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  1. Book ; Thesis: Retrospektive Evaluation der ersten Kurzzeitergebnisse nach Verwendung eines neuen Pfannenimplantates zur acetabulären Defektrekonstruktion

    Wacker, Miriam / Rößler, Philip P.

    2021  

    Institution Rheinische Friedrich-Wilhelms-Universität Bonn
    Author's details Miriam Wacker ; 1. Gutachter: PD Dr. med. Philip P. Rößler
    Language German
    Size 114 Seiten, Illustrationen, Diagramme
    Publishing place Bonn
    Publishing country Germany
    Document type Book ; Thesis
    Thesis / German Habilitation thesis Dissertation, Rheinische Friedrich-Wilhelms-Universität Bonn, 2021
    HBZ-ID HT020879026
    Database Catalogue ZB MED Medicine, Health

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  2. Article: Longitudinal Radiographic Bone Density Measurement in Revision Hip Arthroplasty and Its Correlation with Clinical Outcome.

    Roessler, Philip P / Eich, Jakob / Wirtz, Dieter C / Schildberg, Frank A

    Journal of clinical medicine

    2023  Volume 12, Issue 8

    Abstract: The subjective analysis of conventional radiography represents the principal method for bone diagnostics in endoprosthetics. Alternative objective quantitative methods are described but not commonly used. Therefore, semi-quantitative methods are tested ... ...

    Abstract The subjective analysis of conventional radiography represents the principal method for bone diagnostics in endoprosthetics. Alternative objective quantitative methods are described but not commonly used. Therefore, semi-quantitative methods are tested using digital computation and artificial intelligence to standardize, simplify, and ultimately improve the assessment. This study aimed to evaluate the correlation between relative density progressions and clinical outcomes. Radiographs and clinical examinations before and 24 and 48 weeks after surgery were obtained from sixty-eight patients with a modular hip stem. For the calculation of the relative bone density, the modal gray values of the Gruen zones were measured using ImageJ and were normalized by gray values of the highest and lowest ROI. The clinical outcomes were measured according to the Harris hip score before evaluating them for correlations. Analyses were performed separately for subgroups and bone regions. The Harris hip score increased from 44.15 ± 15.00 pre-operatively to 66.20 ± 13.87 at the latest follow-up. The relative bone density adjustment of Gruen zone 7 showed a significant correlation to its clinical outcome. Other bone adaptations could be realistically reproduced and differences by regional zones and patients' histories visualized. Next to the simplicity and that no additional examination is required, the method provides good semi-quantitative results and visualizes adaptations, which make it suitable for use.
    Language English
    Publishing date 2023-04-10
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662592-1
    ISSN 2077-0383
    ISSN 2077-0383
    DOI 10.3390/jcm12082795
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: The Role of Osteotomy in Chronic Valgus Instability and Hyperextension Valgus Thrust (Medial Closing Wedge Distal Femoral Varus Osteotomy and Lateral Opening Wedge High Tibial Osteotomy).

    Roessler, Philip P / Getgood, Alan

    Clinics in sports medicine

    2019  Volume 38, Issue 3, Page(s) 435–449

    Abstract: Chronic valgus instability with concomitant valgus malalignment is a challenging diagnosis that cannot be successfully treated with ligament surgery alone. Hyperextension valgus thrust may be a symptom of this configuration, expressing the need for ... ...

    Abstract Chronic valgus instability with concomitant valgus malalignment is a challenging diagnosis that cannot be successfully treated with ligament surgery alone. Hyperextension valgus thrust may be a symptom of this configuration, expressing the need for thorough diagnosis and treatment. The present article will help to understand pathoanatomy and mechanisms of chronic valgus instability in combination with malalignment and provide a description of treatment techniques, in particular medial closing wedge distal femoral varus osteotomy (MCWDFVO) and lateral opening wedge high tibial osteotomy (LOWHTO), and their indications to deal with both issues simultaneously.
    MeSH term(s) Bone Malalignment/surgery ; Humans ; Joint Instability/surgery ; Knee Joint/surgery ; Osteotomy/methods ; Physical Examination ; Preoperative Period ; Radiography ; Tibia/surgery
    Language English
    Publishing date 2019-03-26
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 779944-5
    ISSN 1556-228X ; 0278-5919
    ISSN (online) 1556-228X
    ISSN 0278-5919
    DOI 10.1016/j.csm.2019.02.012
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Females show worse functional outcome and quality of life compared to males 2 years after meniscus surgery: Data analysis from the German Arthroscopy Registry.

