Objective To compare effectiveness of injecting platelet-rich plasma (PRP) with different concentrations of leukocytes under ultrasound in treatment of supraspinatus tendon injury. Methods A clinical data of 30 patients with supraspinatus tendon injury, who met the selection criteria and were admitted between December 2022 and December 2023, was retrospectively analyzed. Thirty patients were treated with 4 injections of leukocyte-poor PRP (LP-PRP, n=10), leukocyte-rich PRP (LR-PRP, n=11), and triamcinolone (n=9), with an interval of 7-10 days between each injection. There was no significant difference between groups (P>0.05) in the age, gender, disease duration, affected shoulder side, Ellman classification, preoperative visual analogue scale (VAS) score, Constant score, Disabilities of the Arm, Shoulder, and Hand (DASH) score, and American Shoulder and Elbow Surgeons (ASES) score. At 1, 3, and 6 months after injection, the shoulder pain and function were evaluated by using the VAS score, Constant score, DASH score, and ASES score. MRI was conducted to observe supraspinatus tendon healing. Results No severe adverse reactions was observed in all groups. All patients were followed up 6-7 months, with an average of 6.5 months. After injection, the ASES score and Constant score gradually increased in the LR-PRP group and LP-PRP group, while the VAS score and DASH score decreased, with significant differences compared to before injection (P<0.05). Except for no significant difference between 3 and 6 months after injection in LR-PRP group (P>0.05), the above scores showed significant differences between different time points (P<0.05). At 1 month after injection, the Constant score in triamcinolone group significantly increased compared to before injection, while the VAS score significantly decreased (P<0.05). There was no significant difference in all scores between other time points in the triamcinolone group (P>0.05). Except for 1 month after injection, there was no significant difference in Constant score and VAS score between groups (P>0.05). At all other time points, the LR-PRP group and LP-PRP group had better scores than the triamcinolone group (P<0.05). There was no significant difference between the LR-PRP group and the LP-PRP group (P>0.05). MRI showed that only 4 patients in the LP-PRP group had signs of repair at the supraspinatus tendon injury site at 6 months after injection, while no significant tendon repair sign was observed in the other patients. Conclusion Compared with triamcinolone treatment, multiple injections of LP-PRP and LR-PRP under ultrasound can promote the recovery of shoulder joint function and significantly relieve pain in patients with supraspinatus tendon injury, and imaging improvement can be seen after LP-PRP treatment.
Objective To investigate the effect of autologous osteochondral tissue and periosteum transplantation on tendon-bone healing of rotator cuff in rabbits. Methods Twenty-four male New Zealand white rabbits were randomly divided into autologous osteochondral tissue and periosteum transplantation group (experimental group, n=12) and simple suture group (control group, n=12). Both groups were subjected to acute supraspinatus tendon injury and repaired with corresponding techniques. At 4, 8, and 12 weeks after operation, 4 specimens from each group were taken from the right shoulder joint for histological examination (HE staining, Masson staining, and Safranin O-fast green staining), and the left shoulder was subjected to biomechanical tests (maximum tensile load and stiffness). Results Both groups of animals survived until the completion of the experiment after operation. At 4 weeks after operation, both groups showed less collagen fibers and disorder at the tendon-bone junction. At 8 weeks, both groups showed reduced inflammation at the tendon-bone junction, with more organized and denser collagen fibers and chondrocytes. The experimental group showed better results than the control group. At 12 weeks, the experimental group showed typical tendon-bone transition structure, with increased generation of collagen fibers and chondrocytes, and the larger cartilage staining area. Both groups showed an increase in maximum tensile load and stiffness over time (P<0.05). The stiffness at 4 weeks and the maximum tensile load at 4, 8, and 12 weeks in the experimental group were superior to control group, and the differences were significant (P<0.05). There was no significant difference in stiffness at 8, 12 weeks between the two groups (P>0.05). Conclusion Autologous osteochondral tissue and periosteum transplantation can effectively promote the fiber and cartilage regeneration at the tendon-bone junction of rotator cuff and improve the biomechanical effect of shoulder joint in rabbits.
