Masataka Deie

Hiroshima University | HU

High tibial osteotomy (HTO) is a traditional surgical procedure for medial-type osteoarthritis of the knee. Recently, the procedure has evolved into a type of knee-preserving surgery. Minor correction HTO aims for a tibial correction angle of ≤15 degrees, a femorotibial angle (FTA) of 171 degrees, a medial tibial plateau angle of ≤90 degrees, and a...

Background and Objectives: Although previous reports have shown that early anterior cruciate ligament (ACL) reconstruction is associated with an increased risk of stiffness, recommendations for delayed surgery are based on outdated literature. The advent of arthroscopic surgery and accelerated rehabilitation protocols warrants a reexamination of th...

Purpose To investigate whether the pivot‐shift test reflects patient‐reported outcomes 1 year after anterior cruciate ligament (ACL) reconstruction based on a multicentre prospective cohort study. Methods This study included patients who underwent primary ACL reconstruction using the hamstring tendons. The pivot‐shift test grades were determined a...

The purpose of this study was to investigate factors that influence clinical outcomes after anterior cruciate ligament (ACL) reconstruction in patients aged ≥40 years. We studied 264 patients aged ≥40 and 154 patients aged ≤20 years who underwent ACL reconstruction at several surgical centers. A logistic regression analysis was conducted to identif...

Background: There are no studies examining changes in the physical function throughout the baseball season in Japanese professional players. We examined the range of motion (ROM) and muscle strength changes in professional baseball pitchers as the season progresses. Materials and methods: Five professional baseball pitchers were included. ROM, flex...

Background: This study aimed to investigate the location and distribution of pain in adults with chronic low back pain (LBP) with degenerative lumbar scoliosis (DLS) according to coronal deformities. Methods: We enrolled 100 adults with chronic LBP and DLS, dividing them into two groups, a right-convex DLS group (n = 50) and a left-convex DLS gr...

The pilot study aimed to determine whether the time from injury to surgery influences on postoperative knee biomechanics during walking in patients with anterior cruciate ligament reconstruction (ACLR). Thirty-two patients with unilateral ACLR (early, 10 patients; delayed, 22 patients) and 30 control subjects participated in this study. All examina...

Background: The Fosbury flop tear (FFT) has recently been described as a rotator cuff tear that has flipped upon itself and adhered medially. FFT is known to have a high retear rate after arthroscopic rotator cuff repair. The cause of the high postoperative retear rate after arthroscopic rotator cuff repair is believed to be due to the inability t...

Background: The purpose of this study was to assess the effect of posterior cruciate ligament resection under minimum medial collateral ligament release on the joint center gap, varus ligament balance, and the rotational change of the femur and tibia. Methods: This study included 75 knees with varus osteoarthritis that underwent total knee arthr...

Background Anterior shoulder instability is frequent among young athletes. Surgical treatment for this injury aims to facilitate an early return to sports (RTS). However, the rate of recurrent instability after surgery is reportedly high among young patients, and it is unclear whether surgery ensures satisfactory RTS. The purpose of this study was...

Objectives: Physical activity management through smartphone applications is increasing worldwide; however, it is unclear whether smartphone users among elderly Japanese individuals with musculoskeletal disorders are less likely to experience "locomotive syndrome" (LoS). We aimed to test the hypothesis that LoS in smartphone users had lower prevale...

Background Surgical planning of posterior referencing total knee arthroplasty (TKA) using computed tomography (CT) might lead to over-rotation of the femoral component because CT could not detect cartilage thickness of the posterior femoral condyle. The purpose of this study was to examine the rotational alignment difference of the femoral componen...

Background Little attention has been focused on risk factors for undergoing bilateral total knee arthroplasty (TKA) after primary unilateral TKA among patients with knee osteoarthritis (OA). This study investigated the differences in characteristics between groups with and without additional TKA for the contralateral knee among patients with knee O...

Background Motion analysis can be used to evaluate functional recovery after anterior cruciate ligament (ACL) reconstruction; however, the biomechanics parameters of the lower limb that are specifically altered in ACL-reconstructed knees compared to the contralateral side are not well understood. This retrospective study aimed to compare side-to-si...

Background This study aimed to compare the clinical outcomes and cuff integrity of the triple-row technique and suture-bridge technique in arthroscopic rotator cuff repair. Methods Among patients with more than two years of follow-up (mean 27.4 ± 7.2 months), 71 shoulders that underwent the triple-row technique (46 male and 25 female; mean age, 62...