    Mai, Celine / Mai, Patrick / Hinz, Maximilian / Saenger, Rebecca / Seil, Romain / Tischer, Thomas / Roessler, Philip P

    Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA

    2024  

    Abstract: Purpose: The purpose of this study was to investigate the impact of sex on knee function, activity and quality of life following meniscus surgery using data from the German Arthroscopy Registry.: Methods: This is a retrospective cohort study with ... ...

    Abstract Purpose: The purpose of this study was to investigate the impact of sex on knee function, activity and quality of life following meniscus surgery using data from the German Arthroscopy Registry.
    Methods: This is a retrospective cohort study with data collected between 2017 and 2022. Patient-reported outcome measures (PROMs), namely Knee Injury and Osteoarthritis Outcome Score (KOOS), EuroQol Visual Analogue Scale (EQ Scale), and Marx Activity Rating Scale (MARS), were collected preoperatively and at 6, 12 and 24 months postoperatively. Data were analysed to examine differences between male and female patients regarding PROMs, pre-existing conditions, meniscus lesion types and surgical treatments.
    Results: A total of 1106 female (36.6%) and 1945 male patients (63.7%) were included. Males were significantly younger than females and had a higher body mass index. Overall, there were four times more medial meniscus lesions (MMLs) (77.5%) than lateral meniscus lesions (LMLs) (27.9%). Degenerative LMLs were more frequent in females, while traumatic LMLs were more common in males. Frequencies of traumatic and degenerative MMLs were similar among males and females. Males had higher absolute KOOS irrespective of treatment or meniscus lesion type. Meniscus repair resulted in similar improvements in ΔKOOS for both sexes, while meniscus resection exhibited higher absolute KOOS for males at each time point. Males generally had higher EQ Scale and MARS than females.
    Conclusion: Greater improvements in knee function, activity and quality of life were observed in males. While MMLs appear to be comparable among sexes, the nature of LML differed significantly. These results may help surgeons to refine patient selection for specific treatments to improve overall clinical outcomes.
    Level of evidence: Level III.
    Language English
    Publishing date 2024-03-07
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1159064-6
    ISSN 1433-7347 ; 0942-2056
    ISSN (online) 1433-7347
    ISSN 0942-2056
    DOI 10.1002/ksa.12131
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Suture Tape Reduces Quadriceps Tendon Repair Gap Formation Compared With High-Strength Suture: A Cadaveric Biomechanical Analysis.

    Roessler, Philip P / Burkhart, Timothy A / Getgood, Alan / Degen, Ryan M

    Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association

    2020  Volume 36, Issue 8, Page(s) 2260–2267

    Abstract: Purpose: To compare the biomechanical differences between quadriceps tendon (QT) repair with high-strength suture (HSS) versus suture tape (ST) with varying number of suture passes.: Methods: In total, 28 fresh-frozen QTs were randomized into 2 ... ...

