scholarly journals Influence of Posterior Condylar Offset on Maximal Flexion and Outcome Scales Following TKA in Asian Patients

2015 ◽  
Vol 4 (4) ◽  
pp. 15-21
Author(s):  
Sae Kwang Kwon ◽  
Nimesh Prakash Jain ◽  
Jong Yeal Kang ◽  
Yeon Gwi Kang ◽  
Tae Kyun Kim
Keyword(s):  
Clinical Outcome ◽  
Pain Score ◽  
Functional Outcomes ◽  
Mobile Bearing ◽  
Womac Pain ◽  
Level Of Evidence ◽  
Womac Pain Score ◽  
Posterior Condylar Offset ◽  
Postoperative Flexion ◽  
Posterior Condylar

Background: Infection complicates traditional joint reconstruction prostheses in up to 7% of cases, witBackground: Alteration in femoral posterior condylar offset (PCO) after total knee arthroplasty (TKA) has been reported to influence maximal flexion angle after TKA. However, there are contradictory reports about its influence on clinical outcome, and the effects of PCO alterations may vary with implant type.Question / purposes: The purpose of this study was to determine whether PCO alterations affect maximal flexion after TKA and other functional outcomes, and whether the effects of PCO alterations differ by implant type.Patients and Methods: Fifty consecutive cases of TKAs in each of four implant types, namely, fixed bearing (FB) cruciate retaining (CR) or posterior stabilized (PS), mobile bearing (MB) CR or PS were included in the study. Patients were evaluated for maximal flexion and clinical outcome scales. The PCO alteration was measured using pre- and postoperative true lateral knee radiographs. Correlations between PCO alterations and functional outcomes including maximal flexion were compared among the four implant types. Results: No significant correlation was found between PCO alterations and maximal flexion achieved in any of the four implant groups (Correlation Coefficient [CC]=-0.03, 0.14, -0.14, 0.04; p> 0.05). The mean maximal postoperative flexion was greater in PS implants than in CR implants (p <0.05). In MB-CR implanted knees, a greater PCO alteration was correlated with worse anterior knee pain score as measured by the PF scoring system (CC=-0.44, p=0.003) and worse WOMAC pain score (CC=-0.41, p=0.007). Conclusions: Our findings indicate that PCO alterations have no effect on maximal postoperative flexion after TKA regardless of the implant type. Whether the implant is of PS or CR type is a better predictor of the final flexion achieved. However, increased PCO is correlated with worse pain score in MB-CR implants. Level of Evidence: Level III, Retrospective comparative study

scholarly journals T2 mapping evaluation of changes in cartilage matrix after PRP and HA injection therapy in knee osteoarthritis: a prospective, randomized, double blind, placebo controlled study

2020 ◽  
Author(s):  
Matjaz Vogrin ◽  
Jakob Naranda ◽  
Mario Gorenjak ◽  
Tomaz Bajec ◽  
Domen Mongus ◽  
...  
Keyword(s):  
Placebo Group ◽  
Knee Osteoarthritis ◽  
Pain Score ◽  
T2 Mapping ◽  
Womac Score ◽  
Controlled Study ◽  
Womac Pain ◽  
Womac Pain Score ◽  
Knee Oa

Abstract BackgroundIn this study we focused on evaluating the effect of intra-articular platelet-rich plasma (PRP) and hyaluronic acid (HA) on the qualitative and quantitative properties of the articular cartilage in patients with knee osteoarthritis (OA).MethodsWe evaluated 264 patients undergoing treatment of moderate knee OA. Patients aged between 40 and 70 years were included with articular K-L stage ≤ 2. Patients were randomized into three groups and treated with three doses of intra-articular PRP, HA, or placebo injection. Patients were evaluated clinically and by using T2 mapping.ResultsBoth PRP (619.05 ± 243 ms; p = 2.7 × 10− 5) and HA (637.12 ± 273 ms; p = 1.×10− 4) group showed statistically significant lower post-application T2 relaxation times in comparison to the placebo group (859.80 ± 406 ms).Cartilage thickness increased significantly after PRP (2.41±0.87 vs. 2.58±0.97 mm, p=0.033) and HA (2.28±0.81 vs. 2.80±1.00 mm, p=1.8×10) applications. There was a significant decrease in WOMAC pain score by 30% (p=0,001) and the overall WOMAC score by 27 p=1.9×10-4%) in PRP group. The decrease in WOMAC pain score and the overall WOMAC score in the placebo group was similar to the results observed in the PRP group. In the HA group a significant decrease in WOMAC pain score by 14% (p=0,005) was observed only at the first follow-up, whereas no difference was observed at the second follow-up. ConclusionsT2 mapping of cartilage tissue may aid to monitor its properties after the intra-articular therapies in knee OA. However, there is a discrepancy between clinical findings and the results of T2 mapping, suggesting questionable grounds for applying intra-articular therapy.

