Kissing Lesion Research Articles

Mid- to Long-Term Outcomes After Medial Open-Wedge High Tibial Osteotomy in Patients With Radiological Kissing Lesion.

Background:Although medial open-wedge high tibial osteotomy (MOWHTO) is the treatment of choice for patients with mild to moderate osteoarthritis with varus malalignment, concerns about inferior outcomes in patients with preoperative radiological kissing lesion (RKL) remain.Purpose:To compare the mid- to long-term clinical and radiological results and survivorship after MOWHTO in patients with versus without preoperative RKL.Study Design:Cohort study; Level of evidence, 3.Methods:Included were 122 knees in patients who underwent MOWHTO with a medial locked plate and had minimum 5-year follow-up data. The mean age at surgery was 55.9 years (range, 38-65 years), and the mean follow-up was 7.5 years (range, 5-12.8 years). All patients had undergone second-look arthroscopy around 2 years after MOWHTO. The knees were divided into an RKL group (n = 17) and no-RKL group (n = 105) based on preoperative standing radiographs. The authors compared postoperative American Knee Society (AKS) knee and function scores, range of motion, and improvements in AKS scores between groups, as well as hip-knee-ankle angle, medial proximal tibial angle, and joint-line convergence angle from preoperatively to postoperatively. Also compared were the degree of cartilage regeneration between first- and second-look arthroscopy and the survival rate after index surgery.Results:Preoperative AKS scores were significantly lower in the RKL group versus the no-RKL group (AKS knee, 79.6 ± 7.5 vs 83.8 ± 3.9, P = .037; AKS function, 68.8 ± 9.3 vs 76.0 ± 5.1, P = .006). Likewise, postoperative AKS scores were significantly lower in the RKL group versus the no-RKL group (AKS knee: 91.3 ± 4.2 vs 94.4 ± 1.6, respectively, P = .008; AKS function: 90.0 ± 10.0 vs 97.6 ± 4.5, respectively, P = .007). However, all patients had excellent postoperative AKS knee and function scores (>80). Moreover, there were no between-group differences in pre- to postoperative improvement in AKS scores, postoperative radiological changes, or grade of cartilage regeneration. The survival rates in the RKL and no-RKL groups were 100% and 97.1%, respectively (P ≥ .999).Conclusion:Although the latest clinical scores were lower in the RKL group than in the no-RKL group, comparable results in postoperative clinical improvement, cartilage regeneration, and survivorship were observed in patients with RKL at mid- to long-term follow-up.

Mesenchymal Stem Cell Implantation in Knee Osteoarthritis: Midterm Outcomes and Survival Analysis in 467 Patients.

Background:A cell-based tissue engineering approach that uses mesenchymal stem cells (MSCs) has addressed the issue of articular cartilage repair in knees with osteoarthritis (OA).Purpose:To evaluate the midterm outcomes, analyze the survival rates, and identify the factors affecting the survival rate of MSC implantation to treat knee OA.Study Design:Case series; Level of evidence, 4.Methods:We retrospectively evaluated 467 patients (483 knees) who underwent MSC implantation on a fibrin glue scaffold for knee OA with a minimum 5-year follow-up. Clinical outcomes were determined based on the International Knee Documentation Committee (IKDC) and Tegner activity scale results measured preoperatively and during follow-up. Standard radiographs were evaluated using Kellgren-Lawrence grading. Statistical analyses were performed to determine the survival rate and the effect of different factors on the clinical outcomes.Results:The mean IKDC scores (baseline, 39.2 ± 7.2; 1 year, 66.6 ± 9.6; 3 years, 67.2 ± 9.9; 5 years, 66.1 ± 9.7; 9 years, 62.8 ± 8.5) and Tegner scores (baseline, 2.3 ± 1.0; 1 year, 3.4 ± 0.9; 3 years, 3.5 ± 0.9; 5 years, 3.4 ± 0.9; 9 years, 3.2 ± 0.9) were significantly improved until 3 years postoperatively and gradually decreased from 3- to 9-year follow-up (P < .05 for all, except for Tegner score at 5 years vs 1 year [P = .237]). Gradual deterioration of radiological outcomes according to the Kellgren-Lawrence grade was found during follow-up. Survival rates based on either a decrease in IKDC or an advancement of radiographic OA with Kellgren-Lawrence scores were 99.8%, 94.5%, and 74.5% at 5, 7, and 9 years, respectively. Based on multivariate analyses, older age and the presence of bipolar kissing lesion were associated with significantly worse outcomes (P = .002 and .013, respectively), and a larger number of MSCs was associated with significantly better outcomes (P < .001) after MSC implantation.Conclusion:MSC implantation provided encouraging outcomes with acceptable duration of symptom relief at midterm follow-up in patients with early knee OA. Patient age, presence of bipolar kissing lesion, and number of MSCs were independent factors associated with failure of MSC implantation.