    Abstract Purpose: To compare the biomechanical differences between quadriceps tendon (QT) repair with high-strength suture (HSS) versus suture tape (ST) with varying number of suture passes.
    Methods: In total, 28 fresh-frozen QTs were randomized into 2 groups: (1) HSS; or (2) ST; specimens were then further randomized into subgroups of either 4 or 6 suture passes. Specimens were secured within a materials testing system and a 150-N preload was applied for 10 seconds followed by a cyclic loading protocol between 50 N and 250 N for 1000 cycles. Video was used to follow tracking markers used to calculate the magnitude of tendon displacement. Two-way univariate analysis of variance was used to determine the effect of suture type and passes on the displacement after preloading and mixed repeated-measures analysis of variance was used to determine the effect of suture type and passes on displacement following cyclic loading.
    Results: There were large increases in displacement following the preload across all conditions (7.82 ± 3.64 mm), with no statistically significant differences between groups. There was a significant difference in the mean (± standard deviation) displacement between the ST (5.24 ± 2.82 mm) and HSS (7.93 ± 2.91 mm) starting at 200 cycles, which became more pronounced with successive testing out to 1000 cycles (P = .021). There were no significant difference with respect to the number of suture or tape passes.
    Conclusions: Following preloading at 150 N, significant displacement occurred in both QT repair groups. ST demonstrated significantly less displacement than HSS under cyclic loading and had greater ultimate failure loads.
    Clinical relevance: When performing QT repair, emphasis should be placed on appropriate pretensioning of sutures to at least 150 N before knot-tying. In addition, where available, ST should be used over HSS to reduce further cyclic elongation and improve ultimate failure loads.
    MeSH term(s) Biomechanical Phenomena ; Cadaver ; Humans ; Pressure ; Quadriceps Muscle/surgery ; Reconstructive Surgical Procedures ; Stress, Mechanical ; Surgical Tape ; Suture Anchors ; Suture Techniques ; Sutures ; Tendons/surgery ; Video Recording
    Language English
    Publishing date 2020-04-28
    Publishing country United States
    Document type Comparative Study ; Journal Article
    ZDB-ID 632528-2
    ISSN 1526-3231 ; 0749-8063
    ISSN (online) 1526-3231
    ISSN 0749-8063
    DOI 10.1016/j.arthro.2020.04.020
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Comment on Roessler et al.: Short-term follow up after implantation of a cell-free collagen type I matrix for the treatment of large cartilage defects of the knee.

    Roessler, Philip P / Efe, Turgay

    International orthopaedics

    2016  Volume 40, Issue 3, Page(s) 645–646

    MeSH term(s) Cartilage ; Cartilage Diseases ; Cartilage, Articular ; Chondrocytes ; Collagen Type I ; Follow-Up Studies ; Humans ; Knee Joint ; Transplantation, Autologous
    Chemical Substances Collagen Type I
    Language English
    Publishing date 2016-03
    Publishing country Germany
    Document type Comment ; Letter
    ZDB-ID 80384-4
    ISSN 1432-5195 ; 0341-2695
    ISSN (online) 1432-5195
    ISSN 0341-2695
    DOI 10.1007/s00264-015-3056-4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Klinische Basisuntersuchung des Kniegelenkes.

    Roessler, Philip P / Wirtz, Dieter C / Friedrich, Max J

    Zeitschrift fur Orthopadie und Unfallchirurgie

    2018  Volume 156, Issue 3, Page(s) 330–332

    Abstract: Objective: Successful treatment of knee joint disease requires an accurate diagnosis. In addition to a differentiated history, clinical examination is the most important component in the diagnosis of knee joint diseases.: Method: The present video ... ...

    Title translation Basic Clinical Examination of the Knee Joint.
    Abstract Objective: Successful treatment of knee joint disease requires an accurate diagnosis. In addition to a differentiated history, clinical examination is the most important component in the diagnosis of knee joint diseases.
    Method: The present video explains the common provocation and functional tests that are used in the basic clinical examination of the knee joint. In addition to general inspection and palpation, the focus here is on the individual region's patella, menisci, cruciate ligaments and collateral ligaments.
    Conclusion: The present methods of basic clinical examination allow a structured approach to clinical issues and can be a good basis for the diagnosis of knee joint diseases, if supplemented by further specific and individual tests.
    MeSH term(s) Anterior Cruciate Ligament ; Diagnostic Imaging ; Humans ; Joint Diseases/diagnosis ; Knee Injuries/diagnosis ; Knee Joint ; Ligaments, Articular ; Menisci, Tibial ; Palpation/methods ; Patella ; Physical Examination/methods
    Language German
    Publishing date 2018-03-12
    Publishing country Germany
    Document type Journal Article ; Video-Audio Media
    ZDB-ID 2280747-0
    ISSN 1864-6743 ; 1438-941X ; 1864-6697 ; 0044-3220
    ISSN (online) 1864-6743 ; 1438-941X
    ISSN 1864-6697 ; 0044-3220
    DOI 10.1055/s-0043-125093
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: The Medial structures of the knee have a significant contribution to posteromedial rotational laxity control in the PCL-deficient knee.