Background Acromioclavicular joint ganglion cysts are rare lesions that mainly arise from the degeneration of the acromioclavicular joint in elderly patients. Although surgical management may be required because of their high recurrence rate after aspiration, few reports have described arthroscopic surgical procedures to treat acromioclavicular gan...

Context: Tennis is a noncontact sport playable at an individual's own pace. Thus, it is popular among the older adults. It is known that older adults often suffer from rotator cuff tears (RCTs), which may affect tennis activity. However, the prevalence and influence of RCTs on tennis play among older players are not well-known. This study aimed to...

Background Knee joint distraction (KJD) has received much attention as a joint preserving surgery, especially in young patients with advanced knee osteoarthritis (OA). Methods This study included 16 patients with advanced knee OA who underwent KJD combined with marrow stimulating techniques and were followed up for more than 2 years. The patients’...

Background Arthroscopic Bankart repair (ABR) yields good results in young athletes with anterior shoulder instability. However, the treatment for overhead athletes is challenging because recovery of range of motion is necessary for return to play and repeated shoulder motion may lead to recurrent instability. The aim of this study was to investigat...

PurposeThe objective of this study was to investigate factors that influence the prevalence of medial and lateral meniscal injuries at the time of anterior cruciate ligament (ACL) reconstruction in patients with ACL injuries.Methods Patients with ACL injuries at 9 institutions were enrolled in this multicentre study. Age, sex, duration between inju...

Articular cartilage has a poor healing capacity due to its lack of vessels, nerve supply, and isolation from systemic regulation, if cartilage injury is not diagnosed accurately or not treated properly, it gradually deteriorates by causing kissing cartilage lesions or degeneration of neighboring tissue, leading to secondary osteoarthritis. Even wit...

Background Medial meniscus extrusion (MME) leads to symptomatic knee osteoarthritis (OA) due to increased mechanical stress. MME increases with weight-bearing, and the difference in MME between non-weight-bearing and weight-bearing status (ΔMME) is a factor that causes greater MME. The lateral wedge insole (LWI) is an ideal approach for decreasing...

Background: Previous studies have indicated that the kinematics of the knee joint affect the trunk and pelvis during gait. However, the factors that influence trunk movement in knee osteoarthritis patients during gait after surgery remain unclear. Objective: To examine the effect of total knee arthroplasty (TKA) on trunk movement during gait by...

The purpose of this study was to clarify the relationship between knee biomechanics and clinical assessments in ACL deficient patients. Subjects included 22 patients with unilateral ACL rupture and 22 healthy controls. Knee kinematics and kinetics during walking and running were examined using a 3-dimensional motion analysis system. The passive kne...

Background Lateral thrust is known to be risk factors for knee osteoarthritis progression. Medial meniscus extrusion is also known to be risk factors for knee osteoarthritis progression; moreover, the amount of change in medial meniscus extrusion from non-weight bearing to weight bearing is an important factor for the progression of knee osteoarthr...

Aim Mesenchymal stem cells (MSCs) have several properties that may support their use as an early treatment option for osteoarthritis (OA). This study investigated the role of multiple injections of allogeneic bone marrow-derived stem cells (BMSCs) to alleviate the progression of osteoarthritic changes in the various structures of the mature rabbit...

Background Knee joint kinematics and kinetics during running recover at 12 months, not 6 months, following anterior cruciate ligament (ACL) reconstruction surgery. Knee muscle strength is a criterion used to assess an individual’s readiness to return-to-sports (RTS); however, the relationship between knee muscle strength and knee biomechanics is un...

Background: Lumbar alignment of posterior or anterior tilts affects the exacerbation and remission of symptoms of lumbar spinal stenosis patients. This study aimed to clarify the correlation between spinal and pelvic movements during gait and the aggravation of low back pain after gait loading in lumbar spinal stenosis patients. Methods: A total of...

Current treatment algorithms for stable juvenile osteochondritis dissecans (JOCD) of the knee have not been established. For arthroscopically stable lesion, in-situ arthroscopic fixation with bioabsorbable pins was introduced as a more desirable approach because of less surgical morbidity and faster recovery. However, there is a paucity of literatu...