scholarly journals Efficacy and Safety of Tongning Gel for Knee Osteoarthritis: A Multicentre, Randomized, Double-Blinded, Parallel, Placebo-Controlled, Clinical Trial

2020 ◽  
Vol 2020 ◽  
pp. 1-9
Author(s):  
Ye Zhao ◽  
Zhi Bi Shen ◽  
Ji Rong Ge ◽  
Wen Gang Liu ◽  
Jun Xing Yang ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Adverse Events ◽  
Knee Osteoarthritis ◽  
Physical Function ◽  
Pain Score ◽  
Adverse Reactions ◽  
Control Group ◽  
Womac Pain ◽  
Womac Pain Score ◽  
Experimental Group

Objective. To evaluate the efficacy and safety of Tongning Gel (TNG) compared to placebo-controlled (PC) for knee osteoarthritis (KOA). Methods. A multicentre, randomized, double-blinded, parallel, placebo-controlled, clinical trial was performed in 576 patients (432 patients in the TNG group, 144 patients in the PC group), and 1 in the experimental group withdrew due to nonuse of drug. Patients were randomized to receive TNG or PC applied to knee skin at 3g per time, 2 times per day, which lasted for 3 weeks. The Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain score was used to evaluate the primary efficacy of TNG and WOMAC stiffness and physical function and total scores were used to evaluate the secondary efficacy of TNG. All participants who received at least one dose of study drug were included in the safety analysis. This trial has been registered in Chinese Clinical Trial Registry (no. CTR20131276). Results. Primary efficiency outcome: there were significant differences in the decreased value of WOMAC pain score between two groups (P<0.05), and the decreased value of WOMAC pain score in the TNG group were better than those in the PC group (P<0.05). Secondary efficiency outcome: the WOMAC total score, WOMAC stiffness score, WOMAC physical function score, and the decrease of the above indexes of the two groups of patients after treatment were statistically significant (P<0.05), and the improvement of the above indexes in the TNG group was better than that of the PC group (P<0.05). Safety Evaluation. A total of 42 adverse events were reported by 29 patients: 25 adverse events reported by 16 patients (3.71%) in the experimental group and 17 adverse events were reported by 13 patients (9.03%) in the control group. And 8 adverse reactions were reported by 6 patients including 2 adverse reactions by 2 patients (0.46%) in the experimental group and 6 adverse reactions by 4 patients (2.78%) in the control group. Two cases of significant adverse events occurred in the experimental group. Both groups had one serious adverse event, respectively, which were not relevant to the intervention. Conclusion. These results of the trial demonstrate that TNG is superior to placebo in the treatment of patients with KOA, and TNG can improve other symptoms of KOA, such as stiffness and physical function. TNG is safe for the treatment of knee osteoarthritis as a whole.

Efficacy and safety of 12 weeks of osteoarthritic pain therapy with once-daily tramadol (Tramadol Contramid® OAD)

2007 ◽  
Vol 3 (5) ◽  
pp. 273 ◽  
Author(s):  
Ritchard L. Fishman, MD ◽  
Charles James Kistler, DO ◽  
Michael T. Ellerbusch, MD ◽  
Raul Tomas Aparicio, MD ◽  
Sharad S. Swami, MD ◽  
...  
Keyword(s):  
Pain Relief ◽  
Pain Score ◽  
Severe Pain ◽  
Womac Pain ◽  
Global Rating ◽  
Efficacy And Safety ◽  
Once Daily ◽  
Womac Pain Score ◽  
Responder Analysis ◽  
Percent Improvement

