Review Article Healthcare and Scientific Treatment of Knee Osteoarthritis

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Journal of Healthcare Engineering
Volume 2022, Article ID 5919686, 7 pages
https://doi.org/10.1155/2022/5919686

Review Article
Healthcare and Scientific Treatment of Knee Osteoarthritis

          Huan Wang               and Baoan Ma
          Orthopedics, The Second Affiliated Hospital of the Air Military Force Military Medical University, Xi’an,
          Shanxi Province 710000, China

          Correspondence should be addressed to Baoan Ma; gukemba@fmmu.edu.cn

          Received 2 November 2021; Revised 29 November 2021; Accepted 8 January 2022; Published 28 January 2022

          Academic Editor: Rahim Khan

          Copyright © 2022 Huan Wang and Baoan Ma. This is an open access article distributed under the Creative Commons Attribution
          License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is
          properly cited.
          Knee osteoarthritis is a chronic degenerative disease companied with chronic knee pain and dysfunction. However, the etiology
          and pathogenesis of knee osteoarthritis were unclear. Currently, age, diet, trauma, obesity, and inheritance are the main risk
          factors. The major pathological hallmarks of knee osteoarthritis included subchondral bone sclerosis, articular cartilage de-
          generation, arthrosynovitis, and osteophyte. With the acceleration of the aging process in China, the treatment of knee arthritis
          and the methods to improve the quality of life have become the focus of medical staff. Currently, therapies in clinical practice
          include surgery and nonoperative treatment; however, the clinical effects of different individuals at different stages will still be very
          different. This article reviews the recent advances in the treatment of knee osteoarthritis from three aspects: nonsurgical treatment,
          surgical treatment, and modern new medical means.

1. Introduction                                                           1.1. The Etiology and Pathogenesis of KOA. Currently, age,
                                                                          diet, trauma, obesity, and inheritance are the main risk factors
Knee osteoarthritis (KOA) is a type of chronic degenerative               [8–10]. The articular cartilage layer is worn out, the biome-
arthritis [1], and its chronic inflammation is characterized by            chanical changes in contact with the subchondral bone, and the
degeneration or loss of articular cartilage, articular margin,            loss and reduction of articular fluid with the acceleration of the
and subchondral bone regeneration [2]. However, the eti-                  aging process. In addition, with weight gain, ligament de-
ology and pathogenesis of knee osteoarthritis were unclear.               generation, relaxation, and muscle weakness, there were ob-
With the acceleration of the aging process in China, the                  vious degenerative changes in articular cartilage and
incidence rate of KOA is increasing [3]. The methods of                   subchondral bone [11]. Inflammatory cells inside the joint,
improving the quality of life [4–7] and the living standards of           including macrophages, release inflammatory factors [12–14],
patients become an urgent problem for medical workers. At                 accelerate the degradation of articular cartilage, aggravate the
present, there is still controversy about which intervention is           inflammation of the synovial joint, and produce early in-
the best method.                                                          flammatory pain. As mechanistic research continues, relevant
    Currently therapies in clinical practice include surgery              cytokines and signaling pathways involved in developing ar-
and nonoperative treatment; however, the clinical effects of               thritis are also constantly mined, including TGF-β, neural
different individuals at different stages will still be very                growth factor (NGF), and hypoxia-inducible factor (HIF)
different. This article reviews the recent advances in the                 [15, 16]. Although the pathogenesis of KOA is still unclear, we
treatment of knee osteoarthritis from three aspects: non-                 have found the key to opening the door, provided a strong basis
surgical treatment, surgical treatment, and modern new                    for better achieving the molecular level of treatment inter-
medical means.                                                            vention; moreover, we do our best to improve the quality of life.
2                                                                                           Journal of Healthcare Engineering

