calcar-collar separation at stem implantation to a maximum of 1 mm to increase the chance of calcar-collar contact during injury and reduce the risk of early post-operative femoral fracture.
    MeSH term(s) Arthroplasty, Replacement, Hip/adverse effects ; Femoral Fractures/etiology ; Femoral Fractures/surgery ; Femur/diagnostic imaging ; Femur/surgery ; Hip Prosthesis ; Humans ; Periprosthetic Fractures/etiology ; Periprosthetic Fractures/surgery
    Language English
    Publishing date 2021-06-10
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 632747-3
    ISSN 1879-1271 ; 0268-0033
    ISSN (online) 1879-1271
    ISSN 0268-0033
    DOI 10.1016/j.clinbiomech.2021.105411
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  9. Article ; Online: Kinematically Aligned Total Knee Arthroplasty or Mechanically Aligned Total Knee Arthroplasty.

    Takahashi, Tsuneari / Ansari, Juned / Pandit, Hemant G

    The journal of knee surgery

    2018  Volume 31, Issue 10, Page(s) 999–1006

    Abstract: Kinematically aligned total knee arthroplasty (KATKA) was developed to more anatomically align the knee prosthesis to restore the native alignment of the knee and promote physiological kinematics. Even though there are concerns with implant survival, and ...

    Abstract Kinematically aligned total knee arthroplasty (KATKA) was developed to more anatomically align the knee prosthesis to restore the native alignment of the knee and promote physiological kinematics. Even though there are concerns with implant survival, and follow-up at 10 years or more after KATKA has not been reported, there is a negligible incidence of failure of a tibial component at 2 to 9 years. Early clinical results with this technique are encouraging and demonstrate better functional outcomes compared with mechanically aligned TKA (MATKA). The purpose of this study is to perform a systematic review and meta-analysis of the literature to determine whether there are any clinical differences between KATKA and MATKA. The authors conducted a systematic review of the English literature. Five randomized controlled trials (RCTs) which compared clinical outcomes of KATKA and MATKA were finally included. Four RCTs used patient-specific instrument, and one RCT used navigation. Data were extracted and meta-analysis was conducted. KATKA patients had better outcomes: Mean difference between KATKA and MATKA and
    MeSH term(s) Arthroplasty, Replacement, Knee/methods ; Biomechanical Phenomena ; Humans ; Knee Joint/surgery ; Knee Prosthesis ; Osteoarthritis, Knee/physiopathology ; Osteoarthritis, Knee/surgery ; Randomized Controlled Trials as Topic ; Range of Motion, Articular/physiology
    Language English
    Publishing date 2018-02-14
    Publishing country Germany
    Document type Comparative Study ; Journal Article ; Meta-Analysis ; Review
    ZDB-ID 2075354-8
    ISSN 1938-2480 ; 1538-8506 ; 0899-7403
    ISSN (online) 1938-2480
    ISSN 1538-8506 ; 0899-7403
    DOI 10.1055/s-0038-1632378
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  10. Article ; Online: The Oxford Medial Unicompartmental Knee Arthroplasty: The South African Experience.

    Campi, Stefano / Pandit, Hemant G / Oosthuizen, Christiaan R

    The Journal of arthroplasty

    2018  Volume 33, Issue 6, Page(s) 1727–1731

    Abstract: Background: The Oxford unicompartmental knee arthroplasty (OUKA) is a successful treatment for endstage, symptomatic anteromedial osteoarthritis. This study reports the results of a cohort of consecutive cemented and cementless medial OUKAs from an ... ...

    Abstract Background: The Oxford unicompartmental knee arthroplasty (OUKA) is a successful treatment for endstage, symptomatic anteromedial osteoarthritis. This study reports the results of a cohort of consecutive cemented and cementless medial OUKAs from an independent center and aims to answer the following questions: what is the survival of OUKA in the hands of a nondesigner surgeon? Are there any differences in the survival of cementless and cemented OUKA? Are the failure modes any different with the cementless and cemented OUKA?
    Methods: One thousand one hundred twenty consecutive OUKAs were implanted in a single center for the recommended indications. Patients were prospectively identified and followed up. Survival was calculated with revision as the end point.
    Results: There were 522 cemented and 598 cementless implants. The mean follow-up was 8.3 years for cemented implants (range 0.5-17, standard deviation [SD] 2.9) and 2.7 years (range 0.5-7, SD 1.8) for cementless implants. The Oxford knee score improved from a preoperative mean of 22 (SD 8.1) to 40 (SD 7.9) at the last follow-up (P < .001). There were 59 failures requiring revision surgery, with a 5.3% cumulative revision rate. The most common reason for failure was progression of osteoarthritis in the lateral compartment, occurred in 26 cases (2.3%). The cumulative 10-year survival was 91% (95% confidence interval 87.3-95.2).
    Conclusion: The results of this prospective, consecutive case series from the African continent demonstrated that excellent results are achievable with the OUKA in independent centers if the correct indications and surgical technique are used.
    MeSH term(s) Adult ; Aged ; Aged, 80 and over ; Arthroplasty, Replacement, Knee/methods ; Arthroplasty, Replacement, Knee/statistics & numerical data ; Bone Cements ; Disease Progression ; Female ; Follow-Up Studies ; Humans ; Knee Prosthesis/adverse effects ; Male ; Middle Aged ; Osteoarthritis, Knee/surgery ; Prospective Studies ; Prosthesis Failure/etiology ; Reoperation/statistics & numerical data ; South Africa ; Treatment Outcome
    Chemical Substances Bone Cements
    Language English
    Publishing date 2018-02-02
    Publishing country United States
    Document type Journal Article
    ZDB-ID 632770-9
    ISSN 1532-8406 ; 0883-5403
    ISSN (online) 1532-8406
    ISSN 0883-5403
    DOI 10.1016/j.arth.2018.01.035
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