This placebo-controlled study examined the analgesic efficacy, safety, and clinical benefit of Tramadol Contramid OAD, a once-daily formulation with both immediate- and extended-release components. Five hundred and fifty-two patients with moderate to severe pain due to osteoarthritis (OA) of the knee were randomized into this multicenter, double-blind, parallel arm study. After randomization to Tramadol Contramid OAD 100, 200, or 300 mg, or to placebo, patients’ dose was titrated to the fixed randomized dose and maintained for 12 weeks. Efficacy was evaluated with the Patients’ Global Rating of Pain Relief (median ratings at maintenance visits), and the Western Ontario and McMaster University (WOMAC) Pain and Physical Function subscales (percent difference, baseline to end of study) as coprimary endpoints. A responder analysis was conducted (percentage of patients who achieved a 30 percent improvement on their baseline WOMAC pain score). The difference from placebo on the median Patient Global Rating of Pain Relief at the four maintenance visits was statistically significant (200 and 300 mg: p ≤ 0.001). Treatment was rated effective or very effective by 75 percent and 80 percent of patients randomized to Tramadol Contramid OAD 200 mg and 300 mg, respectively. There was a 46 percent (300-mg dose; p = 0.016) and 43 percent (200-mg dose; p = 0.05) improvement on the WOMAC pain score (baseline to the end of the study) with Tramadol Contramid OAD compared with 32 percent for placebo. The responder analysis demonstrated a statistically significant difference in the percentage of patients who achieved a 30 percent improvement in their baseline WOMAC pain score for both Tramadol Contramid OAD 200 mg (65 percent; p = 0.0095) and 300 mg (65 percent; p = 0.0104) compared with placebo (50 percent). The type and incidence of adverse events were typical of tramadol (nausea, dizziness/vertigo, vomiting, somnolence, and constipation) and the intensity was mild to moderate in 87 percent of patients who experienced them regardless of dose. This study shows the efficacy and safety of Tramadol Contramid OAD 200 mg and 300 mg in patients with moderate or severe pain of the knee due to OA.

Sports and Recreation Activity of Patients with Femoroacetabular Impingement before and after Arthroscopic Osteoplasty

2009 ◽  
Vol 37 (5) ◽  
pp. 917-922 ◽  
Author(s):  
Alexander Brunner ◽  
Monika Horisberger ◽  
Richard F. Herzog
Keyword(s):  
Clinical Outcome ◽  
Pain Score ◽  
Femoroacetabular Impingement ◽  
Case Series ◽  
Level Of Evidence ◽  
Level Of Activity ◽  
First Occurrence ◽  
And Function ◽  
Sports Activities

Background Hip arthroscopy represents a new and minimally invasive method of treating patients with femoroacetabular impingement (FAI). However, participation in popular sports after this procedure has not yet been analyzed. Hypotheses Arthroscopic treatment of FAI increases the level of popular sports activities, and this level of activity correlates with the clinical outcome in terms of pain and function. Study Design Case series; Level of evidence, 4. Methods Fifty-three patients (41 male, 12 female) were evaluated preoperatively and after a mean follow-up of 2.4 years (range, 2-3.2 years) after arthroscopic osteoplasty for cam and mixed FAI. Evaluation included the type and level of sports activities (sports frequency score [SFS]) as well as clinical outcome in terms of pain (VAS) and function (nonarthritic hip score [NAHS]). Results Forty-five of the 53 patients had regularly participated in popular sports until the first occurrence of FAI symptoms. Preoperatively, only 4 of these 45 patients had maintained their accustomed level of activity. At the final follow-up, 31 patients had returned to their full accustomed level of activity. None of the patients who had not been active in sports before the first occurrence of symptoms of FAI (n = 8) had begun participation in sports after arthroscopic osteoplasty. The SFS significantly increased from 0.78 to 1.84 (P < .001), and the mean VAS pain score significantly improved from 5.7 (range, 1-9) to 1.5 (range, 0-6) points (P < .001). The NAHS improved from 54.4 (range, 28.75-92.5) to 85.7 (range, 47.5-100) (P < .001). There was no significant correlation between SFS and NAHS (r = .051, P = .35), as well as between SFS and VAS pain score (r = .159, P = .140) preoperatively, but a significant correlation was seen at the time of the last postoperative follow-up (SFS/NAHS: r = .392, P = .003; SFS/VAS: r = .242, P = .049). The 3 most frequent sports activities postoperatively were biking, hiking, and fitness. Conclusion Arthroscopic osteoplasty can significantly improve the rate and level of popular sports activities in patients with FAI. The level of postoperative sports activity directly correlates with the clinical outcome in terms of pain and function.