2. Conservative Treatment of                                      2.2. Drug Treatments
   Knee Osteoarthritis                                            2.2.1. Topical Treatment. Zhao et al. [36] found that oral
At present, there are many conservative treatments methods        loxoprofen sodium (LOX-O) was found to be comparable to
for primary KOA in middle-aged; although it can play a role       loxoprofen sodium hydrogel transdermal patch (LOX-T),
in improving and delay progressing of the disease, there are      indicating promising topical use of nonsteroid anti-in-
some elderly patients with poor curative effects.                  flammatory drugs (NSAIDS). Coskun Benlidayi et al. [37]
                                                                  found that both ibuprofen gels and creams had significant
                                                                  clinical efficacy. Wadsworth et al. [38] found that topical
2.1. Nondrug Treatment. In the early stage of KOA, patients       administration of 2% sodium diclofenac had not only a good
had no obvious symptoms, and it did not impact on work            clinical effect, but also, it was well tolerated by patients.
and life; patients can take actions like self-management,         Moreover, piroxicam, Tongning gel, also has an obvious
prevention to improve the function of the knee joint and          curative effect [39, 40]. At the same time, Teymouri et al. [41]
improve the quality of life, moreover, delaying and changing      found that the bioactive ingredients of herbal gels have
the pathological process of osteoarthritis.                       obvious healing effects on knee pain, stiffness, and mobility,
                                                                  such as hemp oil, quercetin, Phyllanthus amarus Schumach.
                                                                  & Thonn, and Guilu Erxian Glue [40, 42–44].
2.1.1. Health Education and Health Promotion. Through
health education, patients could cultivate a healthy lifestyle
including avoiding wind chill, weight loss, and reasonable        2.2.2. Oral Treatment
physical exercise, avoiding such as climbing, squatting, and
long-distance running. Effective emotional counseling to           (1) Nutritional Articular Cartilage. The European Associa-
guide patients is particularly important [17, 18]. The effect of   tion for the Osteoporosis and Economic Areas of Osteo-
weight on the knee is of unique importance, and weight loss       arthritis (ESCEO) recommends glucosamine sulfate (GS)
makes patients the most benefited from interventions               and chondroitin sulfate (CS) as first-line treatments for knee
[19–21]. Hacken et al. [21] found that weight loss was a          osteoarthritis (OA) [45]. Lomonte et al. [46] found that the
reliable method to reduce pain and stiffness and improve           combination of new glucosamine sulfate and chondroitin
function during the five-year follow-up. However, weight           sulfate had good efficacy and tolerance. Meanwhile, Lugo
control cannot be achieved by dieting. Pay special attention      et al. [47] found that undenatured type II collagen sup-
to the intake of fruits and vegetables, such as blueberries,      plements had good efficacy and be tolerated in regulating
raspberries, and grass pomegranates, which can reduce             symptoms of osteoarthritis in the knee.
arthritis pain [22].
                                                                  (2) NSAIDs. NSAIDs (nonsteroidal anti-inflammatory
                                                                  drugs) are the cornerstones of osteoarthritis (OA) therapy,
2.1.2. Exercise Therapy. Chronic knee pain seriously influ-        but NSAIDs have gastrointestinal toxicity, while taking
ences normal life of patients. Patients often have difficulty       gastric mucosal protective agents reduces adverse events in
choosing between restricted activity and appropriate and          the stomach [48]. In recent years, obvious upper gastroin-
reasonable exercise. The lack of formal therapeutic reha-         testinal and cardiovascular adverse events have made ra-
bilitation training is often the factor of causing the further    tional NSAIDs medication very important. It is
development of knee osteoarthritis [23]. The clinical effect of    recommended that patients with severe symptomatic OA
muscle strength training is remarkable, which can effectively      use weak opioids (e.g., tramadol) for a short time. Diacerein,
relieve pain in patients and promote the recovery of knee         an important inhibitor of new osteoarthritis IL-1, can sig-
function [24, 25]. At the same time, Dong et al. found that       nificantly improve the joint function of patients with os-
water sport was comparable to land exercise in the thera-         teoarthritis, delay the course of disease, reduce pain, and
peutic effect, but patients had better compliance and sat-         improve the quality of life of patients [49]. Simental-Mendı́a
isfaction [26]. Tai Chi in traditional medicine in China also     et al. [50] found that the avocado soybean unsaponifiables
has a good curative effect [27].                                   (ASU) was also beneficial for symptomatic KOA.