Aims: To investigate the risk factors for progression of articular cartilage damage after anatomical anterior cruciate ligament (ACL) reconstruction. Patients and methods: A total of 174 patients who underwent second-look arthroscopic evaluation after anatomical ACL reconstruction were enrolled in this study. The graded condition of the articula...

Background: It is known that a lateral wedge insole (LWI) decreases medial loading stress in the knee. Medial meniscus pathology, such as a degenerative tear or a root tear, leading to malfunction and medial meniscus extrusion (MME), is a critical condition that leads to severe osteoarthritis (OA). However, the effect of LWI on MME is still unknow...

Background: The purpose of this study was to evaluate bone tunnel changes following anterior cruciate ligament (ACL) reconstruction during the early postoperative period using computed tomography (CT), and to understand the impact of postoperative immobilization on these changes. Methods: Twenty patients who underwent double-bundle ACL reconstru...

Background: The aim of our study was to evaluate the effects of gender on recovery of knee joint biomechanics over the stance phase of gait after reconstruction of the anterior cruciate ligament (ACL). Methods: Gait parameters and knee joint kinematics and kinetics were compared in 32 patients (16 male and 16 female) who underwent ACL reconstruc...

Habitual patellar dislocation is an uncommon condition. In this case, a patient demonstrated lateral patellar dislocation in the middle or terminal range of flexion. A functional correction of the patella was devised so that the fixation site of the autologous graft on the femur was able to stabilize the patella selectively during the middle or ter...

Remnants of ACL have been reported to promote recovery of proprioceptive functions in a graft, resulting in the technique of ACL augmentation becoming accepted widely. We recommend that ACL augmentation is performed in the following cases: ACL remnant retained as a thick ACL remnant bridged between the intercondylar notch and tibia, partial rupture...

Background: Osteochondritis dissecans (OCD) of the knee is a disorder in juveniles and young adults; however, its etiology still remains unclear. For OCD at the medial femoral condyle (MFC), it is sometimes observed that the lesion has a connection with fibers of the posterior cruciate ligament (PCL). Although this could be important information r...

Ten years after a meniscectomy of discoid lateral meniscus, a 19-year-old man presented a loose body in his right knee with limited range of motion. At the time of meniscectomy, a stable osteochondritis dissecans in the lateral femoral condyle with a T2 high area in MRI was recognized; however, the lesion was left without surgical treatment. We per...

Purpose: Gait kinematics and kinetics of the knee before and after medial patellofemoral ligament (MPFL) reconstruction in patients with recurrent lateral patellar dislocation (RPD) are unknown. The purpose of this study was to measure knee kinematics and kinetics during gait before and 1 year after anatomical MPFL reconstruction in patients with...

Patients with heart failure have limited exercise capacity due to not only the myocardial dysfunction but also skeletal muscle atrophy. However, the mechanisms and time course of protein degradation in skeletal muscle during heart failure remain unclear, and there is no established standard treatment. The purpose of the present study was to investi...

In total knee arthroplasty (TKA), dynamic knee loading may loosen the artificial joint and bone or cause polyethylene wear after prolonged use. TKA decreases knee adduction moment at 6 months, but this effect is lost by 1 year post-operatively. However, lateral thrust after TKA has not been clarified. We hypothesized that like knee adduction moment...

The present study investigated intra-articular injection of bone-marrow-derived mesenchymal stem cells (MSCs) combined with articulated joint distraction as treatment for osteochondral defects. Large osteochondral defects were created in the weight-bearing area of the medial femoral condyle in rabbit knees. Four weeks after defect creation, rabbits...

Symptomatic bipartite patella is rarely seen in athletic adolescents or young adults in daily clinical practice. To date, limited researches focused on the patellofemoral alignment have been reported. The current study revealed unique patellofemoral alignment in the patient with symptomatic bipartite patella. Twelve patients with 12 symptomatic bip...

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In revision anterior cruciate ligament reconstruction (ACLR), the single-stage technique and the over-the-top route (OTTR) procedure were usually selected for cases where the bone tunnel cannot be created at an anatomical position due to tunnel enlargement and overlap with the mal-positioned tunnel of primary reconstruction. The purpose of this stu...

Background: Posterior cruciate ligament (PCL) injuries are not rare in acute knee injuries, and several recent anatomical studies of the PCL and reconstructive surgical techniques have generated improved patient results. Now, we have evaluated PCL reconstructions performed by either the single-bundle or double-bundle technique in a patient group f...