Three groups of dissatisfied patients exist after total knee arthroplasty: early, persistent, and late

2018 ◽  
Vol 100-B (2) ◽  
pp. 161-169 ◽  
Author(s):  
N. D. Clement ◽  
M. Bardgett ◽  
D. Weir ◽  
J. Holland ◽  
C. Gerrand ◽  
...  
Keyword(s):  
Total Knee Arthroplasty ◽  
Patient Satisfaction ◽  
Pain Score ◽  
Knee Arthroplasty ◽  
Womac Pain ◽  
Womac Pain Score ◽  
Increased Risk ◽  
Total Knee ◽  
One Year

Aims The primary aim of this study was to assess whether patient satisfaction one year after total knee arthroplasty (TKA) changed with longer follow-up. The secondary aims were to identify predictors of satisfaction at one year, persistence of patient dissatisfaction, and late onset dissatisfaction in patients that were originally satisfied at one year. Patients and Methods A retrospective cohort consisting of 1369 patients undergoing a primary TKA for osteoarthritis that had not undergone revision were identified from an established arthroplasty database. Patient demographics, comorbidities, Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scores, and Short Form 12 (SF-12) questionnaire scores were collected preoperatively, and one and five years postoperatively. In addition, patient satisfaction was assessed at one and five years postoperatively. Logistic regression analysis was used to identify independent predictors of satisfaction at one and five years. Results The overall rate of satisfaction did not change from one (91.7%, n = 1255) to five (90.1%, n = 1234) years (p = 0.16). Approximately half (n = 53/114) of the patients who were dissatisfied at one year became satisfied with their TKA at five years, whereas 6% (n = 74/1255) of those who were satisfied at one year became dissatisfied at five years. At one year, patients with lung disease (p = 0.04), with depression (p = 0.001), with back pain (p <  0.001), undergoing unilateral TKA (p = 0.001), or with a worse preoperative WOMAC pain score (p = 0.04) were more likely to be dissatisfied. Patients with gastric ulceration (p = 0.04) and a worse WOMAC stiffness score (p = 0.047) were at increased risk of persistent dissatisfaction at five years. In contrast, a worse WOMAC pain score (p = 0.01) at one year was a predictor of dissatisfaction in previously satisfied patients at five years. Conclusion Three groups of dissatisfied patients exist after TKA: ‘early’ dissatisfaction at one year, ‘persistent’ dissatisfaction with longer follow-up, and ‘late’ dissatisfaction developing in previously satisfied patients at one year. All three groups have different independent predictors of satisfaction, and potentially addressing risk factors specific to these groups may improve patient outcome and their satisfaction. Cite this article: Bone Joint J 2018;100-B:161–9.

scholarly journals Efficacy of Balneotherapy and Mud Therapy in Patients with Knee Osteoarthritis: A Systematic Literature Review

2020 ◽  
Author(s):  
Hafiz Muhammad Asim Raza ◽  
Grazina Krutulyte ◽  
Inesa Rimdeikiene ◽  
Raimondas Savickas
Keyword(s):  
Knee Osteoarthritis ◽  
Pain Score ◽  
Clinical Studies ◽  
Meta Analysis ◽  
Womac Pain ◽  
Function Score ◽  
Womac Pain Score ◽  
Womac Function ◽  
Significant Difference ◽  
Mud Therapy

Abstract Objectives To identify literature reporting on thermal mineral water and mud therapy effectiveness on pain, stiffness and knee function in patients with knee osteoarthritis. Design Systematic evidence scan of MEDLINE and PubMed was performed to identify the randomized controlled trial studies published from 2004 to December 2018. Study selection Papers reporting the effect of balneotherapy and mud therapy for treating knee OA, a duration of ≥2 weeks and in which Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) scores were used as an outcome measure. Data extraction Not RCT, Studies not in English. Results A quantitative meta-analysis of ten studies (831 patients) was performed. Five clinical studies (407 patients) measured effectiveness of balneotherapy and there was significant difference between the groups in WOMAC pain score, WOMAC stiffness score and WOMAC function score, with the differences in favour of balneotherapy. Six clinical studies (500 patients) measured effectiveness of mud therapy and there was significant difference between the groups in WOMAC pain score, WOMAC stiffness score and WOMAC function score, with the differences in favour of mud therapy. Conclusion This meta-analysis indicates that balneotherapy and mud therapy were clinically effective in relieving pain, stiffness, and improving function, as assessed by WOMAC score.

