Original articleAccuracy of Partial Weight Bearing After Autologous Chondrocyte Implantation
Section snippets
Methods
We instructed 48 patients (31 men, 17 women) who had undergone ACI to the knee how to achieve PWB loading at 20%, 40%, 60%, and 80% of their individual BW using the bathroom scale method. After instruction and practice of each of the nominated weight-bearing levels, the ability to replicate the nominated loads within 5% of BW in both a stationary (static position: a situation that duplicated the practice setting) and during walking using a force platform was assessed. This assessment took place
Results
Despite differing patient numbers between the 3 weight-bearing conditions (static, immediate dynamic, 7-day dynamic retention), and across all weight-bearing levels, the average age and ratio of men to women was similar between all groups (see table 2). There was no difference in the frequency and severity of reported knee pain from immediate to 7-day retention testing or throughout the 4 different weight-bearing conditions (see table 2).
The 18 patients who completed initial static
Discussion
A specific PWB program plays an essential role in providing both a protective and a progressive stimulus to developing chondrocytes after ACI.26 It is therefore important for patients to closely replicate these graduated weight-bearing programs so that under- or overstimulation of the graft at any stage throughout the postoperative timeline does not occur, possibly hampering the attainment of best-quality tissue repair. Instruction and practice using a set of scales is a common and practical
Conclusions
Patients undergoing ACI were unable to replicate static and dynamic weight-bearing restrictions of 20%, 40%, and 60% BW within 5% of BW after practice and instruction using the bathroom scale technique. These results are both comparable and in contrast to those reported in the literature; however, research has focused on unaffected subjects8, 9, 10, 11, 12, 13, 17, 18 and patients with other orthopedic procedures.7, 9, 19 Patients were accurate in replication of the high weight-bearing loads
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Cited by (42)
Role of Antigravity Training in Rehabilitation and Return to Sport After Running Injuries
2022, Arthroscopy, Sports Medicine, and RehabilitationA probabilistic-based approach for computational simulation of bone fracture healing
2019, Computer Methods and Programs in BiomedicineReturn to running following knee osteochondral repair using an anti-gravity treadmill: A case report
2017, Physical Therapy in SportCitation Excerpt :An AlterG® Anti-Gravity Treadmill P200 model was used to manipulate loading during a graduated phased return to running (Chun & Mishra, 2014). The AlterG treadmill has been found to have minor deviations in unloading but these are less than 5% for 40–90% body weight (McNeill, de Heer, Bounds, & Coast, 2015) which is less than the typical deviations in accuracy in partial weight bearing with crutches after cartilage repair of the knee (Ebert, Ackland, Lloyd, & Wood, 2008). The programme comprised of 12 antigravity treadmill sessions over an 8-week period taking the patient from 30% to 80% bodyweight as detailed in Table 1.
How do leg press exercises comply with limited weight bearing?
2016, Physical Therapy in SportDesign and validation of GCH System 1.0 which measures the weight-bearing exerted on forearm crutches during aided gait
2013, Gait and PostureCitation Excerpt :GCH System 1.0 supposes an increase in accuracy on partial weight-bearing [2,4,7,9,19] and assisted training progress in aided gait based on biofeedback [4,5,18,19]. Both functions are based on the necessary objectivity on the weight-bearing executed by the crutches, in agreement with Ebert et al. [4], Hershko et al. [8] or Clark et al. [1]. The use of complementary systems of biomechanical analysis such as the GCH 1.0 also prevent clinical subjectivity in keeping with Buckley et al. [28] and Miralles and Miralles [29].
Autologous Chondrocyte Implantation
2013, Rehabilitation for the Postsurgical Orthopedic Patient: Third Edition
Supported by the Hollywood Private Hospital Research Foundation (grant nos. RF16, RF31), the National Health and Medical Research Council (grant no. ID254622), University of Western Australia (2007 Whitfeld Fellowship).
No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit on the authors or on any organization with which the authors are associated.