    Moslemian, Alireza / Arakgi, Michelle E / Roessler, Philip P / Sidhu, Rajeshwar Singh / Degen, Ryan M / Willing, Ryan / Getgood, Alan M J

    Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA

    2021  Volume 29, Issue 12, Page(s) 4172–4181

    Abstract: Purpose: Various reconstruction techniques have been employed to restore normal kinematics to PCL-deficient knees; however, studies show that failure rates are still high. Damage to secondary ligamentous stabilizers of the joint, which commonly occurs ... ...

    Abstract Purpose: Various reconstruction techniques have been employed to restore normal kinematics to PCL-deficient knees; however, studies show that failure rates are still high. Damage to secondary ligamentous stabilizers of the joint, which commonly occurs concurrently with PCL injuries, may contribute to these failures. The main objective of this study was to quantify the biomechanical contributions of the deep medial collateral ligament (dMCL) and posterior oblique ligament (POL) in stabilizing the PCL-deficient knee, using a joint motion simulator.
    Methods: Eight cadaveric knees underwent biomechanical analysis of posteromedial stability and rotatory laxity using an AMTI VIVO joint motion simulator. Combined posterior force (100 N) and internal torque (5 Nm) loads, followed by pure internal/external torques (± 5 Nm), were applied at 0, 30, 60 and 90° of flexion. The specimens were tested in the intact state, followed by sequential sectioning of the PCL, dMCL, POL and sMCL. The order of sectioning of the dMCL and POL was randomized, providing n = 4 for each cutting sequence. Changes in posteromedial displacements and rotatory laxities were measured, as were the biomechanical contributions of the dMCL, POL and sMCL in resisting these loads in a PCL-deficient knee.
    Results: Overall, it was observed that POL transection caused increased posteromedial displacements and internal rotations in extension, whereas dMCL transection had less of an effect in extension and more of an effect in flexion. Although statistically significant differences were identified during most loading scenarios, the increases in posteromedial displacements and rotatory laxity due to transection of the POL or dMCL were usually small. However, when internal torque was applied to the PCL-deficient knee, the combined torque contributions of the dMCL and POL towards resisting rotation was similar to that of the sMCL.
    Conclusion: The dMCL and POL are both important secondary stabilizers to posteromedial translation in the PCL-deficient knee, with alternating roles depending on flexion angle. Thus, in a PCL-deficient knee, concomitant injuries to either the POL or dMCL should be addressed with the aim of reducing the risk of PCL reconstruction failure.
    MeSH term(s) Biomechanical Phenomena ; Cadaver ; Humans ; Joint Instability ; Knee Joint/anatomy & histology ; Ligaments, Articular/anatomy & histology ; Range of Motion, Articular ; Tibia ; Torque
    Language English
    Publishing date 2021-03-07
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1159064-6
    ISSN 1433-7347 ; 0942-2056
    ISSN (online) 1433-7347
    ISSN 0942-2056
    DOI 10.1007/s00167-021-06483-1
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article: Klinische Basisuntersuchung des Kniegelenkes

    Roessler, Philip P. / Wirtz, Dieter C. / Friedrich, Max J.

    Zeitschrift für Orthopädie und Unfallchirurgie

    2018  Volume 156, Issue 03, Page(s) 330–332

    Abstract: Zielsetzung: Die erfolgreiche Behandlung von Kniegelenkserkrankungen erfordert eine exakte Diagnose. Neben einer differenzierten Anamneseerhebung stellt die klinische Untersuchung dabei den wichtigsten Bestandteil in der Diagnostik von ... ...

