ABSTRACT
Anterior cruciate ligament (ACL) tears are among the most common injuries to the knee. With recent improvements in imaging that allow for more precise identification of ACL tear patterns, improved techniques for repair, and advancements in biological augmentation, there has been a re-emerging interest in primary ACL repair, especially for acute proximal ACL tears. This article aims to describe a surgical technique for primary ACL repair using a re-tensionable all-suture-based construct.
ABSTRACT
Incomplete healing and/or functional failure following rotator cuff tear repair remains a challenging problem for both patients and surgeons. Augmentation strategies are growing to increase healing through biologic and mechanical mechanisms to improve functional results after arthroscopic rotator cuff repair. The majority of currently described augmentation techniques use allograft tissue. An alternative, low-cost, autograft option for augmentation is the use of the long head of biceps tendon autograft as a free functional graft. Here, we describe the use of autograft biceps tendon as a viable option for augmentation of double-row rotator cuff repair with knotless all-suture suture anchors.
ABSTRACT
Isolated posterior instability is well described but relatively uncommon, accounting for less than 10% of all shoulder instability cases. When nonoperative management fails, surgical outcomes demonstrate improved patient-reported outcomes with a high level of return to sport. Knotless suture anchor and "all-suture" suture anchor technology are now available and used for instability procedures in the shoulder. This technical description describes knotless "all-suture" suture anchor fixation for isolated posterior labral tears.
ABSTRACT
Osteochondral and pure chondral lesions of the knee are common after patellar dislocations. There are multiple described techniques for the fixation of these lesions, including metallic screws, bioabsorbable screws, bioabsorbable implants, and suture devices. The purpose of this article is to describe a surgical technique for surgical fixation of a lateral condyle chondral lesion using knotless all-suture anchors, with second-look knee arthroscopy illustrating healing of the cartilage repair.
ABSTRACT
CASE: We present a case of a 48-year-old man with a subacute tear of his left rectus femoris, repaired using Achilles tendon allograft. After fixation distally to the patella using suture anchors and a Krackow suture technique, the allograft was fixed proximally to the remnant rectus femoris tendon with multiple sutures in a variety of stitch configurations. The patient recovered excellently, regaining near-normal flexion and an intact straight leg raise without an extensor lag. CONCLUSION: The literature regarding repair of subacute and chronic rectus femoris ruptures is limited. We provide an additional option for operative repair of subacute and chronic ruptures using Achilles tendon allograft.
Subject(s)
Achilles Tendon , Quadriceps Muscle , Male , Humans , Middle Aged , Quadriceps Muscle/surgery , Achilles Tendon/surgery , Knee Joint/surgery , Rupture/surgery , AllograftsABSTRACT
Diagnostic needle arthroscopy performed in office is a safe and cost-effective method for accurate evaluation of intra-articular pathology, improving clinical decision making. This minimally invasive approach is an effective alternative to traditional diagnostic techniques of diagnostic surgical arthroscopy and magnetic resonance imaging (MRI). Needle arthroscopy is considered low-risk, with an extremely low complication rate when performed with appropriate technique and indications. The purpose of this article is to describe an approach to an in-office diagnostic procedure using a needle arthroscopy system.
ABSTRACT
Rotator cuff tears remain a common injury, and may require rotator cuff repair, one of the most frequently performed orthopaedic procedures. Achieving an ideal construct during rotator cuff repair is crucial, and while many techniques exist to accomplish this, they are continuously evolving to improve stability and biomechanics of the repaired shoulder. Improving efficiency of the procedure alongside the increasing complexity of innovative techniques remains of the utmost importance. The double-pulley SpeedBridge technique achieves medial fixation in a double-row, transosseus-equivalent repair, and the knotless nature of the technique creates for a low-profile construct and improves overall efficiency. The purpose of this Technical Note is to describe a reproducible and efficient approach to arthroscopic rotator cuff repair using the SpeedBridge knotless double-pulley technique.
ABSTRACT
Revision quadriceps tendon repair presents a challenging problem for the treating surgeon because of associated anatomic defects such as large tendon-gap deficits and preexistent poor tissue quality. Current methods for revision quadriceps tendon repair use tendon autograft, which may predispose to additional morbidity because the repair relies only on soft tissue fixation. In this Technical Note, we describe a technique for revision of a failed quadriceps tendon repair with a large tendon gap using a trapezoidal plug Achilles tendon allograft. This technique constitutes a safe and effective approach to revising failed primary quadriceps tendon repairs, is suitable for large-gap defects, and has the ability to withstand large force transmissions.
ABSTRACT
With aging and disease, there is a breakdown of the natural fractal-like organization of heart rate (HR). Fractal-like correlation properties of HR can be assessed with detrended fluctuation analysis (DFA). A short-time scaling exponent (alpha(s)) value of 1 is associated with healthy HR dynamics, whereas values that deviate away from 1, in either direction, indicate fractal collapse. The purpose of this study was to examine the effect of resistance exercise training (RT) on fractal correlation properties of HR dynamics. Resting ECG was collected at baseline, following a 4-wk time control period and 6 wk of RT (3 days per wk) in 34 men (23 +/- 1 years of age). Fractal properties of HR were assessed with DFA. There was no change in alpha(s) following either the time control period or RT (1.01 +/- 0.06 to 0.98 +/- 0.06 to 0.93 +/- 0.04, P > 0.05). Given the potential bidirectional nature of fractal collapse, subjects were retrospectively separated into two groups (higher alpha(s) and lower alpha(s)) on the basis of the initial alpha(s) by using cluster analysis. An interaction was detected for alpha(s) following RT (P < 0.05). There was no change in alpha(s) in either group following the time control, but alpha(s) increased following RT in the lower alpha(s) group (n = 18; 0.73 +/- 0.04 to 0.69 +/- 0.04 to 0.88 +/- 0.04) and alpha(s) decreased following RT in the higher alpha(s) group (n = 16; 1.20 +/- 0.04 to 1.24 +/- 0.04 to 0.98 +/- 0.04). In conclusion, RT improves fractal properties of HR dynamics.
Subject(s)
Heart Rate/physiology , Physical Fitness/physiology , Weight Lifting/physiology , Adolescent , Adult , Anaerobic Threshold/physiology , Blood Chemical Analysis , Blood Pressure/physiology , Body Composition/physiology , Body Height/physiology , Body Weight/physiology , Brachial Artery/physiology , Electrocardiography , Fractals , Humans , Male , Muscle Strength/physiologyABSTRACT
The purpose of this study was to examine heart rate recovery (HRR) and linear/nonlinear heart rate variability (HRV) before and after resistance training. Fourteen young men (25.0 +/- 1.1 yr of age) completed a crossover design consisting of a 4-wk time-control period, 6 wk of resistance training (3 days/wk), and 4 wk of detraining. Linear HRV was spectrally decomposed using an autoregressive approach. Nonlinear dynamics of heart rate complexity included sample entropy (SampEn) and Lempel-Ziv entropy (LZEn). HRR was calculated from a graded maximal exercise test as maximal heart rate attained during the test minus heart rate at 1 min after exercise (HRR). There was no change in SampEn, LZEn, or HRR after the time-control portion of the study (P > 0.05). SampEn (P < 0.05), LZEn (P < 0.05), and HRR (P < 0.05) increased after resistance training and returned to pretraining values after detraining. There was no change in spectral measures of HRV at any time point (P > 0.05). These findings suggest that resistance exercise training increases heart rate complexity and HRR after exercise but has no effect on spectral measures of HRV in young healthy men. These autonomic changes regress shortly after cessation of training.
