• Clinics in Shoulder and Elbow
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• 제19권4호
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• pp.237-240
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• 2016

Retear patterns after arthroscopic rotator cuff repair are classified into two patterns according to retear location. Type 1 is when the retear pattern occurs directly on the tendon at the bone repair site using the suture anchor repair method. Type 2 is when the retear pattern occurs at the musculocutaneous junction with a healed footprint in patients who undergo the suture bridge method. Here, the authors report another retear pattern, which was identified as a type 2 retear on magnetic resonance imaging in patients who had undergone arthroscopic rotator cuff repair by the suture-bridge technique. This pattern was different from the type 2 retear and occurred at the portion of the cuff away from the healed rotator cuff under the view of the arthroscope.

• 대한정형외과학회지
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• 제54권2호
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• pp.91-99
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• 2019

대부분의 환자는 관절경적 회전근 개 봉합술 후 통증이 완화되고 기능적 호전을 보이지만 일부 환자는 수술 후에도 증상이 지속된다. 재파열은 생물학적, 기술적, 외상적 요인이 복합적으로 작용하여 발생한다. 회전근 개 봉합술 후 재파열이 지속되는 통증의 원인일 수도 원인이 아닐 수도 있다. 따라서 이런 환자들의 평가 및 치료는 난해하여 철저한 문진, 이학적 검사, 적절한 영상 검사를 통해서 통증의 원인에 대한 분석이 이루어져야 한다. 재봉합술의 시행 여부는 환자의 나이, 기능적 요구도 회전근 개의 상태, 수술 전 관절 운동 범위, 삼각근의 상태, 관절과 상완 관절의 관절염의 유무에 따라 결정되어야 한다. 성공적인 재봉합술은 술기뿐만 아니라 수술 전 환자 교육 또한 중요하다.

• Clinics in Shoulder and Elbow
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• 제22권3호
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• pp.159-170
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• 2019

Delaminated rotator cuff tear pertains to the horizontal split of the tendon substance. As reported previously, the presence of a delaminated tear and incidence of delaminated rotator cuff tear ranges from 38% to 92%. The different strain intensities applied across the rotator cuff tendon, and the shear stress between the bursal and articular layers seem to play a role in its pathogenesis. In a delaminated rotator cuff tear, the degree and direction of retraction between two layers differ, with accompanying intrasubstance cleavage. A surgeon therefore needs to consider and carefully evaluate the tear characteristics when repairing delaminated rotator cuff tear. Delaminated rotator cuff tear is considered to be a poor prognostic factor after rotator cuff repair, but numerous surgical repair techniques have been introduced and applied to resolve this problem. Recent literature has reported good clinical outcomes after delaminated rotator cuff repair.

• Clinics in Shoulder and Elbow
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• 제22권4호
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• pp.183-189
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• 2019

Background: Since the establishment of biological augmentation to improve the treatment of rotator cuff tears, it is imperative to explore newer techniques to reduce the retear rate and improve long-term shoulder function after rotator cuff repair. This study was undertaken to determine the consequences of a gel-type atelocollagen injection during arthroscopic rotator cuff repair on clinical outcomes, and evaluate its effect on structural integrity. Methods: Between January 2014 and June 2015, 121 patients with full thickness rotator cuff tears underwent arthroscopic rotator cuff repair. Of these, 61 patients were subjected to arthroscopic rotator cuff repair in combination with an atelocollagen injection (group I), and 60 patients underwent arthroscopic rotator cuff repair alone (group II). The visual analogue scale (VAS) for pain and the Korean Shoulder Society (KSS) scores were evaluated preoperatively and postoperatively. Magnetic resonance imaging (MRI) was performed at 6 months postoperatively, to assess the integrity of the repair. Results: VAS scores were significantly lower in group I than in group II at 3, 7, and 14 days after surgery. KSS scores showed no significant difference between groups in the 24 months period of follow-up. No significant difference was obtained in the healing rate of the rotator cuff tear at 6 months postoperatively (p=0.529). Conclusions: Although a gel-type atelocollagen injection results in reduced pain in patients at 2 weeks after surgery, our study does not substantiate the administration of atelocollagen during rotator cuff repair to improve the clinical outcomes and healing of the rotator cuff.

• Clinics in Shoulder and Elbow
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• 제19권1호
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• pp.51-58
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• 2016

The arthroscopic rotator cuff repair is now considered a mainstream technique with highly satisfactory clinical results. However, concerns remain regarding healing failures for large and massive tears and high revision rate. In recent decades, various repair strategies and construct configurations have been developed for rotator cuff repair with the understanding that many factors contribute to the structural integrity of the repaired construct. The focus of biomechanical test in arthroscopic repair has been on increasing fixation strength and restoration of the footprint contact characteristics to provide early rehabilitation and improve healing. These include repaired rotator cuff tendon-footprint motion, increased tendon-footprint contact area and pressure, and tissue quality of tendon and bone. Recent studies have shown that a transosseous tunnel technique provides improved contact area and pressure between rotator cuff tendon and insertion footprint, and the technique of using double rows of suture anchors to recreate the native footprint attachment has been recently described. The transosseous equivalent suture bridge technique has the highest contact pressure and fixation force. In this review, the biomechanical tests about repair techniques of rotator cuff tear will be reviewed and discussed.

