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Operation of Arthritic Knee - HTO vs UKA -. Beom Koo Lee, M.D. Dept. of Orthopaedic Surgery Gil Medical Center, Gachon University. Surgical Options for Mono-compartmental OA. Arthroscopic Debridedment Cartilage Transplantation Osteotomy UKA TKA.
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Operation of Arthritic Knee- HTO vs UKA - Beom Koo Lee, M.D. Dept. of Orthopaedic Surgery Gil Medical Center, Gachon University
Surgical Options for Mono-compartmental OA • Arthroscopic Debridedment • Cartilage Transplantation • Osteotomy • UKA • TKA
Discussion Point to compare HTO vs UKA • Trend • Survival • Function • Kinematics • Indication & contraindication • Biologic aspect • Perioperative morbidity • Weight bearing, Rehabilitation, General Complication • Problem • Complication • Cosmetics • Technical Problem associated with TKA after Procedure
Trend of UKA • The early reported series of unicompartmental knee replacement done by experienced surgeons did not have encouraging results, with 70% survivorship reported at 5 to 7 years, and 65% and 53% survivorships reported at 11 and 12 years, respectively. Callahan, CORR, 2005
Trend of UKA, Recently • However, more recently the reports of unicompartmental knee replacement have been more encouraging with 94% survivorship at 10 years and 90% survivorship at 18 years. Callahan, CORR, 2005
Kinematics of UKA • The UKA preserve Normal Kinematics Patil, JBJS(Am), 2005
Kinematics of UKA Patil, JBJS(Am), 2005
Kinematics of UKA Patil, JBJS(Am), 2005
Kinematic of UKA • Variable Femoral Roll Back Dennis, JBJS(Am), 2001
Ideal Indications of HTO • Young • Active • Male • Varus Deformity Mont, AAOS ICL, 2004
Ideal Indications of UKA • Low Demand • Female • Elderly • No instability & Contracture • Correctable Deformity Mont, AAOS ICL, 2004
Range of Correction • UKA • Varus 10 - 20° • Valgus < 15° • Preferably 10° Pagnano, AAOS ICL, 2005 • osteotomy • Even Severe Deformity over 20 can be corrected by Dual Osteotomy. • Hanssen Insall 3rd edit
T-F angle : Varus 14° Mechanical Axis : Varus 20°
Lateral Instability • moderate to severe Lateral instability, and subluxation is contraindicated in HTO (Insall 3rd edit) • TKA is advisable in Great subluxation than UKA ( Insall 3rd edit) UKA is contraindicated for instability (ICL 2005) • Management in Mild Lateral Laxity in HTO • Slight Overcorrection • Reefing of LCL 배대경 • Spontaneous shortening 조세현
ACL Instability in UKA • ACL insufficiency ; relative contraindication in UKA ICL 2005 • HTO can be done in ACL Deficiency Noyes, Am J Sports Med, 2000
UKA in Elderly O’Rourke, CORR, 2005
Summary of Indications • UKA는 HTO에비해 비교적 Deformity 정도가 적어야하고, Ligament가 Stable 해야한다. • UKA에서 80세 이상의 노인이나, 40대의 여성에서 유리하다. • HTO는 활동이 많은 젊은 나이에 유리하다.
Survival of UKA O’Rourke, CORR, 2005
Survival of UKA Stukenborg, The Knee, 2001
Survival of MIS-UKA • Despite an accelerated recovery and decreased hospital stay in our MIS-UKA, the rate of Revision due to aseptic loosening and the overall Reoperation rate compare to unfavorably with those performed with an open technique. Engh, J Arthroplasty, 2006
Survival of HTO Insall & Scott, Surger of the Knee, 4th ed.
Survival of HTO & UKA 배대경, 대한슬관절학회지, 2001 HTO UKA 배대경, 대한정형외과학회지, 2002
Summary of Survival • 과교정된 HTO나 UKA는 결과가 비슷하다. • 젊은 나이에서는 UKA는 비교적 초기에 실패한다.
Results of HTO vs UKA Broughton, JBJS(Br), 1986 UKA Results were signinficantly Better than HTO
Function of HTO vs UKA Stukenborg, The Knee, 2001 Better Function in HTO
Pain of HTO vs UKA Broughton, JBJS(Br), 1986
Activity Level of HTO vs UKA Gillquist, CORR, 1991
Activity after HTO • Manual Labor: 17/34 • Jumping Sport: 45-60% Nagel, JBJS(Am), 1996 Odenbring, Acta Ortho Scan, 1989
ROM • HTO is better than UKA Koshino, APKS, 2006
Kneeling • HTO is better than UKA Koshino, APKS, 2006
Summary of Quality of Life • UKA에서 동통이 적으나, • 노동은 HTO에서 가능하다. • HTO에서 ROM이 더 좋고, Kneeling도 가능 하다.
Cartilage Healing after HTO • Joint Space • Preop.: 1.8mm • 3 Yr F-up: 2.9mm 송은규, 대한슬관절학회지, 2002 • Joint Space (2Y F/U) • Koshino -Joint space ;pre-op 1.1mm post-op 2.3mm -Pattern No reg;13/146 pink and yellow fibrillation 2/143 Partial coverage 50/143 Full coverrage 16/143 13,86,47/146
Pre-op Medial joint space narrowing Post-op 14 M Restored medial joint space
Cartilage defect in tibia Cartilage defect in femur Pre-op Regenerated cartilage Healed cartilage Post-op
Healed cartilage defect site POD 17 Months initial microfracture post-op 2 Yr POD 17 M
early perioperative complication after HTO vs UKA Broughton, JBJS(Br), 1986
Early Cx after HTO • Infection • Patella baja • Intraarticular fracture • Peroneal nerve dysfunction • Compartment syndrome • Vascular injury
DVT Case after HTO • Incidence : 41% Tuner, JBJS(Br), 1993
Retained Cement after UKA • Engh, J Arthroplasty, 2006
Rehabilitation • Easy in UKA • Faster Recovery Gillquist, CORR, 1991
Summary of early perioperative course • UKA가 HTO에비해 Rehabilitation이 쉽고,, Peri- operative Complication 면에서 월등하다.
Alignment • HTO : Overcorrection • UKA : Undercorrection