Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis

Purpose In contrast to bone cuts, soft-tissue releases cannot be planned sufficiently prior to total knee arthroplasty (TKA). Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether...
Ausführliche Beschreibung

Gespeichert in:

Autor*in:	Matziolis, Georg [verfasserIn] Matziolis, Doerte Perka, Carsten

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2011

Schlagwörter:	Total Knee Arthroplasty Mechanical Axis Ligamentous Instability Femoral Resection Tibial Resection

Anmerkung:	© Springer-Verlag 2011

Übergeordnetes Werk:	Enthalten in: International orthopaedics - Berlin : Springer, 1977, 36(2011), 1 vom: 15. Juni, Seite 79-82
Übergeordnetes Werk:	volume:36 ; year:2011 ; number:1 ; day:15 ; month:06 ; pages:79-82

Links:	Volltext

DOI / URN:	10.1007/s00264-011-1294-7

Katalog-ID:	SPR003261425

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245	1	0	\|a Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis
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520			\|a Purpose In contrast to bone cuts, soft-tissue releases cannot be planned sufficiently prior to total knee arthroplasty (TKA). Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). Conclusions We recommend planning the intra-operative release and tibial bone cut using long standing X-rays.
650		4	\|a Total Knee Arthroplasty \|7 (dpeaa)DE-He213
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publishDate	2011
allfields	10.1007/s00264-011-1294-7 doi (DE-627)SPR003261425 (SPR)s00264-011-1294-7-e DE-627 ger DE-627 rakwb eng Matziolis, Georg verfasserin aut Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2011 Purpose In contrast to bone cuts, soft-tissue releases cannot be planned sufficiently prior to total knee arthroplasty (TKA). Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). Conclusions We recommend planning the intra-operative release and tibial bone cut using long standing X-rays. Total Knee Arthroplasty (dpeaa)DE-He213 Mechanical Axis (dpeaa)DE-He213 Ligamentous Instability (dpeaa)DE-He213 Femoral Resection (dpeaa)DE-He213 Tibial Resection (dpeaa)DE-He213 Matziolis, Doerte aut Perka, Carsten aut Enthalten in International orthopaedics Berlin : Springer, 1977 36(2011), 1 vom: 15. Juni, Seite 79-82 (DE-627)253724376 (DE-600)1459230-7 1432-5195 nnns volume:36 year:2011 number:1 day:15 month:06 pages:79-82 https://dx.doi.org/10.1007/s00264-011-1294-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 36 2011 1 15 06 79-82
spelling	10.1007/s00264-011-1294-7 doi (DE-627)SPR003261425 (SPR)s00264-011-1294-7-e DE-627 ger DE-627 rakwb eng Matziolis, Georg verfasserin aut Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2011 Purpose In contrast to bone cuts, soft-tissue releases cannot be planned sufficiently prior to total knee arthroplasty (TKA). Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). Conclusions We recommend planning the intra-operative release and tibial bone cut using long standing X-rays. Total Knee Arthroplasty (dpeaa)DE-He213 Mechanical Axis (dpeaa)DE-He213 Ligamentous Instability (dpeaa)DE-He213 Femoral Resection (dpeaa)DE-He213 Tibial Resection (dpeaa)DE-He213 Matziolis, Doerte aut Perka, Carsten aut Enthalten in International orthopaedics Berlin : Springer, 1977 36(2011), 1 vom: 15. Juni, Seite 79-82 (DE-627)253724376 (DE-600)1459230-7 1432-5195 nnns volume:36 year:2011 number:1 day:15 month:06 pages:79-82 https://dx.doi.org/10.1007/s00264-011-1294-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 36 2011 1 15 06 79-82
allfields_unstemmed	10.1007/s00264-011-1294-7 doi (DE-627)SPR003261425 (SPR)s00264-011-1294-7-e DE-627 ger DE-627 rakwb eng Matziolis, Georg verfasserin aut Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2011 Purpose In contrast to bone cuts, soft-tissue releases cannot be planned sufficiently prior to total knee arthroplasty (TKA). Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). Conclusions We recommend planning the intra-operative release and tibial bone cut using long standing X-rays. Total Knee Arthroplasty (dpeaa)DE-He213 Mechanical Axis (dpeaa)DE-He213 Ligamentous Instability (dpeaa)DE-He213 Femoral Resection (dpeaa)DE-He213 Tibial Resection (dpeaa)DE-He213 Matziolis, Doerte aut Perka, Carsten aut Enthalten in International orthopaedics Berlin : Springer, 1977 36(2011), 1 vom: 15. Juni, Seite 79-82 (DE-627)253724376 (DE-600)1459230-7 1432-5195 nnns volume:36 year:2011 number:1 day:15 month:06 pages:79-82 https://dx.doi.org/10.1007/s00264-011-1294-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 36 2011 1 15 06 79-82