ObjectiveTo summarize the research progress of interfacial tissue engineering in rotator cuff repair.MethodsThe recent literature at home and abroad concerning interfacial tissue engineering in rotator cuff repair was analysed and summarized.ResultsInterfacial tissue engineering is to reconstruct complex and hierarchical interfacial tissues through a variety of methods to repair or regenerate damaged joints of different tissues. Interfacial tissue engineering in rotator cuff repair mainly includes seed cells, growth factors, biomaterials, oxygen concentration, and mechanical stimulation.ConclusionThe best strategy for rotator cuff healing and regeneration requires not only the use of biomaterials with gradient changes, but also the combination of seed cells, growth factors, and specific culture conditions (such as oxygen concentration and mechanical stimulation). However, the clinical transformation of the relevant treatment is still a very slow process.
Objective?To analyze the effect of different surgery techniques on the tendon-bone healing of rotator cuff insertion.?Methods?Forty-two adult Japanese rabbits, weighing 2.0-2.5 kg and male or female, were selected. Thirty-six rabbits were given a sharply left-lateral tenotomy of the supraspinatus tendon with subsequent re-attachment of the tendon. According to the depth of re-attachment, 36 rabbits were equally randomized into the cancellous-fixation group (a cancellous bed was prepared with a dental burr) and the cortical-fixation group (the same treatment was performed except the preparation of the bone bed). Six rabbits served as the controls without treatment (control group). At 4 and 8 weeks after operation, the general observation, HE staining, and the biomechanical test were performed.?Results?At 4 weeks after operation, the supraspinatus-humerus specimens morphologically showed atrophy and vague between tendon and new bone in the cancellous-fixation group and the cortical-fixation group; at 8 weeks, no obvious difference was observed between 2 groups and the control group. The histological results of the cortical-fixation group at 4 weeks revealed the interface between tendon and new bone became smooth. The interface became transitional at 8 weeks, and the shape of bone tissue was nearly normal. The interface obtained from the cancellous-fixation group at 4 weeks became sclerotic, and collagen fibers formed in disorder. With ingrowth of new bone and re-establishment of collagen-fiber continuity at 8 weeks, thickness of interface became thin, and bone tissue was remodeling. The ultimate load were significantly higher in the cortical-fixation group than in the cancellous-fixation group at both 4 and 8 weeks, and the results gained at 8 weeks is significantly higher than that at 4 weeks in each group (P lt; 0.05). Except rupture strength at 4 weeks between 2 groups and all tensile strength (P gt; 0.05), there were significant differences in the results of others (P lt; 0.05).?Conclusion?In this model, the tendon-bone healing process and the biomechanical properties of cortical-fixation is superior to those of cancellous-fixation.
ObjectiveTo explorethe method and effectivenessofarthroscopically assisted treatmentof rotator cuff injury. MethodsBetween November 2009 and March 2011, 27 patients with rotator cuff injury were treated. There were 17 males and 10 females with a mean age of 43.6 years (range, 29-66 years). The disease duration was1 to 36 months (mean, 27months). The location was theleft shoulder in 11 cases and theright shoulder in 16 cases. Of them, 12 cases had a history of trauma and 15 caseshad no obvious predisposing causes. All patients had limitation of shoulder flexionandabduction. Anteroposterior and lateral X-ray films of the shoulder and the out-let X-ray films of the supraspinous muscle were taken. According to the acromion classification of Bigliani, there were 5 cases of type I, 13 cases of type II, and 9 cases of type III. MRI images showed all patients had rupture of the rotator cuff. The examination of shoulder arthroscope showed complete rupture of the supraspinatus muscle in 27 cases and acromion impingement in 23 cases. The patients without impingement underwent tear debridement, and the patients with impingement underwent acromioplasty and resection of subacromial bursa after tear debridement. The 3-4 cm incision was made with arthroscopically assisted positioning, and the metal suture anchorwas placed on the greater tubercle of humerus to repair rotator cuff. ResultsAll incisions healed primarily. All patients were followed up 13-27 months (mean, 19 months). No infection, loosening of internal fixation, and rotator cuffre-tearoccurred. Pain was relieved and the results was satisfactory after operation. The shoulder range of motion (ROM) at last follow-up was significantly improved when compared with preoperative ROM (P lt; 0.05). The visual analogue scale (VAS) score was significantly improved from 8.0 ± 1.8 at preoperation to 1.6 ± 0.7 at 2 weeks after operation and 0.8 ± 0.7 at last follow-up (Plt; 0.05); the University of California Los Angeles (UCLA) score of shoulder was significantly increased from 18.8 ± 6.6 at preoperation to 32.2 ± 3.3at 3months after operation and 33.6 ± 2.1 at last follow-up (P lt; 0.05). Conclusion The effectivenessofarthroscopically assisted treatmentof rotator cuff injury is satisfactory. However, long-termeffectiveness needs furtherfollow-up observation.