Anatomical and biomechanical studies indicate that the medial patellofemoral ligament (MPFL) is the primary restraint to lateral patellar dislocation and displacement. The MPFL lies along the second layer of the medial side components and extends from the superior two-thirds of the patellar medial edge to the femoral insertion, providing 50–60 % of...

Purpose. The present study sought to determine the influences of single-bundle (SB), single-bundle augmentation (SBA), and double-bundle (DB) reconstructions on balance ability and proprioceptive function. Methods. 67 patients who underwent a single- or double-bundle ACL reconstruction or a SBA using multistranded autologous hamstring tendons were...

Use of mild hyperbaric oxygen less than 2 atmospheres absolute (2026.54 hPa) with normal air is emerging as a common complementary treatment for severe muscle injury. Although hyperbaric oxygen at over 2 atmospheres absolute with 100% O2 promotes healing of skeletal muscle injury, it is not clear whether mild hyperbaric oxygen is equally effective....

Purpose: In revision anterior cruciate ligament reconstruction (ACLR), the single-stage technique and the over-the-top route (OTTR) procedure were usually selected for cases where the bone tunnel cannot be created at an anatomical position due to tunnel enlargement and overlap with the mal-positioned tunnel of primary reconstruction. The purpose o...

Purpose: This study aimed to investigate the morphological patterns of remnant anterior cruciate ligament bundles after injury (ACL remnant) on three-dimensional computed tomography (3DCT) and compare them with those on arthroscopy. Methods: Sixty-three patients (33 males and 30 females; mean age 25.2 ± 10.1 years) who had undergone primary ACL...

We report the clinical outcome and findings at second-look arthroscopy of 216 patients (mean age 25 years (11 to 58)) who underwent anterior cruciate ligament (ACL) reconstruction or augmentation. There were 73 single-bundle ACL augmentations (44 female, 29 male), 82 double-bundle ACL reconstructions (35 female, 47 male), and 61 single-bundle ACL r...

In Japan, the super-aged society, the difference between the healthy life expectancy and life expectancy is large, it has become a social problem. For the extension of healthy life expectancy, measures to bone and joint disease are important. Lower limb muscle strengthening is useful to decrease in pain and improvement of walking ability. Further,...

Background In recent years, highly detailed evaluations have been performed using three-dimensional computed tomography (3D CT). Very small bony ridges, such as Resident's ridge and the lateral bifurcate ridge can be visualised by 3D CT. The purpose of this study was to ascertain whether Parsons' knob, which was recognised as the bony landmark of t...

Purpose: Most individuals with an isolated posterior cruciate ligament (PCL) injury do not complain of disability even if posterior instability is objectively revealed by a static physical examination, such as the posterior drawer test. This suggests it is insufficient to only evaluate posterior instability under static conditions. Therefore, we h...

Background: The purpose of this study was to evaluate the functional and radiographic outcome of fixation of unstable juvenile osteochondritis dissecans lesions of the knee after a minimum of 2 years of follow-up. Methods: A total of 33 unstable juvenile osteochondritis dissecans lesions in 30 patients underwent fixation using bioabsorbable pins...

Background No definite consensus has been reached regarding the optimal technique for graft fixation to the femur in an anterior cruciate ligament reconstruction. The purpose of this study was to evaluate the mechanical strength of two cortical suspension devices which were the TightRope (TR), a new adjustable-length loop device, and the EndoButton...

Introduction Posterior cruciate ligament (PCL) reconstruction using the remnant preserving technique may contribute to improved postoperative posterior stability, graft healing, and proprioception recovery. Although there have been several reports on remnant preserving PCL reconstruction, no study has yet evaluated the proprioceptive functions befo...

Introduction Posterior cruciate ligament (PCL) reconstruction using the remnant preserving technique may contribute to improve postoperative posterior stability, graft healing, and proprioception recovery. Although there have been several reports on remnant preserving PCL reconstruction, no study has yet evaluated the proprioceptive functions befor...

Background High tibial osteotomy (HTO) for medial knee osteoarthritis (OA) is mainly performed via two procedures: closed wedge HTO (CW) and opening wedge HTO (OW). In this study, differences between these procedures were assessed by serial clinical evaluation and gait analysis before and after surgery. Methods Twenty-one patients underwent HTO fo...