scholarly journals Treatment of knee osteoarthritis with intra-articular injection of allogeneic adipose-derived stem cells (ADSCs) ELIXCYTE®: a phase I/II, randomized, active-control, single-blind, multiple-center clinical trial

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Cheng-Fong Chen ◽  
Chih-Chien Hu ◽  
Chen-Te Wu ◽  
Hung-Ta H. Wu ◽  
Chun-Shin Chang ◽  
...  
Keyword(s):  
Stem Cells ◽  
Adverse Events ◽  
Knee Osteoarthritis ◽  
Pain Score ◽  
Active Control ◽  
Womac Pain ◽  
Adipose Derived Stem Cells ◽  
Serious Adverse Events ◽  
Treatment Visit ◽  
Womac Pain Score

Abstract Objective To evaluate the safety and efficacy of intra-articular (IA) injection of allogeneic adipose-derived stem cells (ADSCs) ELIXCYTE® for knee osteoarthritis. Methods This was a patient-blind, randomized, active-control trial consisted of 4 arms including hyaluronic acid (HA) control and 3 ELIXCYTE® doses. A total of 64 subjects were screened, and 57 subjects were randomized. The primary endpoints included the changes from baseline to post-treatment visit of Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain score at Week 24 and the incidence of adverse events (AEs) and serious adverse events (SAEs). Results No ELIXCYTE®-related serious adverse events were reported during 96 weeks of follow-up and no suspected unexpected serious adverse reaction (SUSAR) or death was reported. The changes of the primary endpoint, WOMAC pain score at Week 24, showed significant differences in all ELIXCYTE® groups, as well as in HA groups between post-treatment visit and baseline. The ELIXCYTE® groups revealed significant decreases at Week 4 compared to HA group in WOMAC total scores, stiffness scores, functional limitation scores suggested the potential of ELIXCYTE® in earlier onset compared to those from HA. The significant differences of visual analog scale (VAS) pain score and Knee Society Clinical Rating System (KSCRS) functional activities score at Week 48 after ELIXCYTE® administration suggested the potential of ELIXCYTE® in the longer duration of the effectiveness compared to HA group. Conclusions ELIXCYTE® for knee osteoarthritis treatment was effective, safe, and well-tolerated. The efficacy results were showed that ELIXCYTE® conferred the earlier onset of reductions in pain scores and improvements in functional scores than HA group. Trial registration: ClinicalTrials.gov Identifier: NCT02784964. Registered 16 May, 2016—Retrospectively registered, https://clinicaltrials.gov/ct2/show/NCT02784964

scholarly journals Laser Acupuncture for Patients with Knee Osteoarthritis: A Systematic Review and Meta-Analysis of Randomized Placebo-Controlled Trials

2019 ◽  
Vol 2019 ◽  
pp. 1-10 ◽  
Author(s):  
Zhonggai Chen ◽  
Chiyuan Ma ◽  
Langhai Xu ◽  
Zhipeng Wu ◽  
Yuzhe He ◽  
...  
Keyword(s):  
Pain Score ◽  
Meta Analysis ◽  
Laser Acupuncture ◽  
Womac Pain ◽  
Controlled Trials ◽  
Short Term ◽  
Womac Pain Score ◽  
Significant Difference ◽  
Technical Features

Objectives. To provide updated evidence from randomized controlled trials (RCTs) on the effectiveness of laser acupuncture for patients with knee osteoarthritis (KOA). Methods. A literature search in 9 databases was conducted from their inception through February 2019. Randomized controlled trials (RCTs) written in English that compared active laser acupuncture with placebo in KOA patients were included. Two authors independently extracted data from these trials. Meta-analysis software was used to analyze the data. Included studies were assessed in terms of the follow-up period, the methodological quality, and appropriateness of their technical features. Results. Of 357 studies, seven RCTs (totaling 395 patients) met the inclusion criteria. The short-term outcomes showed that laser acupuncture offered significant pain relief over placebo when assessed by the 100 mm visual analog scale (VAS) pain score (p=0.02), while there was no significant difference between laser acupuncture and placebo based on Western Ontario and McMaster Universities Arthritis Index (WOMAC) pain score (p=0.25). For subgroup analysis, laser acupuncture had superiority over placebo in terms of both VAS and WOMAC pain scores in the appropriate technical features subgroup and the excellent methodological quality subgroup. But the effect of laser acupuncture on pain relief was not maintained in terms of either VAS (p=0.19) or WOMAC pain score (p=0.60). The pooled effect showed no significant difference between laser acupuncture and placebo at either time point according to WOMAC function scale, WOMAC stiffness scale, and quality of life outcome. Conclusions. Our findings indicate that laser acupuncture can effectively reduce knee pain for patients with KOA at short term when appropriate technical features are applied, but the effect likely fades away during the subsequent follow-up period.