                                                                  (3) Traditional Chinese Medicine Treatment. Lai et al. [51]
2.1.3. Physical Therapy. There are many current physical          found that in the treatment of knee degenerative osteoar-
treatments, such as electromagnetic therapy [28], acu-            thritis, the 4-week treatment with Duhuo Jisheng decoction
puncture [29], ultrasound [30], massage [31], spa [32],           can reduce pain and stiffness and improve physical function.
cupping [33], yoga [34], and laser [35], but there are great      Other Chinese patent medicines include Biqi capsule,
differences in the treatment effect on different individuals,        Fuzheng Guben pill, Xiaohuoluo pill, Gujin pill, Huoxue
and their effect is to relax tense muscles, promote local          Zhitong capsule, Jiangu granule, and Xianling Gubao cap-
blood circulation, improve function of the knee joint, and        sule. Furthermore, the herbal formulation combined with
promote absorption and discharge of inflammatory                   conventional treatment appears to be more effective in
substances.                                                       improving the physiological function of the knee joint [52].
Journal of Healthcare Engineering                                                                                             3

3. Surgical Treatment                                            lines from the arthritic chamber to a relatively healthy
                                                                 chamber. Pannell et al. [69] found patients treated with HTO
3.1. Intraarticular Puncture and Injection of Knee Joint.        have an 8% increased risk of requiring replacement every 1
Intraarticular puncture and injection of knee joint is an        year, and older, higher rates of complications were more
invasive surgical treatment for KOA. Commonly used drugs         significant in women than in men. HTO can provide long-
for puncture and injection include glucocorticoid, ozone,        term survival for certain patients. Patients selected for this
hyaluronic acid, platelet-rich plasma, and mesenchymal           surgery should be carefully considered for their age, gender,
stem cells. Intraarticular injection of corticosteroids (IACI)   and osteoarthritis severity.
is a common method to relieve pain in patients with knee
osteoarthritis (OA). The effective time of intraarticular in-
jection of glucocorticoid is reported to be different, about      3.3.2. PFO. Proximal fibular osteotomy (PFO) is a simple
1–3 months, while F006, as a new microsphere-based tri-          and effective method for medial septal OA. Qin et al. [70]
amcinolone acetonide sustained-release preparation, pro-         performed a proximal fibula osteotomy (PFO) in 52 patients
longs the action time [53–56]. The mechanism of ozone may        with medial knee OA and varus deformity. The larger distal
be through activation of the cellular metabolism, reducing       displacement of the fibula head suggests a greater range of
prostaglandin synthesis, thereby relieving pain, improving       activity in the tibial fibula joint and a more pronounced
function, and quality of life [57], Intraarticular cavity in-    postoperative improvement in OA symptoms, and proximal
jection of ozone coupled with oral celecoxib and amino           bula osteotomy has proven very effective in young patients
glucose significantly reduced the pain intensity in patients      with medial knee osteoarthritis.
with mild to moderate KOA [58]. Currently, the volume and
large variability in the concentration of ozone treatment of
                                                                 3.3.3. DFO. Distal femur osteotomy (DFO) is a recognized
KOA exist at the time of injection, so more trials are needed
                                                                 treatment of femoral malformations and associated symp-
to determine the optimal dose of ozone. Hyaluronic acid
                                                                 toms (including osteoarthritis). It is commonly used to treat
(HA) is still in the second-line treatment of NSAIDs in KOA
                                                                 young and physically active patients who do not want a knee
patients, and the benefits are durable compared to IA [59].
                                                                 replacement. After DFO, 80% of patients could exercise
Platelet-rich plasma (PRP) is a safe treatment that benefits
                                                                 normally and 90% returned to normal work [71]. Shivji et al.
patients at least in the short term (up to 12 months) and is