Chondral Defects Cause Kissing Lesions in a Porcine Model.

To assess the development of kissing lesions 12 months after the generation of full-thickness chondral defects. Eight minipigs were randomized into 2 groups: the Φ8.5 mm full-thickness chondral defect group (8.5FT group) and the Φ6.5 mm full-thickness chondral defect group (6.5FT group). The Φ8.5 mm or Φ6.5 mm full-thickness chondral defects were prepared in the medial femoral condyle. Knee magnetic resonance imaging (MRI) was performed before sacrifice. India ink staining was performed to macroscopically assess kissing lesions. Histologic staining (hematoxylin-eosin [HE], safranin O/fast green, toluidine blue staining) and immunohistochemistry (collagen I, collagen II, collagen X, MMP-3) were performed. Microcomputed tomography analysis was completed to assess subchondral bone alterations. Obvious kissing lesions were observed on the tibial plateau. Knee MRI demonstrated high cartilage signal intensity in the medial femoral condyle and opposite tibial plateau. HE staining demonstrated cartilage fibrillation and prominent cell death. The depletion of safranin O, toluidine blue staining, and collagen II was observed in the kissing lesion areas. The kissing lesion areas demonstrated increased collagen I, Collagen X, and MMP-3 expression. The 8.5FT group showed a significantly lower mean trabecular number (2.80 1/mm) than the control group (3.26 1/mm). The 6.5FT group showed a significantly increased mean trabecular thickness (0.54 mm) and a decreased mean trabecular number (2.71 1/mm) compared to the control group (0.32 mm; 3.26 1/mm). Obvious kissing lesions were observed on the tibial plateau. Knee MRI demonstrated high cartilage signal The presented findings support the development of kissing lesions caused by full-thickness chondral defects.

A concurrent kissing lesion of palate: A case report

A concurrent kissing lesion of palate: A case report

Supramalleolar osteotomy and AMIC cartilage reconstruction in severe cartilage lesion

Category: Ankle Introduction/Purpose: Severve cartilage lesion is defined by the author as: Cartilage substantial deterioration of the subchondral bone Kissing lesion, tibial and talar lesion. Gross cystic lesion Cartilage damage greater than 1/3 of the talar dome or the tibial platform Slerotic changes of the subchondral bone plate in arthritic cases in severe hindfoot varus or valgus alignment. This paper shows in a case series, exceptional cartilage lesions with the above mentioned pathological changes. The indications, strategies for osteotomies and the treatment strategies in malaligned bipolar, cystic and gross cartilage lesions is explained. Methods: 35 patients with severe circumscript varus / valgus arthritis have been operated by supramalleolar osteotomy (SMOT), 11 of them with (tibial &amp; talar “kissing”) lesions. 70 patients presented bipolar (tibial &amp; talar “kissing”) lesions with correct hindfoot axis. 18 patients had a gross cystic lesion and were additionally treated with filling of the cysts. 2 of them had a “kissing lesion”. Results: All patients received an AMIC procedure (hyaluronic matrix, Hyalofast©) for cartilage reconstruction. The biological healing support was in all cases bone marrow aspirate and ACP© growth factors. The subchondral bone plate was treated aggressively was a power raps or burr according to L. Johnson technique The importance of a supramalleolar and calcaneous osteotomy in a hindfoot malalignment (varus / valgus) as a treatment key aspect for load transfer is elaborated. Planned early implant removal with revision und biological boosting of the cartilage regeneration is a further cornerstone of the treatment. Followup were evaluated by FAOS score Conclusion: This cases series have shown the possibilities for a successfull managing of this severe lesions and offers also its limit in the over all results.