allfieldsGer	10.1007/s00264-011-1294-7 doi (DE-627)SPR003261425 (SPR)s00264-011-1294-7-e DE-627 ger DE-627 rakwb eng Matziolis, Georg verfasserin aut Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2011 Purpose In contrast to bone cuts, soft-tissue releases cannot be planned sufficiently prior to total knee arthroplasty (TKA). Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). Conclusions We recommend planning the intra-operative release and tibial bone cut using long standing X-rays. Total Knee Arthroplasty (dpeaa)DE-He213 Mechanical Axis (dpeaa)DE-He213 Ligamentous Instability (dpeaa)DE-He213 Femoral Resection (dpeaa)DE-He213 Tibial Resection (dpeaa)DE-He213 Matziolis, Doerte aut Perka, Carsten aut Enthalten in International orthopaedics Berlin : Springer, 1977 36(2011), 1 vom: 15. Juni, Seite 79-82 (DE-627)253724376 (DE-600)1459230-7 1432-5195 nnns volume:36 year:2011 number:1 day:15 month:06 pages:79-82 https://dx.doi.org/10.1007/s00264-011-1294-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 36 2011 1 15 06 79-82
allfieldsSound	10.1007/s00264-011-1294-7 doi (DE-627)SPR003261425 (SPR)s00264-011-1294-7-e DE-627 ger DE-627 rakwb eng Matziolis, Georg verfasserin aut Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis 2011 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier © Springer-Verlag 2011 Purpose In contrast to bone cuts, soft-tissue releases cannot be planned sufficiently prior to total knee arthroplasty (TKA). Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). Conclusions We recommend planning the intra-operative release and tibial bone cut using long standing X-rays. Total Knee Arthroplasty (dpeaa)DE-He213 Mechanical Axis (dpeaa)DE-He213 Ligamentous Instability (dpeaa)DE-He213 Femoral Resection (dpeaa)DE-He213 Tibial Resection (dpeaa)DE-He213 Matziolis, Doerte aut Perka, Carsten aut Enthalten in International orthopaedics Berlin : Springer, 1977 36(2011), 1 vom: 15. Juni, Seite 79-82 (DE-627)253724376 (DE-600)1459230-7 1432-5195 nnns volume:36 year:2011 number:1 day:15 month:06 pages:79-82 https://dx.doi.org/10.1007/s00264-011-1294-7 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_SPRINGER SSG-OLC-PHA GBV_ILN_11 GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_31 GBV_ILN_32 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_74 GBV_ILN_90 GBV_ILN_95 GBV_ILN_100 GBV_ILN_101 GBV_ILN_105 GBV_ILN_110 GBV_ILN_120 GBV_ILN_138 GBV_ILN_150 GBV_ILN_151 GBV_ILN_152 GBV_ILN_161 GBV_ILN_170 GBV_ILN_171 GBV_ILN_187 GBV_ILN_206 GBV_ILN_213 GBV_ILN_224 GBV_ILN_230 GBV_ILN_250 GBV_ILN_267 GBV_ILN_281 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_636 GBV_ILN_702 GBV_ILN_711 GBV_ILN_2001 GBV_ILN_2003 GBV_ILN_2004 GBV_ILN_2005 GBV_ILN_2006 GBV_ILN_2007 GBV_ILN_2008 GBV_ILN_2009 GBV_ILN_2010 GBV_ILN_2011 GBV_ILN_2014 GBV_ILN_2015 GBV_ILN_2020 GBV_ILN_2021 GBV_ILN_2025 GBV_ILN_2026 GBV_ILN_2027 GBV_ILN_2031 GBV_ILN_2034 GBV_ILN_2037 GBV_ILN_2038 GBV_ILN_2039 GBV_ILN_2044 GBV_ILN_2048 GBV_ILN_2049 GBV_ILN_2050 GBV_ILN_2055 GBV_ILN_2057 GBV_ILN_2059 GBV_ILN_2061 GBV_ILN_2064 GBV_ILN_2065 GBV_ILN_2068 GBV_ILN_2070 GBV_ILN_2086 GBV_ILN_2088 GBV_ILN_2093 GBV_ILN_2106 GBV_ILN_2107 GBV_ILN_2108 GBV_ILN_2110 GBV_ILN_2111 GBV_ILN_2112 GBV_ILN_2113 GBV_ILN_2116 GBV_ILN_2118 GBV_ILN_2119 GBV_ILN_2122 GBV_ILN_2129 GBV_ILN_2143 GBV_ILN_2144 GBV_ILN_2147 GBV_ILN_2148 GBV_ILN_2152 GBV_ILN_2153 GBV_ILN_2188 GBV_ILN_2190 GBV_ILN_2232 GBV_ILN_2336 GBV_ILN_2446 GBV_ILN_2470 GBV_ILN_2472 GBV_ILN_2507 GBV_ILN_2522 GBV_ILN_2548 GBV_ILN_4012 GBV_ILN_4035 GBV_ILN_4037 GBV_ILN_4046 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4242 GBV_ILN_4246 GBV_ILN_4249 GBV_ILN_4251 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4328 GBV_ILN_4333 GBV_ILN_4334 GBV_ILN_4335 GBV_ILN_4336 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4393 GBV_ILN_4700 AR 36 2011 1 15 06 79-82
language	English
source	Enthalten in International orthopaedics 36(2011), 1 vom: 15. Juni, Seite 79-82 volume:36 year:2011 number:1 day:15 month:06 pages:79-82
sourceStr	Enthalten in International orthopaedics 36(2011), 1 vom: 15. Juni, Seite 79-82 volume:36 year:2011 number:1 day:15 month:06 pages:79-82
format_phy_str_mv	Article
institution	findex.gbv.de
topic_facet	Total Knee Arthroplasty Mechanical Axis Ligamentous Instability Femoral Resection Tibial Resection
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container_title	International orthopaedics