                                                                 [72] retrospectively studied 83 patients with good DFO,
more effective than HA [60]. Transplanted MSC can dif-
                                                                 results with an average follow-up of 99 months, meaning
ferentiate directly into chondrocytes and promote cartilage
                                                                 survival of 113 months (95% CI 106–120), and 89% likeli-
regeneration, also secreting a range of growth factors and
                                                                 hood of survival of 10 years.
cytokines, where (platelet-derived growth factor) PDGF is
the most efficient growth factor and may contribute to tissue
integration during cartilage repair or tissue engineering        3.3.4. Knee Joint Replacement
[61, 62]. Early transplantation may yield better results in
long-term follow-up [63]. Mesenchymal stem cell therapy          (1) Univentricular Knee Arthroplasty. Univentricular knee
may be widely used in the future, as it may confer substantial   arthroplasty is an operation to protect the bones and preserve
benefit to patients with KOA.                                     ligaments. It has become a lasting and effective method for the
                                                                 treatment of end-stage single compartment KOA. It can ef-
                                                                 fectively reduce postoperative pain and reduce the incidence
3.2. Knee Arthroscopy. Knee clearing achieved good results       of postoperative complications [73]. Opioid demand was also
in early and middle KOA, and a randomized controlled trial       reduced when compared to total knee replacement (TKA)
indicated that knee arthroscopic loose lobectomy was more        [74]. Batailler et al. [75] through studies of robotic-assisted
effective than conservative treatment [64]; it can relieve the    single-cell knee replacement (57 medial and 23 exception side
symptoms for up to 2 years without increasing the risk of        surgeries) found that robotic total knee replacement (TKA)
joint replacement [65]. In addition, inlay plasty is the re-     has improved the accuracy of implant positioning and re-
placement of lost cartilage with an autograft harvested from     duced outliers in achieving planned limb alignment [76].
nonload-bearing areas of articular cartilage [66]. Micro-
fracture (MF) prompts the recruitment of pluripotent bone        (2) TKA. Total knee arthroplasty (TKA) is a new technology
marrow-derived stromal cells to cartilage defects [67]. ACI is   for the treatment of knee diseases. The annual incidence of
an in vitro expansion of autologous chondrocytes harvested       KOA is estimated at 240 per 100,000 patients. About 400,000
from nonload-bearing regions of articular cartilage, then        initial total knee replacements are done each year in the US.
injected into the defect, and covered with a biodegradable       Patient-reported pain and functional outcome scores were
collagen membrane [68].                                          significantly improved after successful TKA surgery. Al-
                                                                 though the overall lifespan of the TKA prosthesis is affected
3.3. Osteotomy around the Knee                                   by numerous patients and prosthetic technology-related
                                                                 factors, in all, the average service life is 15–20 years. Cli-
3.3.1. HTO. The biomechanical goal of high tibia osteotomy       nicians are encouraged to ensure that after all nonsurgical
(HTO) is to readjust the load-bearing line within the coronal    treatments are exhausted, excellent treatment results can be
plane. The aim was to achieve the transfer of load-bearing       expected in population [77].
4                                                                                             Journal of Healthcare Engineering

4. Conclusion                                                    Acknowledgments
In conclusion, patients with KOA should first choose              The authors thank Mr. Xingguang Ren for his technical
nonsurgical treatment. If this method fails, the surgical        assistance in study and contribution to amending the lan-
treatment can be selected according to the patient’s actual      guage of the manuscripts. This work was financially sup-
situation. KOA should not use arthroscopic lavage and            ported by the National Natural Science Foundation of China
debridement as routine treatment as only some patients may       (81372297 and 81702660).
benefit. Neither method could alter disease progression. ACI
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