Arthroscopic Treatment of Focal Osteochondral Lesions of the First Metatarsophalangeal Joint

Background:This study aimed to assess the arthroscopic treatment, one of the surgical treatment options, for early grade focal osteochondral lesions of the first MTP joint, and to determine the impact of the arthroscopic microdrill hole surgery on foot function and daily life in a patient group with failed conservative treatment.Materials-Methods:This prospective study reviewed 27 patients having hallux rigidus with osteochondral injury of the first MTP joint who were operated with first MTP joint arthroscopy. Six patients had Coughlin-Shurnas grade 4 hallux rigidus and were excluded from the study; 5 patients were excluded due to having an arthroscopic kissing lesion, and 3 patients were excluded for not having attended regular follow-up after third month. After excluding the above patients, the study was completed with 14 patientsResults:The mean hallux vagus angle was 13.29⁰ (±1.93 SD) and the mean intermetatarsal angle was 9.14⁰ (±0.86 SD). Apart from joint arthroscopy, no soft tissue procedure and/or any procedure requiring osteotomy was intended in any patient. The median operative duration was 27.8 (19-56) minutes.The patients had mean preoperative VPS and AOFAS-Hallux scores of 8.14±0.86 SD and 48.64±4.27, respectively; the corresponding postoperative values of both scores were 1.86±0.66 SD and 87.00±3.70. Both VPS and AOFAS-Hallux scores changed significantly (p<0.01)Discussion:In this prospective study we explored the impact of arthroscopic microdrill hole surgery on foot functions and daily life activities in patients with focal osteochondral lesions of the first MTP joint. Our results indicated significant improvements in VAS and AOFAS scores with this treatment. The micro drill technique we applied in this study is based on the principle of opening 4-6-mm long tunnels to enable stem cells to migrate to the defected area and achieve cure by differentiation in full-thickness chondral injuries with exposed subchondral bone.In conclusion, arthroscopic microhole drill technique can be applied with impressive functional scores and without any complication in persons who failed conservative therapy for hallux rigidus with focal chordal injury, a common foot problem. There is a need for comparative studies with long follow-up period in this field.

Functional and MRI outcomes after arthroscopic microfracture for treatment of osteochondral lesions of the distal tibial plafond.

Osteochondral lesions of the distal tibial plafond are uncommon compared with talar lesions. The objective of this study was to assess functional and magnetic resonance imaging (MRI) outcomes following microfracture for tibial osteochondral lesions. Thirty-one tibial osteochondral lesions in thirty-one ankles underwent arthroscopic microfracture. The Foot and Ankle Outcome Score (FAOS) and Short Form-12 (SF-12) general health questionnaire were used to obtain patient-reported functional outcome scores preoperatively and postoperatively. MRI scans were assessed postoperatively with use of the Magnetic Resonance Observation of Cartilage Repair Tissue (MOCART) score for twenty-three ankles. The average age was thirty-seven years (range, fifteen to sixty-eight years), and the average lesion area was 38 mm(2) (range, 7.1 to 113 mm(2)). Twelve ankles had a kissing lesion on the opposing surface of the talus, and two ankles had a concomitant osteochondral lesion elsewhere on the talus. FAOS and SF-12 scores were significantly improved (p < 0.01) at the time of follow-up, at an average of forty-four months. The average postoperative MOCART score was 69.4 (range, 10 to 95), with a lower score in the ankles with kissing lesions (62.8) than in the ankles with an isolated lesion (73.6). Increasing age negatively impacted improvement in SF-12 (p < 0.01) and MOCART (p = 0.04) scores. Increasing lesion area was negatively correlated with MOCART scores (p = 0.04) but was not associated with FAOS or SF-12 scores. Lesion location and the presence of kissing lesions showed no association with functional or MRI outcomes. Arthroscopic microfracture provided functional improvements, but the optimal treatment strategy for tibial osteochondral lesions remains unclear. The repair tissue assessed on MRI was inferior to normal hyaline cartilage. The MRI outcomes appeared to deteriorate with increasing lesion area, and both functional and MRI outcomes appeared to deteriorate with increasing age. Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Mittelfristige klinische und radiologische Ergebnisse nach autologer osteochondraler Transplantation unter Berücksichtigung der Lebensqualität

