Sang Jin Cheon

Comparison of preoperative templating with postoperative assessment in cementless total hip arthroplasty.

We studied how preoperative templating corresponded to the postoperative leg length in total hip arthroplasty.On average, the preoperative predictive value of the desired corrective change in leg length was +4.9 (+4.0–+6.7) mm, while the true postoperative assessed value of the corrective change in leg length was +4.7 (+4.0–+6.3) mm. On preoperative radiographs, the ratio of the horizontal offset of a pathological side to a normal side was 95%, on average, and it increased to 96%, on average, after an operation. Preoperatively planned sizes of the acetabular cup and the femoral stem by templating showed a high rate of coincidence with the sizes used intraoperatively.In conclusion, an accurate and careful preoperative templating can result in a balanced hip reconstruction by correcting the leg length differences and restoring the offsets.

The proximally-based sural artery flap for coverage of soft tissue defects around the knee and on the proximal third and middle third of the lower leg: 10 patients followed for 1-2.5 years.

Background and purpose There have been few reports regarding the proximally based sural artery flap, which is useful for reconstruction of soft tissue defects around the knee and on the proximal third and middle third of the lower leg. Here we report our experience with 10 patients. Patients The defects in our 10 cases were around the knee (4), on the proximal third of the lower leg (4), and on the middle third (2). 8 patients had fasciocutaneous flaps and 2 had adipofascial flaps. The flap size ranged from 4 to 10 cm in length, and from 5 to 8 cm in width. The pedicle length ranged from 12 to 20 cm. Results All 10 flaps survived. Congestion and tip necrosis occurred in 1 case with a fasciocutaneous flap, which healed without complications. A superficial infection occurred in 1 case with a fasciocutaneous flap, which healed with antibiotic treatment. Necrosis of grafted skin occurred in 2 cases of adipofascial flap; only one of them, however, required additional surgery. No morbidity of the donor site and no functional deficits were detected in any of the 10 cases. Interpretation The proximally based sural artery flap is useful for reconstruction of soft tissue defects around the knee joint and on the proximal third and middle third of the lower leg. It is a relatively easy and reliable procedure.

Modified anterograde pedicle advancement flap in fingertip injury.

Soft tissue reconstruction is needed to maintain the maximum length of the fingers in fingertip injury. The purpose of this study was to present an anterograde pedicle advancement flap technique, for the treatment of fingertip injuries, which involved a modification to the anterograde advancement flap by the dissection of the digital nerve and artery with a pedicle to advance the flap. This technique was used in 12 fingers in patients who had undergone soft tissue reconstruction of fingertip injuries between January 2012 and October 2013. The sizes of the flaps ranged from 8 × 7 mm to 14 × 10 mm. The mean length of advancement was 9.7 mm (range 7–13). The mean value of the static two-point discrimination test of the healed flaps was 5.1 mm (range 4–6) and the flaps survived in all the 12 cases. The modified anterograde pedicle advancement flap provides a reliable coverage of sensate soft tissue without bone shortening in fingertip injuries. Level II

Treatment of bony mallet finger using a modified pull-out wire suture technique

Giannikas D, Karabasi A, Dimakopoulos P. Trigger wrist. J Hand Surg Eur. 2007, 32: 214–16. Lemon RA, Engber WD. Trigger wrist: A case report. J Hand Surg Am. 1985, 10: 61–3. Suematsu N, Hirayama T, Takemitsu Y. Trigger wrist and flexor tenosynovitis. J Hand Surg Br. 1985, 10: 121–3. Takase K, Sato Y. Snapping wrist caused by synovial giant cell tumour and anomalous lumbrical muscle: A case report. J Hand Surg Eur. 2010, 35: 320–1.

Effects of growth factors and kinase inhibitors on the properties of human adipose-stromal cells in different culture conditions

The best‐fit environments for the proliferation and differentiation of human adipose tissue‐derived stromal cells (hADSCs) may require specific media and stimuli. The characteristics of hADSCs cultured in different media might be different. We evaluated the effects of growth factors on the proliferation and differentiation of hADSCs and compared the effects of these growth factors on hADSCs cultured in different serum‐contained media. The effects of kinase inhibitors on the proliferation of hADSCs were also examined.

Clinical application of a free radial artery superficial palmar branch flap for soft-tissue reconstruction of digital injuries.

Unsuccessful reconstruction of injured fingers can lead to poor outcomes. The aim of this article was to investigate the clinical application of the radial artery superficial palmar branch flap for soft-tissue reconstruction of the finger. We treated 125 patients with various finger injuries who underwent free radial artery superficial palmar branch flap reconstruction between October 2010 and March 2015. There were 46 distal finger injuries, 25 distal finger amputation following failed replantation and 54 palmar digital injuries with tendon, bone or joint exposure requiring soft-tissue reconstruction. Of the 125 cases, 114 flap reconstructions were considered successful. We believe that a free radial artery superficial palmar branch flap transfer is credible and useful for reconstructing various finger injuries. Level of Evidence: III