Nicolas Martinez-Carranza1,2, Peter Rockborn3, David Roberts4, Magnus Högström5,6, Anders Stålman7. 1. Department of Orthopaedics, Institution of Clinical Sciences, Intervention and Technology (CLINTEC), Karolinska Institutet, Stockholm, Sweden. 2. Division of Orthopaedics, Karolinska University Hospital, Stockholm, Sweden. 3. Orthopedic Clinic, Vrinnevi Hospital, Norrköping, Sweden. 4. Ortho Center Skåne and Department of Orthopaedics, Skane University Hospital, Malmo, Sweden. 5. Sports Medicine Umeå and Orthopedics, Umeå, Sweden. 6. Department of Surgical and Perioperative Sciences, Umeå University, Umeå, Sweden. 7. Stockholm Sports Trauma Research Center, MMK, Karolinska Institutet, Stockholm, Sweden.
Abstract
BACKGROUND: Full-depth cartilage lesions do not heal spontaneously and may progress to osteoarthritis (OA). Treatment for these lesions is warranted when symptomatic. At younger age, biological treatment remains the gold standard, but treatment in the middle-aged patient remains a clinical challenge and focal metal implants have been proposed. We aim to present the subjective outcome at 2 years and the risk of reoperation for any reason at midterm after surgery with a novel customized implant for focal femoral chondral lesions in the knee. METHODS: In a prospective cohort study, 30 patients were included between January 2013 and December 2017 at 9 different clinics in Sweden. The primary outcome was subjective outcome measurements (Visual Analogue Scale [VAS], EuroQoL [EQ5D], Knee injury and Osteoarthritis Outcome Score [KOOS]) at a minimum of 2 years. The secondary outcome was reoperations for any reason during the follow-up period until December 2019 (mean of 55 months) studied retrospectively by analyzing medical records. RESULTS: The VAS, EQ5D, and all the KOOS subscales showed significant improvements from preoperatively to the 2-year follow-up. The VAS showed the greatest improvement at the early (3 months) postoperative stage (P < 0.001). Five (7%) patients underwent reoperations and one of these was revised to hemiarthroplasty due to OA progression. No implant loosening was detected in any of the cases. CONCLUSIONS: This customized resurfacing metal implant showed good safety and patient satisfaction. The risk of OA progression and implant loosening is low. Subjective function and pain improved significantly.
BACKGROUND: Full-depth cartilage lesions do not heal spontaneously and may progress to osteoarthritis (OA). Treatment for these lesions is warranted when symptomatic. At younger age, biological treatment remains the gold standard, but treatment in the middle-aged patient remains a clinical challenge and focal metal implants have been proposed. We aim to present the subjective outcome at 2 years and the risk of reoperation for any reason at midterm after surgery with a novel customized implant for focal femoral chondral lesions in the knee. METHODS: In a prospective cohort study, 30 patients were included between January 2013 and December 2017 at 9 different clinics in Sweden. The primary outcome was subjective outcome measurements (Visual Analogue Scale [VAS], EuroQoL [EQ5D], Knee injury and Osteoarthritis Outcome Score [KOOS]) at a minimum of 2 years. The secondary outcome was reoperations for any reason during the follow-up period until December 2019 (mean of 55 months) studied retrospectively by analyzing medical records. RESULTS: The VAS, EQ5D, and all the KOOS subscales showed significant improvements from preoperatively to the 2-year follow-up. The VAS showed the greatest improvement at the early (3 months) postoperative stage (P < 0.001). Five (7%) patients underwent reoperations and one of these was revised to hemiarthroplasty due to OA progression. No implant loosening was detected in any of the cases. CONCLUSIONS: This customized resurfacing metal implant showed good safety and patient satisfaction. The risk of OA progression and implant loosening is low. Subjective function and pain improved significantly.
Authors: Peter Bollars; Marc Bosquet; Bruno Vandekerckhove; François Hardeman; Johan Bellemans Journal: Knee Surg Sports Traumatol Arthrosc Date: 2011-11-11 Impact factor: 4.342
Authors: N Martinez-Carranza; H E Berg; K Hultenby; H Nurmi-Sandh; L Ryd; A-S Lagerstedt Journal: Osteoarthritis Cartilage Date: 2013-02-18 Impact factor: 6.576
Authors: Ralph M Jeuken; Pieter P W van Hugten; Alex K Roth; Ufuk Tan Timur; Tim A E J Boymans; Lodewijk W van Rhijn; William D Bugbee; Pieter J Emans Journal: Orthop J Sports Med Date: 2021-10-15