Treatment of full-thickness cartilage defects remains a challenge in musculoskeletal surgery. Autologous osteochondral transplantation represents a possible solution for the repair of affected areas. However, some problems like degenerative changes of the transplanted cylinders and the surrounding cartilage or lack of cylinder integration to the surrounding cartilage arise with this method. Thus mid-term results respecting the quality of life are useful for assessment of the method. We investigated 22 patients with a mean follow-up of 88 ± 14.5 months after autologous osteochondral transplantation due to a full-thickness cartilage defect of the medial femoral condyle. Beside clinical scores we assessed at follow-up the quality of life using the SF-36 health survey and the EQ-5D. Furthermore, radiological changes were detected and MRI was performed in 21 patients. A control group of 19 patients, treated with microfracture, was matched in terms of BMI, gender and age. Exclusion criteria for this group were tibial kissing lesion, ligament instability, arthrosis and malalignment. In a longitudinal comparison with results 13.5 months after operation, no difference in Lysholm score was found. In plain radiographs higher degrees of arthritic changes in the medial compartment compared to the unaffected knee were observed. MRI revealed a mean modified MOCART score of 41.2 ± 7.7 for the OAT group and of 39.4 ± 16.1 for the microfracture group, without being significant. For OAT patients all cylinders showed an osseous integration. However, cylinder oedema was found in 9 patients. Those patients had a higher intensity of pain on a visual analogue scale. Quality of life was better for OAT patients in the physical scale of SF-36, but not in the mental scale. Autologous osteochondral transplantation has an unaltered significance in treating full-thickness cartilage defects and leads to satisfying mid-term results. The development of early arthritic changes might not be preventable by this method. Oedema of the transplanted cylinders is attended by higher pain intensity and might be an indirect sign of cartilage degeneration.

Arthroscopic Analysis of the Radiologic Abnormalities of the Hip Associated with Anterior Femoroacetabular Impingement

� Purpose: We wanted to arthroscopically analyze the femoral osseous abnormalities (bumps) in hips with anterior femoroacetabular impingement (FAI) and the other radiologic abnormalities of the hip joint associated with this. Materials and Methods: We retrospectively reviewed the radiographs of 45 patients (51 hips) who underwent arthroscopic treatment under the impression of FAI from January to August, 2008. The indications for surgery included persistent hip pain, the absence of advanced osteoarthritis, physical examination or MRA findings consistent with an acetabualr labral tear. Preoperative and postoperative plain radiographs (pelvis AP, frog-leg lateral, cross table lateral and the false profile view) were taken. As the occasion demanded, 3D-CT or MRA were performed. Results: For the radiologic findings, a decreased head-neck offset (<8 mm) was seen in 15 hips. Femoral bumps were seen in 26 hips and among them, 11 hips were associated with acetabular retroversion, 5 hips were associated with a prominent acetabular rim and 13 hips were located on the flattening of the neck due to a decreased offset. Pistol grip deformity was found in 21 hips and acetabular retroversion was done in 32 hips. Regarding the secondary changes, spurs on the acetabulum of the femur were found in 14 hips and femoral bony cysts were found in 23 hips. Arthroscopically, all the hips had acetabular degenerative labral tear and the acetabular cartilage was injured in 32 hips (62.7%). Among them, 25 hips underwent acetabular retroversion. Conclusion: Femoral osseous abnormalities are seen in various locations and these abnormalities have various shapes. A considerable number were associated with pincer impingement and they could produce a 'kissing lesion' between the acetabulum and femur. Identification of these abnormalities on radiographs aids confirming FAI in hips with symptomatic early osteoarthritis.

Treatment of deep cartilage defects of the ankle with matrix-induced autologous chondrocyte implantation (MACI)

Matrix-induced Autologous Chondrocyte Implantation (MACI) was used for the treatment of six deep chondral defects of the ankle. In five cases the site of the lesion was the talar dome, while the sixth patient presented a kissing lesion. The mean size of the lesion was 3.4 cm 2 . Follow up averaged 33.8 months. AOFAS score was used for clinical-functional evaluation. The evolution of the implant was studied by MRI at 6, 12 and 24 months. With the exception of the patient with the kissing lesion, an improvement in the clinical-functional status and the presence of hyaline-like cartilage signal was observed in the treated ankles. All the patients underwent a second arthroscopic look at the time of malleolar screw removal: only in the ankle with the kissing lesion there was no evidence of repairing tissue. In our experience, MACI appears a reliable method for the treatment of chondral defects of the ankle.