authorswithroles_txt_mv	Matziolis, Georg @@aut@@ Matziolis, Doerte @@aut@@ Perka, Carsten @@aut@@
publishDateDaySort_date	2011-06-15T00:00:00Z
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id	SPR003261425
language_de	englisch
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Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). 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author	Matziolis, Georg
spellingShingle	Matziolis, Georg misc Total Knee Arthroplasty misc Mechanical Axis misc Ligamentous Instability misc Femoral Resection misc Tibial Resection Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis
authorStr	Matziolis, Georg
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topic_title	Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis Total Knee Arthroplasty (dpeaa)DE-He213 Mechanical Axis (dpeaa)DE-He213 Ligamentous Instability (dpeaa)DE-He213 Femoral Resection (dpeaa)DE-He213 Tibial Resection (dpeaa)DE-He213
topic	misc Total Knee Arthroplasty misc Mechanical Axis misc Ligamentous Instability misc Femoral Resection misc Tibial Resection
topic_unstemmed	misc Total Knee Arthroplasty misc Mechanical Axis misc Ligamentous Instability misc Femoral Resection misc Tibial Resection
topic_browse	misc Total Knee Arthroplasty misc Mechanical Axis misc Ligamentous Instability misc Femoral Resection misc Tibial Resection
format_facet	Elektronische Aufsätze Aufsätze Elektronische Ressource
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title	Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis
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title_full	Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis
author_sort	Matziolis, Georg
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author_browse	Matziolis, Georg Matziolis, Doerte Perka, Carsten
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author-letter	Matziolis, Georg
doi_str_mv	10.1007/s00264-011-1294-7
title_sort	pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis
title_auth	Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis
abstract	Purpose In contrast to bone cuts, soft-tissue releases cannot be planned sufficiently prior to total knee arthroplasty (TKA). Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). Conclusions We recommend planning the intra-operative release and tibial bone cut using long standing X-rays. © Springer-Verlag 2011
abstractGer	Purpose In contrast to bone cuts, soft-tissue releases cannot be planned sufficiently prior to total knee arthroplasty (TKA). Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). Conclusions We recommend planning the intra-operative release and tibial bone cut using long standing X-rays. © Springer-Verlag 2011
abstract_unstemmed	Purpose In contrast to bone cuts, soft-tissue releases cannot be planned sufficiently prior to total knee arthroplasty (TKA). Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). Conclusions We recommend planning the intra-operative release and tibial bone cut using long standing X-rays. © Springer-Verlag 2011
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container_issue	1
title_short	Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis
url	https://dx.doi.org/10.1007/s00264-011-1294-7
remote_bool	true
author2	Matziolis, Doerte Perka, Carsten
author2Str	Matziolis, Doerte Perka, Carsten
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doi_str	10.1007/s00264-011-1294-7
up_date	2024-07-03T18:23:03.502Z
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Intra-operative evaluation of the extension gap after tibial or femoral resection may result in an unnecessarily excessive bone resection. The present study examines whether extension gap asymmetry can be calculated from the pre-operative long standing X-ray. Methods In this retrospective study, 32 patients with navigated unconstrained TKA were included. The pre-operative malalignment was measured on long standing X-rays and compared with the extension gap asymmetry that was documented by the navigation system intra-operatively. Results The mean pre-operative malalignment was 9.8° (20° valgus to 14.8° varus). The intra-operatively measured extension gap showed a mean asymmetry of 3.4 ± 2.4 mm. Both correlated following the equation: asymmetry [mm] = 0.35 * malalignment [°] (R = 0.855, P < 0.001). 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Pre-operative frontal plane malalignment predicts the extension gap asymmetry in knee osteoarthritis

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