Objectives To compare the clinical therapeutic effect of arthroscope and mini-open in treating rotator cuff impairment with Meta-analysi. Methods We searched the Cochrane Bone, Joint and Muscle Trauma Group Specialised Register (Jun 2007), the Cochrane Central Register of Controlled Trials (The Cochrane Library Issue 2, 2007), MEDLINE, EMBASE, and CBM, conference proceedings and reference lists of articles. Selection criteria: Randomized or comparative studies on all arthroscopic rotator cuff repairs and mini-open repairs. Results There were no randomized controlled trials (Level I) was found. Pooled results from all 12 trials showed that postoperative shoulder pain in all arthroscope group was statistically less than in the mini-open group (RR=0.94, 95%CI 0.28 to 1.60). Meanwhile, another evaluates outcomes such as ROM-Forward flexion (RR=0.17, 95%CI –0.10 to 0.45), patient’s satisfaction (RR=1.03, 95%CI 0.98 to 1.08), complication (RR=1.11, 95%CI 0.54 to 2.27), and shoulder functional score (RR=0.04, 95%CI –0.10 to 0.19) indicated no statistical difference in two groups. Conclusions According to Limited evidence, there are some findings as follows: comparing with mini-open treatment of rotator cuff impairment, all arthroscopic surgery can reduce the shoulder pain. Moreover, we found no statistical difference in shoulder functional score, ROM-Forward flexion, patient’s satisfaction and complication. Attention should be paid to outcome assessment in future trials.
ObjectiveTo investigate the feasibility and effectiveness of “tail compression fixation+suture bridge” technology under shoulder arthroscopy for treating primary tear in medial enthesis of rotator cuff. Methods The clinical data of 11 patients with primary tear in medial enthesis of rotator cuff who met the selection criteria between October 2020 and October 2022 were retrospectively analyzed, including 3 males and 8 females, aged 39-79 years, with an average of 61.0 years. Rotator cuff injury was caused by traumatic fall in 8 cases, and the time from injury to admission was 1-4 months, with an average of 2.0 months; the remaining 3 cases had no obvious inducement. The active range of motion of the affected shoulder was limited, with an active forward flexion range of motion of (64.1±10.9)°, abduction of (78.1±6.4)°, internal rotation of (48.2±6.6)°, and external rotation of (41.8±10.5)°; 5 cases had shoulder stiffness. The preoperative visual analogue scale (VAS) score was 7.8±0.8 and the American Society of Shoulder and Elbow Surgeons (ASES) score was 23.9±6.4. The patients were treated with “tail compression fixation+suture bridge” technology under shoulder arthroscopy, and the pain and functional recovery were evaluated by VAS score, ASES score, and active range of motion of shoulder joint at last follow-up; MRI was performed after operation, and the integrity of rotator cuff was evaluated by Sugaya classification system. Results All the 11 patients were followed up 2-22 months, with an average of 13.5 months. All incisions healed by first intention, and there was no complication such as infection, rotator cuff re-tear, and anchor falling off. At last follow-up, the VAS score was 0.8±0.7 and the ASES score was 93.5±4.2, which significantly improved when compared with those before operation (P<0.05). All 11 patients had no significant swelling in the shoulders, and the active range of motion was (165.1±8.8)° in flexion, (75.3±8.4)° in abduction, (56.6±5.5)° in internal rotation, and (51.8±4.0)° in external rotation, which significantly improved when compared with those before operation (P<0.05). Shoulder MRI showed adequate tendon thickness and good continuity in 9 cases, including 4 cases with partial high signal area; and 2 cases with inadequate tendon thickness but high continuity and partial high signal area. According to Sugaya classification system, there were 4 cases of type 1 (36.4%), 5 cases of type 2 (45.5%), and 2 cases of type 3 (18.1%).Conclusion For the patients with primary tear in medial enthesis of rotator cuff, the “tail compression fixation+suture bridge” technology under shoulder arthroscopy is simple and effective.