Effect of laser moxibustion for knee osteoarthritis: a multi-site double-blind randomized controlled trial

2020 ◽  
pp. jrheum.200217
Author(s):  
Ling Zhao ◽  
Ke Cheng ◽  
Fan Wu ◽  
Jiong Du ◽  
Yue Chen ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Pain Score ◽  
Laser Treatment ◽  
Pain Reduction ◽  
Active Group ◽  
Womac Pain ◽  
Double Blind ◽  
Womac Pain Score ◽  
Clinically Significant ◽  
And Function

Objective To examine the effects of laser moxibustion on pain and function in patients with knee osteoarthritis. Methods A double-blind randomized clinical trial (4-week treatment, 20-week follow-up) was conducted. A total of 392 symptomatic knee osteoarthritis patients with moderate or greater clinically significant knee pain were randomly assigned to laser treatment or sham laser control group (1:1). Twelve sessions of laser moxibustion treatments or sham on the acupuncture points at the affected knee(s) were performed three times a week for 4 weeks. The primary outcome measurement was change in WOMAC pain score from baseline to week 4. Results Among the 392 randomized participants, 364 (92.86%) completed the trial. The median WOMAC pain score significantly decreased at week 4 in the active group than in the sham group (2.1; 95% CI, 1.6 to 2.6; P < .01). At week 24, compared to the sham laser, active laser treatment resulted in significant pain reduction and function improvement (3.0; 95% CI, 2.5 to 3.6; P < 0.01, and 14.8; 95% CI, 11.9 to 17.6; P < .01, respectively). The physical component of the quality of life significantly improved in the active group than in the sham control at week 4 (3.2; 95% CI, 1.3 to 5.0; P = 0.001) up to week 24 (5.1; 95% CI, 3.3 to 7.0; P < .001). No serious adverse effects were reported. Conclusion Laser moxibustion resulted in statistically and clinically significant pain reduction and function improvement following a 4-week treatment in patients with knee osteoarthritis. Keywords: 10.6μm laser moxibustion, knee osteoarthritis, pain, traditional Chinese medicine, phototherapy

scholarly journals Use of the KineSpring system in the treatment of medial knee osteoarthritis: preliminary results

Joints ◽  
2015 ◽  
Vol 03 (03) ◽  
pp. 129-135 ◽  
Author(s):  
Vincenzo Madonna ◽  
Vincenzo Condello ◽  
Gianluca Piovan ◽  
Daniele Screpis ◽  
Claudio Zorzi
Keyword(s):  
Knee Osteoarthritis ◽  
Pain Score ◽  
Knee Pain ◽  
Case Series ◽  
Clinical Results ◽  
Womac Pain ◽  
Level Of Evidence ◽  
Preliminary Results ◽  
Ikdc Score ◽  
Over Time

Purpose: the purpose of this study was to analyze our preliminary results obtained with the KineSpring system in patients suffering from medial compartment knee osteoarthritis (OA). Methods: between September 2012 and May 2014, 53 patients underwent treatment with the KineSpring system. Patient self-assessment was performed preoperatively and at 3, 6 and 12 months postoperatively, and included the KOOS, Tegner activity score, Lysholm functional knee score, VAS knee pain score, and IKDC score. Device- and procedure-related adverse events were recorded. Results: mean KOOS subscales, except for the Sport/Recreation subscale at six months, improved over time. Mean WOMAC Pain and Function domains, Lysholm score, IKDC score and VAS knee pain score improved over the follow-up period and were significantly improved at 3, 6 and 12 months postoperatively compared to baseline. Mean Tegner score improved slightly over time. In 5 of the 53 (9.4%) patients re-operation was necessary. In 3 patients the device was removed due to infection (one case) or persistent knee pain (two cases). Surgical arthrolysis was performed in two patients. Conclusions: in our preliminary experience, the KineSpring system gave good short-term clinical results. Level of evidence: Level IV, therapeutic case series.

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