The current patients required high flexion total knee arthroplasty (TKA). We hypothesized the patients who would get the high rotational angle just after TKA could gain high flexion knee 1 year after TKA. Sixty-three patients (average age: 70.6 years) were examined. In order to examine between the intraoperative rotational angles and the gained fle...

The aims of the present controlled clinical study were to (1) compare patella laxity determined in the outpatient clinic with that in anaesthetized patients and (2) evaluate patella laxity before and after lateral release. The study evaluated data on 33 knees from 33 patients (average age 19.7 years) between 2007 and 2011. All patients were diagnos...

Patellar dislocation is relatively common, accounting for up to 16 % of acute knee trauma in young athletes with hemarthrosis [1]. The medial patellofemoral ligament (MPFL) is the primary medial soft-tissue restraint, preventing lateral displacement of the patella in the normal knee. MPFL also weighted 60 % to protect against lateral force [2]. Whe...

Medial patellofemoral ligament (MPFL) injury occurred when the patella dislocated laterally during sport activity and trauma. In the cadaver study, MPFL weighted 60 % to protect lateral force [1], and the MPFL is injured in more than 90 % of patellar dislocation [2]. Thus, MPFL function is one of most important factors in patellar stability.

Aim: Until recently, only fibrin glue has been available for clinical usage to repair articular cartilage, although its adhesiveness is not strong enough for use with articular cartilage, and it is derived from human blood and thus carries the risk of contamination. Recently, LYDEX, a new biodegradable hydrogel glue, has come onto the market. The...

The aim of this study was to ascertain the ideal far anteromedial portal location to avoid damaging the medial femoral condyle in anterior cruciate ligament (ACL) reconstruction. Forty patients received preoperative computed tomography (CT) scans at 120° of knee flexion. Three-dimensional CT (3D CT) reconstruction of the knee was performed using vo...

Purpose The purposes of this study were to evaluate early- to midterm clinical results after implantation of tissue-engineered cartilage-like tissue for the treatment for full-thickness cartilage defects of the knee and to identify the factors affecting the final clinical results. Methods Tissue-engineered cartilage-like tissue was prepared by cult...

Background: Cell therapies are hampered by the difficulty of delivering cells to and retaining them in target tissues long enough to repair or regenerate local tissues. Hypothesis: Magnetic-assisted delivery of magnetically labeled mesenchymal stem cells (m-MSCs) would be rapid, allowing for chondrogenic differentiation and functional joint repa...

Background: It is difficult for an articular cartilage injury to repair spontaneously. There are many procedures for treating cartilage injury, however there is no standard procedure for middle-aged patients who have diffuse knee osteoarthritis, especially of the lateral compartment. Therefore, Ochi developed a new distraction device that uses mag...

Skeletal muscle injuries often leave lasting functional damage or pain. Muscle injuries are routinely treated conservatively, but the most effective treatment to promote the repair of injured muscles has not yet been established. Our previous report demonstrated that human peripheral blood-derived CD133+ cell transplantation to rat skeletal muscle...

Anatomical and biomechanical studies indicate that the medial patellofemoral ligament (MPFL) is the primary restraint to lateral patellar dislocation and displacement. The MPFL lies along the second layer of the medial side components and extends from the superior two-thirds of the patellar medial edge to the femoral insertion, providing 50–60 % of...

Purpose: To identify the relationship between knee flexion angle and femoral tunnel length, as well as the exit points of guidewires, when using a far anteromedial portal technique for posterolateral femoral tunnel drilling in double-bundle anterior cruciate ligament reconstruction. Methods: Using the far anteromedial portal technique in 8 cadav...

Recent magnetic resonance imaging (MRI) and three-dimensional (3D) computed tomography (CT) analyses have demonstrated that semitendinosus tendon can regenerate at a high rate following harvesting the tendon for anterior cruciate ligament (ACL) reconstruction. Although it is known that the regeneration of the semitendinosus tendon does not occur in...

Recent magnetic resonance imaging (MRI) and three-dimensional (3D) computed tomography (CT) analyses have demonstrated that semitendinosus tendon can regenerate at a high rate following harvesting the tendon for anterior cruciate ligament (ACL) reconstruction. Although it is known that the regeneration of the semitendinosus tendon does not occur in...