• 대한관절경학회지
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• 제16권1호
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• pp.98-103
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• 2012

회전근 개 파열의 봉합술은 최근 들어 괄목할만한 발전을 보여주고 있다. 회전근 개 파열의 자연사를 관찰하면 대부분의 경우에서 시간이 지남에 따라 크기가 증가하는 양상이 관찰되었다. 회전근 개 파열의 후기에 오는 지방 침윤 및 광범위 회전근 개 파열 후 발생하는 회전근 개 파열 관절증은 회전근 개 파열의 봉합술에서 예후를 예측하거나 수술 시기를 결정하는데 중요한 요소라 할 수 있다. 회전근 개 파열시 증상 발생 후 3년 뒤에 중등도의 지방 침윤이 발생하는 것으로 관찰되어 그 이전에 회전근 개 파열의 봉합술을 시행하는 것이 추천되고 있으며, 또한 회전근 개 파열 관절증에서도 견봉상완골 간격이 감소하기 전에 봉합술을 하는 것이 권장되고 있다. 회전근 개 파열의 관절경하 봉합술은 크게 일열 봉합술 및 이열 봉합술로 나눌 수 있으며, 시간과 비용 면에서는 전자가 장점이 있으나, 생역학적이 관점에서는 후자가 더 우수하다. 이열 봉합술의 생역학적인 장점을 유지하면서 보다 적은 시간에 회전근 개의 봉합을 가능하게 한 교량형 봉합술이 개발되어 최근 널리 사용되고 있으며, 교량형 봉합술 내에서도 파열의 특성에 따라 몇 가지 다른 술식이 개발되어 사용되고 있다.

• Clinics in Shoulder and Elbow
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• 제17권1호
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• pp.44-47
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• 2014

Typically, massive rotator cuff tears have stiff and retracted tendon with poor muscle quality, in such cases orthopaedic surgeons are confronted with big challenging to restore the cuff to its native footprint. Furthermore, even with some restoration of the footprint, it is related with a high re-tear rate due to less tension free repair and less tendon coverage. In this tough circumstance, the partial repair has yielded satisfactory outcomes at relatively short follow-up by re-creating the transverse force couple of the rotator cuff. Through this partial repair, the massive rotator cuff tear can be converted to the "functional rotator cuff tear" and provide improvement in pain and functional outcomes in patient's shoulder.

• Clinics in Shoulder and Elbow
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• 제17권3호
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• pp.145-150
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• 2014

In the patients of retracted massive rotator cuff tears, there are much of difficulty to functional recovery and pain relief. Nevertheless the development of treatment, there are still debates of the best treatments in the massive rotator cuff tears. Recenlty various of treatments are introduced; these are acromioplasty with debridement, biceps tenotomy, great tuberoplasty with biceps tenotomy, partial repair, mini-open rotator cuff repair, arthroscopic rotator cuff repair, soft tissue augmentation, tendon transfer, flap, hemiarthroplasty, and reverse total shoulder arthroplasty. That there is no difference of result for reverse total shoulder arthroplasty between patients who have massive rotator cuff tear without arthritis and patients who have cuff tear arthropathy. Reverse total shoulder arthroplasty is one of reliable and successful treatment options for massive rotator cuff tear. Especially it is more effective for patients who have a pseudoparalysis.

• Clinics in Shoulder and Elbow
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• 제5권1호
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• pp.55-62
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• 2002

Purpose : To compare and analyze the results of arthroscopic subacromial decompression and rotator cuff repair between partial rotator cuff tear and complete rotator cuff tear. Material and Methods : The authors studied 42 patients of rotator cuff tear with operation and followed over one year at Dankook university hospital from September, 1998 to March, 2001 The patient average age is 53 years and follow up period is 23 months (12-42mon1hs). We obtained 22 cases in the partial rotator cuff tear group and 20 cases in the complete rotator cuff tear group. In all cases, we used ASES methods to evaluated pain scale and function. Result : In the last follow up patients, the pain scale is decreased from 7.2 to 0.9 (ASES method : 34 to 91) in the partial rotator cuff tear group and from 7.6 to 1.2 (ASES method . 29 to 88) in the complete rotator cuff tear group, but there was no evidence of statistical difference between two groups (P>0.05). The range of motion after operation were increased in two groups. Excellent to good results were obtained 93％ and 95％ patients had pain relief and satisfied function. Conclusion : Arthroscopic subacromial decompression and arthroscopic rotator cuff repair showed good results for both of (ult-thickness and partial thickness rotator cuff tear patients in pain relief and improving the function.

• 대한물리의학회지
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• 제15권1호
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• pp.55-63
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• 2020

PURPOSE: This study examined the effects of handgrip exercise, which was started two weeks after surgery for shoulder rotator cuff repair, on the extent of muscle activation around the shoulder and the cross-sectional area of the supraspinatus muscle. METHODS: Among patients diagnosed with rotator cuff rupture by an orthopedic surgeon and rotator cuff repair was performed using an arthroscope, 28 were selected as subjects. These subjects were allocated randomly to the experimental group and control group with 14 subjects in each group. An electromyogram was measured as a measure of the extent of muscle activation around the shoulder for a total of six times (%RVC). The cross-sectional area of the supraspinatus muscle was measured before and after the rotator cuff repair by magnetic resonance imaging. RESULTS: The extent of muscle activation in accordance with time in both the experimental group and control group displayed significant differences in various muscles including the anterior deltoid, pectoralis major, upper trapezius and infraspinatus muscle(p<.05). A significant difference in the variation of the cross-sectional area of the supraspinatus muscle was observed between the experimental group and the control group(p<.05). CONCLUSION: Handgrip exercise helps rehabilitate the shoulder joint at the acute stage after rotator cuff repair when assertive exercise therapy cannot be applied.