    Abstract Zielsetzung: Die erfolgreiche Behandlung von Kniegelenkserkrankungen erfordert eine exakte Diagnose. Neben einer differenzierten Anamneseerhebung stellt die klinische Untersuchung dabei den wichtigsten Bestandteil in der Diagnostik von Kniegelenkserkrankungen dar.
    Methode: Das vorliegende Video erklärt die gängigen Provokationstests und Funktionsprüfungen, die in der Basisuntersuchung des Kniegelenkes zum Einsatz kommen. Neben der generellen Inspektion und Palpation liegt der Fokus hierbei auf den einzelnen Regionen Patella, Menisken, Kreuzbändern und Kollateralbändern.
    Schlussfolgerung: Der vorliegende Basisuntersuchungsgang ermöglicht eine strukturierte Herangehensweise an klinische Problemstellungen und kann, ergänzt um weitere spezifische und individuelle Tests eine gute Grundlage für die Diagnostik von Kniegelenkserkrankungen darstellen.
    Keywords Knie ; Basis ; klinische Untersuchung ; clinical examination ; knee ; basic
    Language German
    Publishing date 2018-03-12
    Publisher Georg Thieme Verlag KG
    Publishing place Stuttgart ; New York
    Document type Article
    ZDB-ID 2280747-0
    ISSN 1864-6743 ; 1438-941X ; 1864-6697 ; 0044-3220
    ISSN (online) 1864-6743 ; 1438-941X
    ISSN 1864-6697 ; 0044-3220
    DOI 10.1055/s-0043-125093
    Database Thieme publisher's database

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  10. Article ; Online: Germany has a high demand in meniscal allograft transplantation but is subject to health economic and legal challenges: a survey of the German Knee Society.

    Winkler, Philipp W / Faber, Svea / Balke, Maurice / Metzlaff, Sebastian / Niethammer, Thomas R / Roessler, Philip P / Henkelmann, Ralf / Kurme, Alexander / Colcuc, Sebastian / Zimmermann, Gerald / Petersen, Wolf / Diermeier, Theresa A

    Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA

    2022  Volume 30, Issue 7, Page(s) 2352–2357

    Abstract: Purpose: To determine the current status and demand of meniscal allograft transplantation (MAT) in Germany among members of the German Knee Society (= Deutsche Kniegesellschaft; DKG).: Methods: An online survey was conducted between May 2021 and June ...

    Abstract Purpose: To determine the current status and demand of meniscal allograft transplantation (MAT) in Germany among members of the German Knee Society (= Deutsche Kniegesellschaft; DKG).
    Methods: An online survey was conducted between May 2021 and June 2021 and sent to all members of the DKG. The survey questionnaire consisted of 19 questions to determine the demand and technical aspects of MAT among the participants and to identify areas of improvement in MAT in Germany.
    Results: Overall, 152 participants, 136 (89.5%) from Germany, 8 (5.3%) from Switzerland, 6 (4.0%) from Austria, and 2 (1.3%) from other countries completed the online survey, with the majority working in non-academic institutions. According to the regulations of the DKG, 87 (57.2%) participants were board certified as specialized knee surgeons and 97 (63.8%) worked primarily in the field of orthopedic sports medicine. MAT was considered clinically necessary in Germany by 139 (91.5%) participants. Patient age (83.6%), post-meniscectomy syndrome in isolated lateral (79.6%) and medial (71.7%) meniscus deficiency, and functional and athletic demands (43.4%) were the most important determinants to consider MAT in patients. Participants reported that reimbursement (82.9%), jurisdiction over the use of donor grafts (77.6%), and the availability of meniscal allografts (76.3%) are the main challenges in performing MAT in Germany. The most frequently used meniscal allograft types by 54 (35.5%) participants who had already performed MAT were fresh-frozen grafts (56.6%), peracetic acid-ethanol sterilized grafts (35.9%), and cryopreserved grafts (7.6%). Participants reported to perform suture-only fixation more often than bone block fixation for both medial (73.6% vs. 22.6%) and lateral (69.8% vs. 24.5%) MAT.
    Conclusion: More than 90% of the responding members of the DKG indicated that MAT is a clinically important and valuable procedure in Germany. Reimbursement, jurisdiction over the use of donor grafts, and the availability of meniscal allografts should be improved. This survey is intended to support future efforts to facilitate MAT in daily clinical practice in Germany.
    Level of evidence: Level V.
    MeSH term(s) Allografts ; Germany ; Humans ; Menisci, Tibial/transplantation ; Meniscus/surgery ; Surveys and Questionnaires
    Language English
    Publishing date 2022-01-31
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1159064-6
    ISSN 1433-7347 ; 0942-2056
    ISSN (online) 1433-7347
    ISSN 0942-2056
    DOI 10.1007/s00167-022-06889-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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