Objective To investigate the effectiveness of arthroscopic double fixation and enhanced suture of long head of biceps tendon (LHBT) in situ for repairing rotator cuff tear. Methods A retrospective analysis was conducted on 31 patients with rotator cuff tears and LHBT injuries admitted between June 2022 and November 2023. All patients underwent arthroscopic double fixation and enhanced suture of LHBT in situ. There were 12 males and 19 females, with an average age of 61.6 years (range, 53-76 years). There were 10 cases of acute injury and 21 cases of chronic injury. According to DeOrio and Cofield classification criteria, the degree of rotator cuff tear rated as medium-sized tears in 3 cases, large tears in 12 cases, and massive tears in 16 cases. Associated injuries included 5 cases of shoulder joint adhesions, 12 cases of subscapularis muscle tears, and 31 case of shoulder impingement syndromes. The shoulder range of motion (ROM) (forward flexion, abduction, lateral external rotation, lateral internal rotation) and pain/function scores [visual analogue scale (VAS) score, University of California Los Angeles (UCLA) shoulder score, Constant-Murley score] were recorded before operation and at last follow-up. MRI at last follow-up were taken to evaluate the rotator cuff healing and structural integrity. Results All 31 surgeries were successfully completed with operation time ranging from 90 to 210 minutes (mean, 144 minutes). The 3-5 anchors (mean, 3.8 anchors) were used during operation. All incisions healed by first intention. All patients were followed up 12-29 months (mean, 18.5 months). At 3 months after operation, 2 cases developed joint adhesions, 3 had internal rotation limitations, and 2 experienced residual pain at the intertubercular groove, all resolved with conservative management. No Popeye deformity occurred during follow-up. At last follow-up, shoulder ROM (forward flexion, abduction, lateral external rotation, lateral internal rotation) and pain/function scores (VAS, UCLA, and Constant-Murley scores) showed significant improvements compared to preoperative values (P<0.05). At last follow-up, MRI evaluation showed that the rotator cuff healing rate reached 90.3% according to the Sugaya classification criteria. LHBT exhibited normal morphology, course, and continuity without dislocation. Surrounding synovial sheath showed no thickening or effusion. Conclusion Arthroscopic double fixation and enhanced suture of LHBT in situ for repairing rotator cuff tear can significantly reduce shoulder joint pain, improve ROM, and achieve a high rotator cuff healing rate.
Objective To compare the analgesic efficiency and safety of subacromial bursa continued ropivacaine analgesia with patient-controlled intravenous analgesia for arthroscopic rotator cuff repair. Methods A total of 64 patients undergoing rotator cuff repair surgery between October 2013 and February 2015 were randomly divided into the subacromial bursa group (JFX group, 32 cases) and the patient-controlled intravenous analgesia group (JM group, 32 cases). At the end of surgery, a catheter was inserted into the subacromial bursa of the patients in JFX group under arthroscopic visualisation and fixed properly, and analgesia pump was connected after surgery; in JM group, analgesia pump was connected to the vein channel after surgery. The pain Visual Analogue Scale (VAS) (motion and rest) scores 1 hour and 12, 24, 48, 72 hours after surgery, adverse reactions, use of analgesic pump, number of additional analgesia and patients satisfaction were recorded. Results There were no differences between the two groups in the number of additional analgesia, patients satisfaction, additional use of antiemetic drugs, motion and rest VAS scores 1 hour and 12, 72 hours after surgery, and the incidence of moderate-severe pain (VAS≥4) at each time point (P>0.05). The motion and rest VAS scores 24, 48 hours after surgery in JFX group were lower than those in JM group, the analgesia times and the incidence of nausea and vomiting in JFX group were lower than those in JM group, and the differences were statistically significant (P<0.05). Conclusion Efficiency of subacromial bursa infiltration of ropivacaine sustained analgesic is slightly better than that of patient-controlled intravenous analgesia, with lower incidence of adverse reactions.