Plancher KD, Voigt C, Bernstein DN, Briggs KK, Petterson SC. Return to Sport in Middle-aged and Older Athletes After Unicompartmental Knee Arthroplasty at a Mean 10-Year Follow-up: Radiographic and Clinical Outcomes. Am J Sports Med. 2023 Jun;51(7):1799-1807. doi: 10.1177/03635465231163859. Epub 2023 Apr 24. PMID: 37092711.
そして膝可動時の運動(内側を軸にして大腿骨外側が屈曲とともに後ろに引き下がる)も健常膝と類似しているのである ※上画像は屈曲時と関節面の内外側接触位置をなぞった図 左が健常膝、真ん中がUKA、右が前・後十字靱帯残した人工膝関節置換膝(BCR-TKA) BCR-TKAは引き下がりが足りず、内側が軸とならず一緒に引き下がっている Kono K, Inui H, Tomita T, Yamazaki T, Taketomi S, Tanaka S. Bicruciate-retaining total knee arthroplasty reproduces in vivo kinematics of normal knees to a lower extent than unicompartmental knee arthroplasty. Knee Surg Sports Traumatol Arthrosc. 2020 Sep;28(9):3007-3015. doi: 10.1007/s00167-019-05754-2. Epub 2019 Oct 22. PMID: 31641811.
そもそものUKA後の術後2年以降のスポーツ復帰率(しかもサッカー等負担が大きいもの)は90%以上 Radhakrishnan GT, Magan A, Kayani B, Asokan A, Ronca F, Haddad FS. Return to Sport After Unicompartmental Knee Arthroplasty: A Systematic Review and Meta-analysis. Orthop J Sports Med. 2022 Mar 16;10(3):23259671221079285. doi: 10.1177/23259671221079285. PMID: 35321207; PMCID: PMC8935568.
理由は不明だが術後スポーツ制限しなくても良いと患者に伝えると54.2%はスポーツに復帰した(平均観察期間20.2ヵ月) もしかしたらUKAスポーツ復帰を妨げている最たる理由は医師の都合なのかもしれない Kleeblad LJ, Strickland SM, Nwachukwu BU, Kerkhoffs GMMJ, Pearle AD. Satisfaction with return to sports after unicompartmental knee arthroplasty and what type of sports are patients doing. Knee. 2020 Mar;27(2):509-517. doi: 10.1016/j.knee.2019.11.011. Epub 2020 Jan 8. PMID: 31926669.
参考文献 Guo J, Hou M, Shi G, Bai N, Huo M. iPACK block (local anesthetic infiltration of the interspace between the popliteal artery and the posterior knee capsule) added to the adductor canal blocks versus the adductor canal blocks in the pain management after total knee arthroplasty: a systematic review and meta-analysis. J Orthop Surg Res. 2022 Aug 12;17(1):387. doi: 10.1186/s13018-022-03272-5. PMID: 35962410; PMCID: PMC9373358.
必須アミノ酸が術後の筋萎縮を抑えたのであろう ●引用文献 Ueyama H, Kanemoto N, Minoda Y, Taniguchi Y, Nakamura H. 2020 Chitranjan S. Ranawat Award: Perioperative essential amino acid supplementation suppresses rectus femoris muscle atrophy and accelerates early functional recovery following total knee arthroplasty. Bone Joint J. 2020;102-B(6 Supple A):10-18. doi:10.1302/0301-620X.102B6.BJJ-2019-1370.R1
●文献↓ Wang L, Lee M, Zhang Z, Moodie J, Cheng D, Martin J. Does preoperative rehabilitation for patients planning to undergo joint replacement surgery improve outcomes? A systematic review and meta-analysis of randomised controlled trials. BMJ Open. 2016 Feb 2;6(2):e009857. doi: 10.1136/bmjopen-2015-009857. PMID: 26839013; PMCID: PMC4746481.
●余談 ERAS:Enhanced Recovery After Surgery (術前後・周術期管理を徹底的に吟味しプロトコルを作成し術後回復を早めるのを試みる働き) の海外ガイドラインにも参考文献として採用されているので信憑性は高いと考えている(私見)
Wainwright TW, Gill M, McDonald DA, Middleton RG, Reed M, Sahota O, Yates P, Ljungqvist O. Consensus statement for perioperative care in total hip replacement and total knee replacement surgery: Enhanced Recovery After Surgery (ERAS®) Society recommendations. Acta Orthop. 2020 Feb;91(1):3-19. doi: 10.1080/17453674.2019.1683790. Epub 2019 Oct 30. Update in: Acta Orthop. 2020
大腿骨ベースの内反膝はKJLOが2.2°外反だが、内側開大式高位脛骨骨切り術(MOWHTO)行うと術後更に3~5°外反する Goshima K, Sawaguchi T, Shigemoto K, Iwai S, Fujita K, Yamamuro Y. Comparison of Clinical and Radiologic Outcomes Between Normal and Overcorrected Medial Proximal Tibial Angle Groups After Open-Wedge High Tibial Osteotomy. Arthroscopy. 2019 Oct;35(10):2898-2908.e1. doi: 10.1016/j.arthro.2019.04.030. PMID: 31604511.
術後KJLOが4°以上だと不適切な接触圧の為か術後不良となるPark JG, Han SB, Jang KM. Association of preoperative tibial varus deformity with joint line orientation and clinical outcome after openwedge high tibial osteotomy for medial compartment osteoarthritis: a propensity score-matched analysis. Am J Sports Med. 2021; 49(13):3551-3560
また術後MPTA(脛骨骨軸と脛骨関節面内側との角度)が95°以上になっても関節内側に荷重かかるようになるため予後不良 Akamatsu Y, Kumagai K, Kobayashi H, Tsuji M, Saito T. Effect of increased coronal inclination of the tibial plateau after opening-wedge high tibial osteotomy. Arthroscopy. 2018;34(7):2158-2169.e2152.
①DFOは深屈曲時の大腿骨ー脛骨接触面積や接触圧が課題となりやすいため Wylie JD, Scheiderer B, Obopilwe E, et al. The effect of lateral opening wedge distal femoral varus osteotomy on tibiofemoral contact mechanics through knee flexion. Am J Sports Med. 2018;46(13): 3237-3244
②そもそも大腿骨変形ベースの内反膝が全体の8%程度しかない Feucht MJ, Winkler PW, Mehl J, et al. Isolated high tibial osteotomy is appropriate in less than two-thirds of varus knees if excessive overcorrection of the medial proximal tibial angle should be avoided. Knee Surg Sports Traumatol Arthrosc. 2020;29(10):3299-3309.
Tsikandylakis G, Kärrholm JN, Hallan G, Furnes O, Eskelinen A, Mäkelä K, Pedersen AB, Overgaard S, Mohaddes M. Is there a reduction in risk of revision when 36-mm heads instead of 32 mm are used in total hip arthroplasty for patients with proximal femur fractures? Acta Orthop. 2020 Aug;91(4):401-407. doi: 10.1080/17453674.2020.1752559. Epub 2020 Apr 14. PMID: 32285736; PMCID: PMC8023875.
●考察 ・28mm×32mmなら32mmが脱臼少ない Kostensalo I,et al.Acta Orthop 2013 ・カップ径が大きくなると36mm骨頭はライナーの強度上使えない ●私見 脱臼率は展開法が大きな要因である(JBJSの大規模調査でも証明済) Hoskins W,et al. Early Rate of Revision of Total Hip Arthroplasty Related to Surgical Approach: An Analysis of 122,345 Primary Total Hip Arthroplasties. J Bone Joint Surg Am. 2020 Nov 4;102(21):1874-1882.